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<image:title><![CDATA[high frequency and low frequency effects on ions]]></image:title>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/67/Diamond-X50.avif</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/digital-signal-processing.html</loc>
<lastmod>2026-04-25T13:01:44-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/DSP-high-level-processing-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/Analog-wave-2.jpg</image:loc>
<image:title><![CDATA[analog waveform]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/O-scope-1-2.jpg</image:loc>
<image:title><![CDATA[Oscilloscope analog wave display]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/O-scope-2-sampling-2.png</image:loc>
<image:title><![CDATA[O-scope sampling points]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/O-scope-3-wave-regen.jpg</image:loc>
<image:title><![CDATA[Digital waveform reproduction stair-stepped]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/DSP-high-level-processing.jpg</image:loc>
<image:title><![CDATA[A-D Processing]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/DSP-block-diagram-1.jpg</image:loc>
<image:title><![CDATA[DSP in receiving processing stream]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/Fourier-Transform.jpg</image:loc>
<image:title><![CDATA[Fourier Transform illustration]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/Filter-Width.jpg</image:loc>
<image:title><![CDATA[Filter width example]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/102/Filter-Width-2.jpg</image:loc>
<image:title><![CDATA[Notch filter width example]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/dipole-impedance-g9b08.html</loc>
<lastmod>2026-05-05T14:35:08-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/68/water-tank-analogy-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/68/dipole-config.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/68/AC-cycles.avif</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/68/water-tank-analogy.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/direct-digital-conversion-e7f01.html</loc>
<lastmod>2026-05-05T14:47:17-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/65/direct-digital-conversion-rec-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/65/o-scope-1.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/65/heterodyne-rec.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/65/direct-digital-conversion-rec.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/dissecting-your-technician-exam.html</loc>
<lastmod>2026-05-06T07:08:29-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/17/phone-app-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/17/phone-app.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/17/ID-components.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/17/table-1.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/17/table-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/dx-techniques-e3a06.html</loc>
<lastmod>2026-05-05T14:51:23-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/63/diurnal-map-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/63/Ionosphere.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/63/diurnal-map.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/electrical-shock-protection.html</loc>
<lastmod>2026-05-06T07:17:03-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/15/tongue-shock-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/15/3-wire-plug.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/15/outlet-GFCI.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/15/tongue-shock.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/five-common-mistakes-new-hams-make.html</loc>
<lastmod>2026-05-06T07:28:16-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/12/3-HT-comparison-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/12/programming-ht.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/12/3-HT-comparison.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/12/HT-on-shelf.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/fm-bandwidth.html</loc>
<lastmod>2026-04-27T15:33:45-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/84/mic-scream-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/84/FM-devkiation-graphic.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/84/FM-modulation.jpg</image:loc>
<image:title><![CDATA[FM modulation by a baseband signal]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/84/mic-scream.jpg</image:loc>
<image:title><![CDATA[kid screaming into microphone]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/fm-repeaters-an-introduction.html</loc>
<lastmod>2026-05-05T16:18:02-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/43/repeater-block-diagram-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/43/elroy-repeater.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/43/elroy-repeater-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/43/repeater-block-diagram.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/43/2m-cavity-filters.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/get-a-vanity-call-sign.html</loc>
<lastmod>2026-05-06T09:11:06-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/34/vanity-calls.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/get-the-right-signal-tone.html</loc>
<lastmod>2026-05-05T17:34:52-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/elroy-tones-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/table-1.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/elroy-tones.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/microphone.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/ctcss-frequencies.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/bits-table.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/22/DCS-table.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/going-mobile-install-a-station-in-your-vehicle-part-1-continued.html</loc>
<lastmod>2026-05-05T17:16:20-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/truck-in-garage-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/antenna-bracket.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/antenna-bracket-mounting.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/coax-loss-chart.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/routing-cable.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/grommet.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/routing-cable-behind-seat.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/tuner-under-seat.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/truck-in-garage.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/truck-antennas.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/swr-curves-1.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/swr-curves-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/swr-curves-3.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/27/swr-curve-4.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/good-swr-antenna-resonance.html</loc>
<lastmod>2026-04-27T14:46:32-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/94/SWR-curve-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/94/SWR-curve.png</image:loc>
<image:title><![CDATA[SWR curve]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/94/dummy-load.png</image:loc>
<image:title><![CDATA[example dummy loads]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/94/dipole.jpg</image:loc>
<image:title><![CDATA[half-wave dipole configuration]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ham-radio-mobile-installation-going-mobile-part-1.html</loc>
