[Elecraft] Alignment of VCO - Problem

[Don Wilhelm]

David,

Reviewing your voltage readings with my 2nd cup of tea this morning, I find
Q17 might be giving you a problem.  Temporarily short the drain of Q17 to
ground and see if your VFO starts oscillating.

If it does, then Q17 may have been zapped during handling and installation -
those 2N7000s are static sensitive.

73,
Don W3FPR

> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net]On Behalf Of David C Dawson
> Sent: Wednesday, November 15, 2006 3:07 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Alignment of VCO - Problem
>
>
> Double-checking DC voltage measurements on 3 transistors.
>
> Item Measured  Chart
> Q18
> ---
> G:   0.00      -1.0     !!
> S:   1.97 **    2to3
> D:   7.97       6.3     !
>
> Q17
> ---
> G:   2.16 *     2.2
> S:   0.00       0.0
> D:   1.97 **    2to3
>
> Q16
> ---
> E:   0.00      0.0
> B:   0.55      0.6
> C:   2.16 *    2.2
> --
> David Dawson
>
> The greatest dangers to liberty lurk in insidious encroachment by men
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