[Elecraft] K3/MMTTY/Signalink Problem

[Joe Subich, W4TV]

 > Also as I understand it Signalink does AFSK, so why
 > does it appear to be working in DATA A. Does the Data A mode
 > selection have something to do with the reduced power out?

AFSK A has a very narrow *transmit* filter on the Mark/Space tones to
prevent distortion and hum.  If the MARK in MMTTY is not the same as
the MARK in the K3 (Pitch), you will get no output.

As for DATA A, depending on the transmit filter, you can have as much
as 1 to 1.5 dB of passband ripple.  -1 dB is roughly 80W output for a
nominal 100W.

I strongly suggest making sure the MMTTY Mark and K3 PTICH are set
to the same frequency, that you turn NET ON in MMTTY, turn AFC OFF,
*TUNE WITH THE K3 VFO* while using AFSK A and carefully read both
the K3 Owners Manual and MMTTY help files.

73,

    ... Joe, W4TV


On 2014-10-14 4:56 PM, paul ecker via Elecraft wrote:
> Thanks for all the inputs on my question.I have made some progress. I
> changed the K3 mode from AFSK to Data A, and in MMTTY have"Rev"
> selected. I am now upon TX getting power out, movement on the ALC
> meter (4 bars with 5th flickering, mic line set at 31) and hearing
> Diddles. So MMTTY is working for TX and RX better than before, and I
> had a QSO a bit ago with W1AW/4.- However with K3 power set at 85w, I
> am only  showing 30w power out on both K3 RF meter and on the KPA
> digital readout.- Also as I understand it Signalink does AFSK, so why
> does it appear to be working in DATA A. Does the Data A mode
> selection have something to do with the reduced power out?
>
> 73 Paulkc2nyu
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