I may sound a bit like a broken record here, but I really like
Motorola GM300s and R1225s for these jobs. Particularly the 10W
versions of both. Heat stays under control with a 10W radio much
better than the higher powered ones (even turned down).
On Oct 11, 2008, at 1:09 AM, tedsims wrote:
I've been asked to help out in the replacement of an elaborate 2m
repeater system that has fallen into disrepair. At one time, there
were up to four remote receiver sites, with UHF links to a main site
with voting equipment.
The duplexer, controller, voter box(RVS-8), an external PA, the
antenna system at the main site are to remain, but all the radio
equipment aside from a PA is to be replaced, including the links
radios, which are on frequencies around 441MHz.
I've worked with surface mount almost exclusively since I started work
in 1989, and would like to avoid equipment with a majority of
thru-hole parts if possible. The other person likely to be modifying
and interfacing radios also feels at home with surface mount.
So,I looking for suggestions - proven, reliable commercial radios that
might make good candidates for conversion to repeater hardware,
specifically -
* Receivers, and transmitters for UHF links (1~2W would do)
* Receiver and transmitter for main site. We need about 12W to drive
an external PA. (Thinking about running a mobile transmitter at much
reduced power, with mods to improve efficiency at lower power).
I'm hoping that I can identify equipment that seems more "familiar" to
me on the inside (PLL synthesis, SCF audio processing, LDMOS, surface
mount). I know the MASTR II, Mitrek, etc. are very fine radios, but
the inside of one of these looks completely alien to me. Any
suggestions?
--
Cort Buffington
H: +1-785-838-3034
M: +1-785-865-7206
