ISM - Revision history

https://hfunderground.com/wiki/index.php?action=history&feed=atom&title=ISM ISM - Revision history 2026-10-21T18:32:40Z Revision history for this page on the wiki MediaWiki 1.16.5 https://hfunderground.com/wiki/index.php?title=ISM&diff=18333&oldid=prev R4002 at 14:56, 4 March 2026 2026-03-04T14:56:50Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 14:56, 4 March 2026</td> </tr><tr><td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Industrial, Scientific and Medical uses of RF.  In other words, non-communication services.  In the USA, ISM bands are regulated under Part 18 of the [[FCC]] rules.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Industrial, Scientific and Medical uses of RF.  In other words, non-communication services.  In the USA, ISM bands are regulated under Part 18 of the [[FCC]] rules.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>In recent years, the ISM bands have become extremely popular for short-range communications systems, including things like WiFi, some cordless phones, Bluetooth and dozens of other services.  Some of the ISM bands overlap with [[Part 15]] bands.  This can lead to significant confusion.  Remember that Part 15 low power systems are designed and regulated as radio communications systems - "intentional radiators" as the FCC calls them.  Devices operating on the ISM bands must accept any interference from ISM operations (as long as the ISM system is operating within the technical standards of the country the equipment is operating in.   </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>In recent years, the ISM bands have become extremely popular for short-range communications systems, including things like WiFi, some <ins class="diffchange diffchange-inline">[[Cordless_telephone|</ins>cordless phones<ins class="diffchange diffchange-inline">]]</ins>, Bluetooth and dozens of other services.  Some of the ISM bands overlap with [[Part 15]] bands.  This can lead to significant confusion.  Remember that Part 15 low power systems are designed and regulated as radio communications systems - "intentional radiators" as the FCC calls them.  Devices operating on the ISM bands must accept any interference from ISM operations (as long as the ISM system is operating within the technical standards of the country the equipment is operating in.   </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Good examples of this include the Part 95 [[CB]] radio service, the Part 95 [[Remote_Control|Remote Control Radio Service]], the 26.960 MHz - 27.280 MHz Part 15 service and the 26.957 MHz - 27.283 MHz - 27.12 MHz center frequency - all operating in the same spectrum.   </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Good examples of this include the Part 95 [[CB]] radio service, the Part 95 [[Remote_Control|Remote Control Radio Service]], the 26.960 MHz - 27.280 MHz Part 15 service <ins class="diffchange diffchange-inline">band [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|27MHz band]] </ins>and the 26.957 MHz - 27.283 MHz - 27.12 MHz center frequency - all operating in the same spectrum.   </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Other examples include the 2.4 GHz band, used by [[Wi-Fi]], Bluetooth, analog and digital video and audio links, baby monitors, intercoms, [[Cordless_telephone|cordless phones]] (although most cordless phones have moved to the [[DECT]] system, as well as ISM devices such as microwave ovens on 2.45 GHz / 2450 MHz.  The 902-928 MHz band suffers from similar interference issues.   </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Other examples include the 2.4 GHz band, used by [[Wi-Fi]], Bluetooth, analog and digital video and audio links, baby monitors, intercoms, [[Cordless_telephone|cordless phones]] (although most cordless phones have moved to the [[DECT]] system, as well as ISM devices such as microwave ovens on 2.45 GHz / 2450 MHz.  The 902-928 MHz band suffers from similar interference issues.   </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=18332&oldid=prev R4002 at 14:55, 4 March 2026 2026-03-04T14:55:00Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 14:55, 4 March 2026</td> </tr><tr><td colspan="2" class="diff-lineno">Line 14:</td> <td colspan="2" class="diff-lineno">Line 14:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|Part 15]] and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|Part 15]] and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - [[SINCGARS|shared]] with Part 15]] band, [[Remote_Control#40_MHz_RC_Frequencies|model]] [[Remote_Control#European_Standardization_EU_or_CEPT|control]], 8 meter [[Amateur_radio|ham band]] in some countries</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - [[SINCGARS|shared]] with <ins class="diffchange diffchange-inline">[[</ins>Part 15]] band, [[Remote_Control#40_MHz_RC_Frequencies|model]] [[Remote_Control#European_Standardization_EU_or_CEPT|control]], 8 meter [[Amateur_radio|ham band]] in some countries</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=18331&oldid=prev R4002 at 14:54, 4 March 2026 2026-03-04T14:54:33Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 14:54, 4 March 2026</td> </tr><tr><td colspan="2" class="diff-lineno">Line 14:</td> <td colspan="2" class="diff-lineno">Line 14:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|Part 15]] and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|Part 15]] and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - [[SINCGARS|shared]] with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - [[SINCGARS|shared]] with Part 15<ins class="diffchange diffchange-inline">]] </ins>band<ins class="diffchange diffchange-inline">, [[Remote_Control#40_MHz_RC_Frequencies|model]] [[Remote_Control#European_Standardization_EU_or_CEPT|control]]</ins>, 8 meter [[Amateur_radio|ham band]] in some countries</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=16667&oldid=prev R4002 at 14:27, 23 October 2024 2024-10-23T14:27:53Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 14:27, 23 October 2024</td> </tr><tr><td colspan="2" class="diff-lineno">Line 14:</td> <td colspan="2" class="diff-lineno">Line 14:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|Part 15]] and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with [[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|Part 15]] and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - <ins class="diffchange diffchange-inline">[[SINCGARS|</ins>shared<ins class="diffchange diffchange-inline">]] </ins>with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=15511&oldid=prev R4002 at 15:19, 30 October 2023 2023-10-30T15:19:05Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 15:19, 30 October 2023</td> </tr><tr><td colspan="2" class="diff-lineno">Line 13:</td> <td colspan="2" class="diff-lineno">Line 13:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*6.765 MHz - 6.795 MHz - center ISM frequency 6.78 MHz 6780 kHz  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*6.765 MHz - 6.795 MHz - center ISM frequency 6.78 MHz 6780 kHz  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with <ins class="diffchange diffchange-inline">[[Part_15#15.227_Operation_within_the_band_26.96-27.28_MHz.|</ins>Part 15<ins class="diffchange diffchange-inline">]] </ins>and Part 95 ([[CB]] [[CB#India_27_channel_27MHz_CB|radio]]), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=15510&oldid=prev R4002 at 15:18, 30 October 2023 2023-10-30T15:18:22Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 15:18, 30 October 2023</td> </tr><tr><td colspan="2" class="diff-lineno">Line 13:</td> <td colspan="2" class="diff-lineno">Line 13:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*6.765 MHz - 6.795 MHz - center ISM frequency 6.78 MHz 6780 kHz  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*6.765 MHz - 6.795 MHz - center ISM frequency 6.78 MHz 6780 kHz  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] <ins class="diffchange diffchange-inline">[[CB#India_27_channel_27MHz_CB|</ins>radio<ins class="diffchange diffchange-inline">]]</ins>), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band, 8 meter [[Amateur_radio|ham band]] in some countries</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=13964&oldid=prev R4002 at 15:12, 14 June 2022 2022-06-14T15:12:00Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 15:12, 14 June 2022</td> </tr><tr><td colspan="2" class="diff-lineno">Line 14:</td> <td colspan="2" class="diff-lineno">Line 14:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band  </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz - shared with Part 15 band<ins class="diffchange diffchange-inline">, 8 meter [[Amateur_radio|ham band]] in some countries</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=13515&oldid=prev R4002 at 23:35, 29 September 2021 2021-09-29T23:35:17Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 23:35, 29 September 2021</td> </tr><tr><td colspan="2" class="diff-lineno">Line 5:</td> <td colspan="2" class="diff-lineno">Line 5:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Good examples of this include the Part 95 [[CB]] radio service, the Part 95 [[Remote_Control|Remote Control Radio Service]], the 26.960 MHz - 27.280 MHz Part 15 service and the 26.957 MHz - 27.283 MHz - 27.12 MHz center frequency - all operating in the same spectrum.   </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Good examples of this include the Part 95 [[CB]] radio service, the Part 95 [[Remote_Control|Remote Control Radio Service]], the 26.960 MHz - 27.280 MHz Part 15 service and the 26.957 MHz - 27.283 MHz - 27.12 MHz center frequency - all operating in the same spectrum.   </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Other examples include the 2.4 GHz band, used by [[Wi-Fi]], Bluetooth, analog and digital video and audio links, baby monitors, intercoms, [[Cordless_telephone|cordless phones]](although most cordless phones have moved to the [[DECT]] system, as well as ISM devices such as microwave ovens on 2.45 GHz / 2450 MHz.  The 902-928 MHz band suffers from similar interference issues.   </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Other examples include the 2.4 GHz band, used by [[Wi-Fi]], Bluetooth, analog and digital video and audio links, baby monitors, intercoms, [[Cordless_telephone|cordless phones]] (although most cordless phones have moved to the [[DECT]] system, as well as ISM devices such as microwave ovens on 2.45 GHz / 2450 MHz.  The 902-928 MHz band suffers from similar interference issues.   </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>See 47 CFR 18 - Subpart C.  47 CFR § 18.301 Operating frequencies.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>See 47 CFR 18 - Subpart C.  47 CFR § 18.301 Operating frequencies.</div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=13514&oldid=prev R4002 at 23:32, 29 September 2021 2021-09-29T23:32:53Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 23:32, 29 September 2021</td> </tr><tr><td colspan="2" class="diff-lineno">Line 14:</td> <td colspan="2" class="diff-lineno">Line 14:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies|RC]], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz  </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz <ins class="diffchange diffchange-inline">- shared with Part 15 band </ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*2400 MHz - 2500 MHz - center ISM frequency 2450 MHz 2.45 GHz - very crowded 2.4 GHz band  </div></td></tr> </table>

