Newbie On Coast Guard Freq. Question
Hello:
New at this: Regarding the Coast Guard S&R frequency of 237.9 that I recently read about: Is this the primary S&R freq used most everywhere ? Is it used for air to ground and also ground to air usage by the C.G. ? Is it an AM mode Are all freq's between 225.000 and 399.950 (always) AM ? Thanks, B. |
Newbie On Coast Guard Freq. Question
"Robert11" wrote in message . .. Hello: New at this: Regarding the Coast Guard S&R frequency of 237.9 that I recently read about: Is this the primary S&R freq used most everywhere ? Is it used for air to ground and also ground to air usage by the C.G. ? Is it an AM mode Are all freq's between 225.000 and 399.950 (always) AM ? NO. AM tends to predominate,but this area is dominated by the US military, and there are all sorts of strange RF using things in here. Satellites, Air-ground coordination links, air-air comms, "squad radios" ( a sort of army FRS) are near the upper end of this band, some ground based anti-personnel radars.. And just too make it more confusing, the DOD has been recently changing its band plans ( which were never too strict to begin with) for this band. Thanks, B. |
Newbie On Coast Guard Freq. Question
"Robert11" wrote in
: Are all freq's between 225.000 and 399.950 (always) AM ? Thanks, B. For practical purposes, yes. Anything you are likely to receive in this band without specialized antennas/pre amps will be in AM. If you happen across some odd ball freq not in AM, it will still be received, but garbled. |
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