|[AMRadio] watt meter|
brett.gazdzinski at verizonbusiness.com
Wed Mar 1 19:36:31 EST 2006
If I could find out the diode type, I could replace them,
the inductor looks to be a match with another one
It's a small potted thing, almost looks like a cross
between a resistor and a small electrolytic cap.
I don't know how you would calibrate it for average and pep,
the average I could do off another working meter.
I use the watt meter partly as a performance monitor, its right
in front of the operating position, so if the swr goes wacko,
or the audio screws up, the meter will show it.
I have a regular scan of the plate current, grid current,
watt meter, mod monitor when I first get on, then every once
and a while do a re-scan.
There is a hole in my scan now!
> I have a Bird 4411 which uses one slug for 2-30 Mcy. The
> meter has a switch
> that will change the power scale from 10 watts to 10K watts.
> It is not a true peak meter but there is a formula that
> derives it in the
> book. The 4411 is a 4410 with provisions for AC input, the
> 4410 is 9V
> battery powered only, I think. The drawback to these meters
> is you usually
> find the meter without the slug, and the meter is expensive.
> I have seen
> them at hamfests, but the slug is hard to find and very
> expensive. It is
> accurate to 5% of full scale.
> As for the diodes most any matched diodes would probably
> work. Seems as if
> the Drake MN 2000 had 1N295 or some such. Someone with a
> manual could
> check. Get a handful of the NTE replacements and match them,
> they are
> 73 Jim
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