[Elecraft] AC hum on tune

[Sam Morgan]

Figured out the culprit of my "AC hum on your tuneup signal"

There is a local ham here who is blind, therefore,
He has one heck of an ear for all things audio,
He helped me setup my TX EQ a while back,
and it finally dawned on me to ask him to listen to my tune signal,
and sure enough, he was able to hear and identify it.

But it's not a power supply's 60cps or even 120cps,
it's a slight bit of RF on my signal.
of course, it's more prevalent when using the the amp,
(450w out of an AL-811, driven with 32w from the K3)
and when I go to 100w out of just the K3 it's almost inaudible.

So, suspicions confirmed, the K3 is NOT sick,
nor is it poorly designed,
sorry about that last comment,
but due to the tone of a few recent posts,
I felt the need to restate the obvious here! :-)

Now, back to chasing my rf grounding gremlins around the shack.
tag ur it, sigh, hi hi.

Thanks again Elecraft for great products and service.
-- 
GB & 73
K5OAI
Sam Morgan