[Milsurplus] "More FCC Foolishness"
mstangelo at comcast.net
mstangelo at comcast.net
Tue Sep 14 09:03:45 EDT 2010
Dennis,
Radios have to be Type Accepted by the FCC to operate legally in the MURS, Family Service, CB and GMRS services. Military surplus radios are not.
The best way to go is to get your Amateur radio license. As a side benefit, one can learn some basic radio theory which will help the newcomer in understanding and appreciating the clever designs of those early radios.
Mike N2MS
----- Original Message -----
From: Dennis Weal <w4eal at gmx.com>
To: milsurplus at mailman.qth.net
Sent: Tue, 14 Sep 2010 11:44:10 -0000 (UTC)
Subject: Re: [Milsurplus] "More FCC Foolishness"
There are several ways to go in using Mil surplus rigs without a license and several more if you are a Ham.
There is a service called MURS which allows license free use of 5 channels in the VHF hi band. 151.830, 151.880 and 151.940 Mcs can be used with the old narrow modulation
of 3 kcs. In addition 154.570 and 154.600 Mcs can still use 5 kcs deviation. All these are FM. Maximum output power of 2 watts with no restriction on antenna height (except FAA). Prc-127 and Prc-127A radios can be turned down to 2 watts easily.
Family service freqs in the 462-467 Mcs band is license free as long as 250 mw output power is observed. Most Mil surplus radios cannot be turned down to this level but can be swamped or attenuated to meet the requirement.
And of course good old class D CB freqs at 26-27 Mcs is available too.
Now I know the purists will jump all over this but you can go to wally whirrled and buy so called family service radios with 22 or more channels BUT only 14 of those channels are license free. The balance are GMRS freqs which require a license. And most of the high power radios produce 4-5 watts of power ( the ones that say 20-50 mile range [phat chance]). So if you have a service monitor and a spectrum analyzer you can get the proper modulation or deviation specified for the band you are using and even if the radio is not type accepted you won't violate other users bandwith. Check the receiver osc so that you don't violate FCC part 15 for sperious emissions.
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