[Elecraft] K3--Too much ALC creates energy on opposite sideband?

[Don Wilhelm]

Nate,

One thing is that you have a LOT of compression. That may be causing his 
receiving to show excess energy, maybe even lapping over into the 
opposite sideband.

First set the compression to zero, then either connect a dummy load or 
use TX TEST and adjust the mic gain for 5 to 7 bars on the ALC meter - 
the 7 bars should be seen only on peaks.

After that, you can increase the compression, but I would limit it to 6 
dB for normal operation.

73,
Don W3FPR

On 8/28/2019 12:40 PM, Nate Bargmann wrote:
> I received a note this morning advising that I should check my ALC as he
> is seeing some energy on USB when I check into a 75m voice net on LSB.
> I am using an MC-50 microphone and am running the mic gain at 35 and the
> compression at 11.  My thinking was that generating opposite sideband
> energy would be quite difficult with the K3's DSP.  Am I wrong?