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VHF radio power

DH
David H Sorenson
Fri, Sep 11, 2009 2:07 PM

On Fri, 11 Sep 2009 01:54:25 -0400 "Ron Rogers" rcrogers6@gmail.com
writes:You are measuring power output from the transmitter and not
radiated power from the antenna. You do not say that you spoke on the
radio and fully-modulated your input. In theory, you should increase your
transmitter power output if you speak into the mike in a normal manner.

REPLY:
Ron, my man, you are thinking of AM (i.e., amplitude modulation). VHF
radios are FM (frequency modulation) and frequency modulation does not
increase the amplitude (i.e., power) of the RF carrier as AM does. So
speaking into the mike (i.e., modulating the carrier) on a VHF radio does
not change its power output.

David Sorenson
Duluth
(An old FCC general class guy)


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On Fri, 11 Sep 2009 01:54:25 -0400 "Ron Rogers" <rcrogers6@gmail.com> writes:You are measuring power output from the transmitter and not radiated power from the antenna. You do not say that you spoke on the radio and fully-modulated your input. In theory, you should increase your transmitter power output if you speak into the mike in a normal manner. REPLY: Ron, my man, you are thinking of AM (i.e., amplitude modulation). VHF radios are FM (frequency modulation) and frequency modulation does not increase the amplitude (i.e., power) of the RF carrier as AM does. So speaking into the mike (i.e., modulating the carrier) on a VHF radio does not change its power output. David Sorenson Duluth (An old FCC general class guy) ____________________________________________________________ Best Weight Loss Program - Click Here! http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTFoYa78EeU4SiEh9zjy6xT3b4KlGs9EMlDAvwo3HbJzZ124zeF5gE/