[Elecraft] Transmit audio monitor level control

Augie Hansen augie.hansen at comcast.net
Sat Jun 30 16:03:39 EDT 2007


AB7R wrote:
> ...
> Of the four knobs to the left of the main tuning knob, the lower right one
> has a HOLD function of MON (Monitor).  This adjusts both the sidetone level
> and monitor level in other modes.

Hi Greg,

Thanks to both you and Lyle for the timely responses.

I had assumed there is a way to set the desired monitoring levels and I 
appreciate the description of the means by which this is done. However, 
there is still a question about the effect of changes to the receive 
audio levels (AF and SUB) on those monitor levels. If the K3 is like the 
K2, there will be no effect, which is what I hope will be the case. I 
don't want the TX monitor level to change when I adjust RX audio levels.

Examples of rigs that do alter the TX monitor level when the RX audio 
level is changed are all of the Icom transceivers that I have owned. 
They inject the TX monitor into the audio stream before the AF gain 
control circuit and treat that control as a "master" level control for 
both RX and TX. On the other hand, my Yaesu FT-1000mp injects the TX 
monitor signal into the audio chain on its own input, separate from the 
RX audio, as in a mixer with individual level controls. That way, I can 
crank the RX audio way up to hear the weak ones and not blow out my 
eardrums with monitor audio when I transmit. Much safer in my view.

Cheers,
Gus Hansen
KB0YH



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