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

Wes wes_n7ws at triconet.org
Wed Aug 28 13:45:11 EDT 2019


Although the manual doesn't say so, according to an ARRL review, the K3S is 
specified to have undesired sideband suppression of >50 dB.  ARRL claims an 
optimistic >70 dB.

So if you are extremely strong at the other guy's place, he might easily hear an 
opposite sideband, even though your radio is operating correctly.  Ask him what 
the ratio is.

Wes  N7WS

On 8/28/2019 9:40 AM, 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?
>
> I'll try working with him some morning and back down the mic gain a bit
> and see what that does for him.
>
> 73, Nate, N0NB
>



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