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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>It gets even more complicated than this. Just one example, I often visit Germany. The band plan there is extremely limited, as is the whole 2m band. The 2m band in Germany is from 144.000 to 146.000. When you reserve space for CW, SSB, APRS, Digital, beacons, and satellite, there isn’t a whole lot of room for repeaters or FM-simplex.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Vy73 - Mike - KD5KC.<o:p></o:p></p><p class=MsoNormal>El Paso, Texas - DM61rt.<o:p></o:p></p><p class=MsoNormal>SOTA W5T-Texas Association Manager.<o:p></o:p></p><p class=MsoNormal>NA-SOTA info is at: <a href="http://na-sota.org/"><span style='color:#0563C1'>http://na-sota.org/</span></a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> chirp_users-bounces@intrepid.danplanet.com <chirp_users-bounces@intrepid.danplanet.com> <b>On Behalf Of </b>Ray Hutchinson<br><b>Sent:</b> Sunday, September 2, 2018 3:28 PM<br><b>To:</b> Discussion of CHIRP <chirp_users@intrepid.danplanet.com><br><b>Subject:</b> Re: [chirp_users] # of Channels<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div id="yui_3_16_0_ym19_1_1535921887566_12454"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'>Clark,<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12169"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'>As others have noted, the number of 2 meter frequencies (channels) depends significantly where you are located in the US. Some areas use 20 kHz channel spacing, while here in Southern California, because of the large numbers of licensed hams, and high demand for frequencies, the local area 2M frequency coordinating body (TASMA) has opted to publish a frequency coordination band plan with 15 kHz channel spacing. It is strongly recommended, and "good amateur practice" says that one adhere to these coordinated frequency band plans as much as possible.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'>TASMA officially lists 87 Repeater frequency pairs, and 46 recognized simplex channels, and a handful of special use channels in the So. CA 2M band plan. In the event of interference complaints, the FCC will generally respect the local coordinating body's band plan and resolve the issue in conformance with that plan. Again, adhering to local band plans is considered "good amateur practice" a FCC requirement of all hams.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'>You should find the website for your geographical area's local Frequency Coordinator and check to see if they have specific frequencies or channel band plan published as recommended frequencies. While one can legally deviate from the band plan, so long as they don't cause interference to users conforming to the band plan, still following the band plans where they exist is again, required "good amateur practice".<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12123"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'>HTH and 73 de Ray, AE6H<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12816"><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-size:12.0pt;font-family:"dfkai-sb",serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_12570"><div id="yui_3_16_0_ym19_1_1535921887566_12569"><div id="yui_3_16_0_ym19_1_1535921887566_12568"><div id="yui_3_16_0_ym19_1_1535921887566_12770"><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>On Sunday, September 2, 2018 1:34 PM, r norris via chirp_users <<a href="mailto:chirp_users@intrepid.danplanet.com">chirp_users@intrepid.danplanet.com</a>> wrote:</span><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p><div id="yui_3_16_0_ym19_1_1535921887566_13759"><div id=yiv2418625289><div id="yui_3_16_0_ym19_1_1535921887566_13758"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p><div id="yui_3_16_0_ym19_1_1535921887566_13773"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><br><br><o:p></o:p></span></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div id=yiv2418625289yqtfd93214><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>On Sep 2, 2018, at 15:39, clark prather <<a href="mailto:harpzilla@gmail.com" target="_blank">harpzilla@gmail.com</a>> wrote:<o:p></o:p></span></p></div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13796"><div id="yui_3_16_0_ym19_1_1535921887566_13795"><div id="yui_3_16_0_ym19_1_1535921887566_13794"><div id=yiv2418625289yqtfd51600><div id="yui_3_16_0_ym19_1_1535921887566_13798"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>When I program my Baofeng I have 129 Memory Channels for different Frequencies. If I had a million Memory Channels, how many could I fill for 2 meter?<o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1535921887566_13793"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div></div></div></div></blockquote><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13772"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>The last time I messed with it, there were 73 repeater “pairs” (input-output frequencies) on 2 meters.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13771"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13770"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>There are a number of simplex frequencies. These “channels” have been coordinated with the ARRL and local repeater groups throughout the country and world.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13769"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13768"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>Go poke around on <a href="http://arrl.org/" target="_blank">arrl.org</a> and read about “Band Plans”<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13767"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13766"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>Channels or memory is just a term the radio world uses to say what radio frequency will be received or transmitted by the method your radio “remembers” that function and type of signal.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13765"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>Each type of radio signal takes up more “frequency” or space of the spectrum. Some FM signals are 15khz wide, others 10, some 7.5.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13800"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13799"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>The old analog TV signals were 5 mhz wide.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13760"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13801"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>Your radio is tuned to the center frequency, then decodes what is received, however “wide” it is… AM, FM, FM music, data<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>If you tune your radio to 146.000 and listen to a transmitter doing 5khz deviation voice, FM, there is “stuff” at 145.995 and 146.005. using 10 khz of the “frequencies” or spectrum.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>Two meters is 4 million hertz wide. 144.00 to 148.00 Mhz. How many 10khz wide voice signals will fit?<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>No radio is perfect. There is a need to leave some space between “channels” so a strong transmitter near you does not trash a weak signal on the next channel you want to hear.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13821"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>So there is only so much room for a number of “channels” in any frequency range, depending on the type of signal. Go tune across the FM broadcast band. (75khz deviation)<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13822"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13823"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>Go read some basic stuff, then ask better questions, you will get better answers.<o:p></o:p></span></p></div><div id=yiv2418625289yqtfd35303><div id="yui_3_16_0_ym19_1_1535921887566_13757"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13824"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1535921887566_13825"><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div></div></div><div id=yqtfd79281><p class=MsoNormal style='background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'>_______________________________________________<br>chirp_users mailing list<br><a href="mailto:chirp_users@intrepid.danplanet.com">chirp_users@intrepid.danplanet.com</a><br><a href="http://intrepid.danplanet.com/mailman/listinfo/chirp_users" target="_blank">http://intrepid.danplanet.com/mailman/listinfo/chirp_users</a><br>This message was sent to Ray at <a href="mailto:rdhutch@pacbell.net">rdhutch@pacbell.net</a><br>To unsubscribe, send an email to <a href="mailto:chirp_users-unsubscribe@intrepid.danplanet.com" id="yui_3_16_0_ym19_1_1535921887566_13826">chirp_users-unsubscribe@intrepid.danplanet.com</a><o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:black'><o:p> </o:p></span></p></div></div></div></div></div></div></body></html>