[NLRS] 10Ghz _Trouble shooting stories

[Zack Widup]

The IF rig I've been using for microwave is a highly modified Realistic
HTX-100. I built a 2m transverter that just fits inside the space where the
speaker used to be and put it in the rig. I removed the rear heatsink and
associated parts and made a new rear panel with some BNC jacks and other
things on it.

A couple years ago I noticed it started cutting out. In one contest it
finally wouldn't work at all. I tracked the problem down to the LO circuit
not working. I swapped practically every part in the circuit. Wouldn't you
know it, it was almost the last part I checked - a cracked 1000 pF ceramic
chip cap used as a bypass on the emitter of the oscillator transistor.
At least it's done fine ever since.

73, Zack W9SZ


On Wed, May 12, 2010 at 8:39 AM, Bill Davis Jr <cqbilld at msn.com> wrote:

>
>
>
>  Glad you found the problem Joe. Can drive one "nuts" ....
>
> Last night I found a "flying lead" on the QSD chip in a SoftRock I was
> building for show and tell at AU2010. Can't tell you how long I looked!
> Guessing a solderwick accident from the built a couple weeks ago. No way to
> see it without ones eyes at board level looking under the lead with
> backlight and magnification. ARGH.......
>
>  Looking forward to many 10Ghz QSOs with your
>
> 73  Bill  K0AWU  En37ed
>
>
>
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