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"Robert11" wrote: Hello: new at his. Found the following freq's that apparently my town utilizes. Are the modes fm for Both, or... ? 39.560 MHz 123.000 The 123.0 one is particularly perplexing for me, as I thought that puts it in the middle of the AM band, which I always thought would be just for aero. Would a Town service use AM rather than fm ? Why, if so ? Thanks, B. Are you sure the 123.0 is a frequency? If it is then it is probably related to an airport in the area. There is another possibility however" 123.0 is a valid PL tone, if the listing you found the 39.56 freq from relates the two that might be the case. Often freqs with PL tones are listed as "39.560 (123.0)" or some similar format. PL is a form of sub-audible signaling used to reduce interference and control access to radio systems. Several models of scanners utilize PL features for the same purposes. It may also be referred to by other trade names as well as CTCSS. |