[Elecraft] Query re: Builder alert #19

[Dave]

John (and the rest who replied)

Thanks for the information, I'll take out the cap!

Dave, G4AON

----- Original Message -----
From: "John, KI6WX" <ki6wx@pacbell.net>
To: "Elecraft Mailing List" <elecraft@mailman.qth.net>
Sent: Wednesday, January 01, 2003 7:29 PM
Subject: Re: [Elecraft] Query re: Builder alert #19


> Dave;
> When C44 is placed across R7, it can cause U3A and Q11 to oscillate under
> some conditions.  While the readout of the current is very stable, the
> oscillations can cause the current readout to underestimate the true
current
> by 25% or more, especially on the lower frequency bands.  The only way to
> tell if you have this problem is to probe with a scope at the collector of
> Q11.  You can also place an amp meter in series with the K2 and compare
its
> readings with the internal K2 readings while transmitting on the lower
> frequency bands.
> -John
>  KI6WX