[Elecraft] [K3] Line out, speakers, and L-mix-R settings...

[Richard Ferch]

Mike,

Thanks for pointing that out - I had completely forgotten about that 
option. I guess it's time I printed out a new copy of the manual! Of 
course, that changes the answer to James' question #2; if you want the 
LINE output to be a clone of the headphones output, set CONFIG:LIN OUT 
to =PHONES.

With CONFIG:LIN OUT =PHONES, when the subRX is off, the main RX is in 
both channels. This setting seems tailor-made for James' situation 
(listening to speakers through a sound card).

For digital modes, as Joe has pointed out, when SUB is on, you use the 
two channels to feed two independent copies of MMTTY (or other 
software). You do not want any mixing of the two signals. Also, you do 
not want the volume control to affect the audio level going into the 
decoder. If you use the audio pitch as a tuning aid, you want the 
ability to turn the audio down or to change the balance between the two 
channels without interrupting the ongoing decoding of both signals.

When SUB is off, you only use (or need) one channel in the sound card. 
The right channel waterfall just goes black when the sub RX is off. You 
can use two different decoding algorithms on a single signal by running 
two (or more) independent decoding programs (e.g. two or more separate 
copies of MMTTY using different profiles) from a single channel in the 
sound card.

73,
Rich VE3KI


NF4L wrote:

> Re: point #2.
>
> I don't have a sub rx, so it's never been a problem for me, but I'm thinking of
> adding one.  How does that work if there's a RTTY  signal on both VFO's (simplex)?
> Would you have to tap A>B?
>
> The manual sez "Use CONFIG: LIN OUT to set the level, or to switch from a fixed-level
> setting to =PHONES." Does that give you a level control using the AF knob?
>