<lastmod>2026-05-05T17:22:42-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/system-diagram-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/system-diagram.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/cab-photos.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/under-seat-chassis.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/power-pole-connection.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/battery-connection.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/VHF-anenna-bracket.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/hamsticks.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/26/hamstick-whip-connection.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ham-radio-mobile-installation-going-mobile-part-2.html</loc>
<lastmod>2026-05-05T17:07:53-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/truck-diagram-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/truck-diagram.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/SNR.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/tinned-braid.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/bonding-kit.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/trunk-bonding.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/chassis-ground.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/28/balun.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ham-radio-school-visualization-apps.html</loc>
<lastmod>2026-05-06T13:28:46-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/QRM-Sim-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/AM-Sim-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/FM-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/CW-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/FSK-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/QRM-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/FFT-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/Filter-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/SWR-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/107/Ohm-Sim.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ham-speak-learning-the-lingo.html</loc>
<lastmod>2026-05-06T07:37:41-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/9/elroy-ht-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/9/elroy-ht.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/hey-which-coaxial-cable-should-i-use.html</loc>
<lastmod>2026-05-06T07:25:16-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/13/cable-dissection-comparison-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
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<image:image>
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<image:title><![CDATA[]]></image:title>
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<image:image>
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<image:title><![CDATA[]]></image:title>
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<url>
<loc>https://www.hamradioschool.com/articles/radio-contest-why.html</loc>
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<image:title><![CDATA[]]></image:title>
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<url>
<loc>https://www.hamradioschool.com/articles/receiver-signal-discrimination-t7a04.html</loc>
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<image:loc>https://www.hamradioschool.com/articles/media/posts/50/QRM-filtered.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
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<url>
<loc>https://www.hamradioschool.com/articles/repeater-offsets-in-2-meter-band-t2a01.html</loc>
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<image:title><![CDATA[]]></image:title>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/42/RepeaterBook.png</image:loc>
<image:title><![CDATA[]]></image:title>
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<url>
<loc>https://www.hamradioschool.com/articles/rf-burns-t0c07.html</loc>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/105/RF-Burn.png</image:loc>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/105/RF-Burn-2.png</image:loc>
<image:title><![CDATA[An RF burn]]></image:title>
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</url>
<url>
<loc>https://www.hamradioschool.com/articles/rf-exposure-factors-t0c04.html</loc>
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<image:loc>https://www.hamradioschool.com/articles/media/posts/54/mitigation-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/54/mitigation.png</image:loc>
<image:title><![CDATA[]]></image:title>
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<url>
<loc>https://www.hamradioschool.com/articles/rf-ground-conductors-t4a08.html</loc>
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<image:loc>https://www.hamradioschool.com/articles/media/posts/35/copper-strap-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
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<image:title><![CDATA[]]></image:title>
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</url>
<url>
<loc>https://www.hamradioschool.com/articles/rms-voltage-g5b09.html</loc>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/97/rms-voltage.png</image:loc>
<image:title><![CDATA[]]></image:title>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/97/V-diagram-1.jpg</image:loc>
<image:title><![CDATA[Voltage waveform]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/97/V-diagram-2.jpg</image:loc>
<image:title><![CDATA[voltage waveform showing RMS]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/series-parallel-component-calculations-g5c04.html</loc>
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<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/Parallel-Circuit-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/equation-1.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/equation-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/Parallel-Circuit.jpg</image:loc>
<image:title><![CDATA[parallel circuit]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/equation-3.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/equation-4.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/equation-5.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/101/series-circuit.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/simplex-duplex-offset-and-split.html</loc>
<lastmod>2026-05-05T15:09:28-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/56/simplex-duplex-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/56/simplex-duplex.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/56/split-ops.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/56/split-button.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/56/Bob-K0NR-Satellite.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/single-sideband-advantages-g2a06.html</loc>
<lastmod>2026-05-05T16:09:00-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/47/bandwidth-comparison-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/47/SSB-signal.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/47/AM-Signal.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/47/bandwidth-comparison.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/single-sideband-on-2-meters-the-other-vhf-mode.html</loc>
<lastmod>2026-05-05T16:11:25-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/46/k0nr-2m-SSB-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/46/k0nr-2m-SSB.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/46/SSB-radios.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/46/2m-SSB-antennas.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/skip-signal-fade-t3a08.html</loc>
