[Elecraft] XG2 low output

[Andrew Moore]

I forgot to mention... thanks Chuck W5UXH....

--Andrew, NV1B
..


On Fri, Jul 22, 2011 at 10:03 PM, Andrew Moore <andrew.nv1b at gmail.com>wrote:

> Problem solved!
>
> Thank you in particular to Tony KT0NY, Don W3FPR and Alexey.
>
> Turns out that D1 was the problem.  Note!  It wasn't due to a short as some
> had suggested, but rather, checking the errata sheet revealed that on the
> Rev. A board (like mine), the silk screen was backwards.  The banded end of
> diode D1 (1N4148) should be nearest to R7, which is the opposite of what the
> silkscreen suggests.  Turns out my XG2 was assembled incorrectly from the
> start (I'm guilty).  Not sure if the errata was issued yet when bought my
> XG2 or if that came afterwards, but in any case, I cut out D1 and replaced
> it in the opposite direction and instantly have a proper 50 uV signal.
>
> I did also remove D2 (the rectangular "output" LED) but I'm not sure if
> that was a problem or not.
>
> Thank you all; I would never have noticed this problem unless you mentioned
> it.  Now I will proceed with calibrating the K3 using this reference signal.
>
> --Andrew, NV1B
> ..
>
>