[Elecraft] K3 Rf gain tracking (main vs. sub)
Stan Gibbs
stan at ajaxsoftware.com
Mon Oct 25 12:57:21 EDT 2010
Stan Gibbs wrote:
>
> Thanks, Mike, I'll do the same measurement and see what it tells me.
> Erratic behavior seems most likely due to a bad pot, but, as Sherlock
> would say, theorizing without data is a capital mistake.
>
Sherlock was right; it wasn't the pot. The behavior of the voltage on its
wiper is exactly what you would expect: a smooth transition from 0V to 4.7V
for the full travel of the knob from CCW to CW.
So, the question remains, what could cause the very non-linear behavior that
I observe with the audio and S meter?
This result also renews my curiosity about whether others have observed any
non-linearity around the 10 o'clock position of the RF gain when listening
to a test signal like an XG1?
-----
73, Stan - KR7C
--
View this message in context: http://elecraft.365791.n2.nabble.com/K3-Rf-gain-tracking-main-vs-sub-tp5668917p5671487.html
Sent from the Elecraft mailing list archive at Nabble.com.
More information about the Elecraft
mailing list