[Elecraft] New KX1 low power and 20m oscillation

Stan Gibbs stan at ajaxsoftware.com
Tue May 8 22:25:57 EDT 2012


Don, I tried your experiment but it had no effect. I just grounded point A
because it is damn hard to jumper Q7.  R28 measures good and is well
soldered.  It has -0.25V or so on the base side and 5.5V on the other during
transmit.

I also tried reducing the drive pot and, while the signal definitely
declined in amplitude, the sidebands were still present.

Could this just be an artifact of using my K3/P3 to view the waveform?  If
so, why would the 40m signal be so different?


-----
73, Stan - KR7C
--
View this message in context: http://elecraft.365791.n2.nabble.com/New-KX1-low-power-and-20m-oscillation-tp7531133p7541505.html
Sent from the Elecraft mailing list archive at Nabble.com.


More information about the Elecraft mailing list