[Elecraft] K3 & RemoteRig

[Paul Christensen]

Rick, thanks for your comments.  Regarding question #3:

> “3) Not sure what you want here. You should be able to turn down the volume of the remote K3 with the AF Gain control of the Mini. If that makes the CW sidetone too quiet, there is a control for that in one of the RRC menus; not convenient but at least it's there.

Like local mode, the CW sidetone is not adjustable with the AF control when running remote with the K3/K3-Mini/RemoteRig.  But that’s not the issue.  The issue is that the speaker gain is excessive, picks up significant digital noise, and blasts the CW sidetone regardless of whether the sidetone comes back from the K3 at the remote site (with normal latency), or the locally injected sidetone from RemoteRig.  If I access the RemoteRig menu and reduce the sidetone level, then it’s too low when using headphones.  

The K3-Mini’s receive audio and sidetone is excellent with headphones.  The problem is with the gain distribution of only the speaker amp after the K3-Mini’s AF control.  It’s as if the speaker amp is running without any negative feedback.  Maybe I’m not looking hard enough, but I don’t see a schematic of the K3-Mini on the Elecraft website.  So it’s difficult to localize the problem without it. I’ll likely open up a trouble ticket with Elecraft on Monday morning.

Paul, W9AC