[arm-allstar] DRA818V VHF Band Voice Transceiver Module and DRA818U UHF Band Voice Transceiver Module

[Doug Crompton]

I doubt there would be any problem at the 1/2W or 1W level without an amplifier but if you do use one I would be careful on the other hand an amplifier just might improve the situation if it had high Q filtering on the output. Only testing will tell. Many would use these on a dummy load or a minimal indoor antenna for limited range in a local node situation.
73 Doug
WA3DSP
http://www.crompton.com/hamradio


From: ssedgwick at suddenlink.net
To: arm-allstar at hamvoip.org
Date: Fri, 28 Nov 2014 14:22:53 -0600
Subject: [arm-allstar] DRA818V VHF Band Voice Transceiver Module and DRA818U	UHF Band Voice Transceiver Module





Hi David,
 
I’m sure a LPF will be needed to meet FCC requirement in the US.  This 
is based on the results from the website (needs to be translated, I used Chrome) 
http://www.ra3apw.ru/proekty/dra818v/ 
.  This website was based on the DRA818V, but it looks the same as the 
SA-818 so I would expect the same results.  My first test will be on a 
dummy load, hihi
 
73,
Steve_WB8GRS
 
 
 
 Hi Chris & Everyone!

First, Happy Thanksgiving!

Has anyone out there taken a look at the transmitted spectrum from either
of these modules to confirm they meet FCC specs??? As small as they are, I
can't imagine there is any low-pass filtering, etc., that is part of the 
module.

...Just wondering!

73, David KB4FXC

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