Ray J,
The best thing in the world to keep from over driving a transverter
is to use the DEMI Tranverter Interface Board. I finally learned my leason
and invested in the kit while at the SVHFS Conference this year. It works
by applying a fixed ALC voltage to the IF rig to keep its power output
minimal. The DEMI transverters are very sensitive to drive in that they
take very little to drive it to full output. The DEMI TIB is a very
inexpensive investment and it will pretty much garrantee that you will not
put too much power into your transverter. I seem to recall that I only paid
$20 for the kit. Worth every penny!
73,
Bill,
WF4R
----- Original Message -----
From: "Ray J" <ray@w9ray.org>
To: <vhfcontesting@contesting.com>
Sent: Wednesday, December 21, 2005 8:26 PM
Subject: Re: [VHFcontesting] repairing a transverter
>
>
> I would think that the mixer is the first thing in line to be killed,
> unless you are running the low drive option where there is a mmic amp
> in the tx IF line then that might have died...
>
> Ray J
> W9RAY
>
> Dan wrote:
>
>>I'm finally getting around to repairing my old transverter. It's a DEM
>>432-28, the old 10 watt version. Anyway, the last time I went Roving it
>>stopped transmitting. I'm pretty sure I hit it with too much drive
>>power. [maybe half a watt or so, not 100 watts anyway].
>>
>>I'm guessing this may have happened to some of the folks on this list a
>>time or two [or twenty ;-) ] so I thought I would ask for tips before I
>>open it up.
>>
>>I guess I also need to look into a QRPp power meter to monitor my IF
>>drive level...
>>
>>Thanks,
>>Dan
>>
>>
>>
>
> _______________________________________________
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> VHFcontesting@contesting.com
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>
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