R4002 https://hfunderground.com/wiki/index.php?title=ISM&diff=13513&oldid=prev R4002 at 23:31, 29 September 2021 2021-09-29T23:31:19Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 23:31, 29 September 2021</td> </tr><tr><td colspan="2" class="diff-lineno">Line 13:</td> <td colspan="2" class="diff-lineno">Line 13:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*6.765 MHz - 6.795 MHz - center ISM frequency 6.78 MHz 6780 kHz  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*6.765 MHz - 6.795 MHz - center ISM frequency 6.78 MHz 6780 kHz  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*13.553 MHz - 13567 MHz - center ISM frequency 13.56 MHz 13560 kHz - [[Part_15_Beacons#13560_kHz_Part_15_Beacons|22 meter]] band, also Part 15 allocation</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control|RC], and [[HF_pagers|data links/telemetry/paging]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*26.957 MHz - 27.283 MHz - center ISM frequency 27.12 MHz 27120 kHz - [[11 meter]] band, shared with Part 15 and Part 95 ([[CB]] radio), [[Remote_Control<ins class="diffchange diffchange-inline">#26.2F27_MHz_27MHz_26-28_MHz_RC_Frequencies</ins>|RC<ins class="diffchange diffchange-inline">]</ins>], and [[HF_pagers|data links/telemetry/paging]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*40.660 MHz - 40.700 MHz - center ISM frequency 40.68 MHz  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*902 MHz - 928 MHz - center ISM frequency 915.0 MHz - 33cm ham band  </div></td></tr> </table>

R4002