[Elecraft] Re： Solved - XV144, XV222, XV432

[Wayne Burdick]

Hi Colin,

These issues will all be addressed in our transverter kit, PCBs, and  
documentation as required. Sorry for the inconvenience.

73,
Wayne
N6KR

> Thanks to many of you on the list, I have 3 pretty happy transverters.
>
> Heat problem - solved by replacing thermal pad between heat spreader
> and case. Use Thermalcote heatsink grease instead.
>
> Scraped paint off the case under screw heads, using a cylindrical
> dremel bit, for all 3 XVs. Replaced the black screws with chrome or
> stainless on the XV432. This helped the output substantially.
>
> XV144 - the supplied crystal is out of range, and Elecraft will be
> replacing. Turns out they started using same one for XV144 and the
> internal K144XV. But XV144 will be more than 10KHz off, so you can't
> correct for it.  I added a small series variable inductor between
> xtal and ground, and this helped me get it within 5KHz. You can't
> bend these crystals very far.
>
> XV222 - I removed L19, jumpered it out, and replaced C12 with a
> variable capacitor. Schematic says 12pF, assembly guide 18pF, and a
> variable let me get the frequency within a few hertz.
>
> XV432 - drilled a couple holes near U6 and jumpered top to bottom.
> There just arent enough vias on this board. Replaced my U6. Output
> now pretty stable. I still think PA Bias instructions in alignment
> are wrong for this unit.
> Fan wires would not go through the big via, so I soldered it at the
> diode on the top of the board.
>
> 73 VE3MSC
> Colin
>
>
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