<lastmod>2026-04-27T15:07:07-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/89/signal-combos-2-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/89/signal-combos.png</image:loc>
<image:title><![CDATA[signal arrival phase differences]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/89/signal-combos-2.png</image:loc>
<image:title><![CDATA[signal arrival phase differneces]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/spectrum-analyzer-e4a02.html</loc>
<lastmod>2026-04-27T15:30:50-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/85/Signal-Analyzer-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/85/spectrum-graphic.png</image:loc>
<image:title><![CDATA[Time and Frequency Domains 3D view]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/85/O-Scope.jpg</image:loc>
<image:title><![CDATA[waveform on oscilloscope]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/85/Signal-Analyzer.jpg</image:loc>
<image:title><![CDATA[spectrum analyzer]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/split-mode-operations-g4a03.html</loc>
<lastmod>2026-05-05T15:06:08-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/57/split-diagram-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/57/split-diagram.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ssb-receive-filter-bandwidth.html</loc>
<lastmod>2026-05-05T16:03:48-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/49/QRM-filtered-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/49/USB-signal.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/49/QRM-spectrum.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/49/QRM-filtered.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ssb-transmit-power-audio-required.html</loc>
<lastmod>2026-05-05T16:06:41-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/48/microphone-no-mic-3.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/48/modulation-types.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/48/microphone-no-mic.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/48/controls.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/standard-phonetic-alphabet-t2c03.html</loc>
<lastmod>2026-05-08T09:05:16-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/39/QSL-cans-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/39/QSL-cans.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/39/THUGX.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/39/phonetic-alphabet.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/sunspots-and-propagation.html</loc>
<lastmod>2026-04-27T15:23:40-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/86/big-sunspot-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/86/solar-arc.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/86/ionization-of-atom.jpg</image:loc>
<image:title><![CDATA[ionization of atoms by UV radiation]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/86/layers-of-ionosphere.jpg</image:loc>
<image:title><![CDATA[layers of ionosphere]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/86/big-sunspot.jpg</image:loc>
<image:title><![CDATA[large sunspot on solar disk]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/86/solar-cycle-plot.png</image:loc>
<image:title><![CDATA[solar cycle history plot]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/swr-perfect-match-t7c04.html</loc>
<lastmod>2026-04-27T14:49:40-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/93/swr-in-transmission-line-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/93/swr-in-transmission-line.jpg</image:loc>
<image:title><![CDATA[voltage waveforms in a transmission line]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/93/equation-1.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/93/equations-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/tactical-nets.html</loc>
<lastmod>2026-05-05T16:14:21-06:00</lastmod>
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<image:loc>https://www.hamradioschool.com/articles/media/posts/44/w0jak-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/44/w0jak.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/tech-general-or-extra-license-what-s-the-difference.html</loc>
<lastmod>2026-05-06T08:01:15-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/2/band-plan-chart-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/2/band-plan-chart.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/tech-over-the-horizon-propagation-t3c04.html</loc>
<lastmod>2026-04-27T15:04:43-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/90/ionospher-layers-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/90/ionospher-layers.jpg</image:loc>
<image:title><![CDATA[layers of the ionosphere]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/technician-figure-t-1.html</loc>
<lastmod>2026-04-27T13:30:35-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/100/Figure-T-1-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/100/Figure-T-1.png</image:loc>
<image:title><![CDATA[Exam Figure T-1]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/100/Figure-T-1-mod.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/ten-uses-for-a-multimeter.html</loc>
<lastmod>2026-04-25T12:42:33-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/104/Multimeter-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/104/Multimeter.jpg</image:loc>
<image:title><![CDATA[Equus 3320 auto-ranging digital multimeter]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/the-superheterodyne-receiver-frequency-mixing-and-the-intermediate-frequency.html</loc>
<lastmod>2026-05-05T15:00:40-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/59/frequency-mixing-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/59/FT-897.avif</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/59/AM-Modulation.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/59/frequency-mixing.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/59/beats.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/59/filtered-beats.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/time-frequency-domain-signal-views.html</loc>
<lastmod>2026-04-27T15:35:32-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/83/spectrum-graphic-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/83/spectrum-graphic.png</image:loc>
<image:title><![CDATA[time and frequency domains 3D view]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/83/TandF-Views-Fig-2-AM-FM.png</image:loc>
<image:title><![CDATA[Time domain views of modulating audio signals and AM and FM modulated RF carrier signals.]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/83/TandF-Fig-3-Freq-Dom-CW-USB-AM.png</image:loc>
<image:title><![CDATA[Frequency Domain View of CW, USB, and AM signals.]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/tower-grounding-t0b08.html</loc>
<lastmod>2026-05-06T08:36:48-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/37/tower-grounding-tn.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/37/antenna-lightning.avif</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/transformer-windings-diameters-g5c16.html</loc>
<lastmod>2026-04-29T17:43:32-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/78/transformer-1-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/78/transformer-1.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/transformers-g5c06.html</loc>
<lastmod>2026-04-29T17:46:35-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/77/transformer-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/77/transformer-robot.jpg</image:loc>
<image:title><![CDATA[Robot transformer]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/77/inductor.jpg</image:loc>
<image:title><![CDATA[inductor coil and magnetic field lines]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/77/transformer.jpg</image:loc>
