I would run it as is if it does not overheat and look for a Syntor X
they are good to go on six for full power.
tom
wd8chl wrote:
On 3/18/2010 10:45 AM, Kevin Custer wrote:
tahrens301 wrote:
Hi all,
Working on a micor mobile to be used as a
repeater (only using the exciter/control board/PA).
Was going through it, and am only able to get
about 75 watts out of it with the exciter on 53.7.
The exciter is putting out 0.3 watts... a bit more
than most exciters I've seen, but they were high band.
I'd expect to only see 75 watts out of a 110 watt PA if you only have
300 mW of drive. Low Band exciters usually have about 600 mW leaving
the exciter on frequencies within original specification, and it's
common to see 150 watts out of a Low Band PA.
Under drive can be a bad thing. I'd look at it with a spectrum analyzer
and make sure it isn't spurious because of the 3 dB of under drive. It
probably isn't, but I'd check it anyway...
Kevin
The other thing I would do is if you have the original tx channel
element, or can get one that's in the right area, like around 47-49 MHz,
put that in and tune it up there and see what you get, if you didn't do
that when you first got it. If it makes spec, then it might be time for
some mods or something.
I know someone who put a Micor mobile on 53.77. It never did make full
power up there (it was good on the original freq., 47-ish), and was set
to run at abt 50W I think. At that point, it was clean, and stayed cool
with a fan.
53.7 is pretty high for one of those.
------------------------------------
Yahoo! Groups Links