<image:title><![CDATA[transformer windings]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/transmitting-privileges-t1e04.html</loc>
<lastmod>2026-05-05T16:20:53-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/41/w0stu-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/41/w0stu.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/trimming-a-dipole-antenna.html</loc>
<lastmod>2026-05-06T08:47:29-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/31/swr-curve-tn.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/31/inverted-V-dipole.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/31/swr-meer.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/31/analyzer.avif</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/31/insulator-on-wire.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/31/swr-curves.avif</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/types-of-radio-frequency-interference-t7b03.html</loc>
<lastmod>2026-05-05T15:22:38-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/51/ear-plugs-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/51/ear-plugs.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/understanding-single-sideband-ssb.html</loc>
<lastmod>2026-05-05T15:41:21-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/92/VFO-dialing-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/92/VFO-dialing.jpg</image:loc>
<image:title><![CDATA[a hand dialing a VFO knob on a transceiver]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/92/bandwidth-comparison.png</image:loc>
<image:title><![CDATA[comparison of bandwidth of different modes]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/92/AM-vs-SSB.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/92/ARRL-Chart.png</image:loc>
<image:title><![CDATA[ARRL Band Plan Chart]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/92/Bob-K0NR.jpg</image:loc>
<image:title><![CDATA[Bob KØNR operating SSB on 2-meter band]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/using-elmers-for-high-impact.html</loc>
<lastmod>2026-05-06T12:29:41-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/110/w0stu-elmer-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/110/w0stu-elmer.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/110/survey-results.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/vacuum-tubes-g6a10.html</loc>
<lastmod>2026-04-27T15:45:17-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/80/triode-2-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/80/triode-1.jpg</image:loc>
<image:title><![CDATA[a triode tube]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/80/triode-2.jpg</image:loc>
<image:title><![CDATA[triode tube control grid function]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/80/tetrode-1.jpg</image:loc>
<image:title><![CDATA[tetrode tube configuration]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/80/concentric-structure.avif</image:loc>
<image:title><![CDATA[concentric structure of tubes]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/variable-propagation-conditions-g3a10.html</loc>
<lastmod>2026-04-27T15:17:56-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/87/contacts-map-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/87/sunspots-2.jpg</image:loc>
<image:title><![CDATA[solar disk with sunspots]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/87/contacts-map.jpg</image:loc>
<image:title><![CDATA[world map of radio contacts]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/vhf-multi-mode-transceiver.html</loc>
<lastmod>2026-05-05T16:12:19-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/45/k0nr-2m-SSB-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/45/k0nr-2m-SSB.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-are-the-different-kinds-of-ham-radios.html</loc>
<lastmod>2026-05-06T07:58:02-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/k0nr-portable-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/4-HTs.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/mobile-station-1.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/mobile-station-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/FT-891.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/FT-991a.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/IC7300.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/4/k0nr-portable.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-frequency-do-i-use-on-2-meters.html</loc>
<lastmod>2026-05-06T07:02:44-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/18/band-plan-2m-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/18/band-plan-2m.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-frequency-do-i-use-on-70-centimeters.html</loc>
<lastmod>2026-05-06T07:01:04-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/19/band-plan-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/19/band-plan.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-is-the-amateur-radio-service.html</loc>
<lastmod>2026-05-06T08:04:01-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/1/FCC-logo-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/1/FCC-logo.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/1/spectrum-allocation-chart.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-kind-of-antenna-will-i-need.html</loc>
<lastmod>2026-05-06T08:15:43-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/6/header-antennas-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/6/header-antennas.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/6/ht-antennas.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/6/clip-mount.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/6/antenna-metric-package.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-s-so-great-about-ham-radio.html</loc>
<lastmod>2026-05-06T07:59:53-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/3/kt0liz-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/3/kt0liz.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-s-that-connector-on-my-ht.html</loc>
<lastmod>2026-05-06T07:23:02-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/14/BNC-HT-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/14/HT-radio-duck-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/14/BNC-HT.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/14/SMA-fem-HT.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/14/SMA-male-HT.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/14/SMA-BNC-adapters.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/what-should-i-get-for-my-first-radio.html</loc>
<lastmod>2026-05-06T08:13:51-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/4-HTs-2.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/4-HTs.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/2-HTs.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/ICOM-ID-52.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/UV5R.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/HT-antennas.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/5/clip-mount.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
</url>
<url>
<loc>https://www.hamradioschool.com/articles/working-dx.html</loc>
<lastmod>2026-05-05T15:19:34-06:00</lastmod>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/53/world-regions-2.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/53/cq-dx-sticker.png</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
<image:loc>https://www.hamradioschool.com/articles/media/posts/53/world-regions.jpg</image:loc>
<image:title><![CDATA[]]></image:title>
</image:image>
<image:image>
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