[Elecraft] K3 ACL setting for PSK31
Haines Brown
brownh at hartford-hwp.com
Wed Oct 29 13:02:32 EST 2008
> The noise you see on the waterfall should correspond with the DSP BW
> you have set using the WIDTH knob. The TX filter must be either the
> 2.8 or 2.7, which ever you have installed.
Indeed, I can increase the width by adjusting the DSP BW width, but
only to a small degree.
As for the filters, I installed the 2.8 kHz and 400 Hz filters, and
apparently assigned the 400 Hz to data modes. But as I indicated in my
other message, I'm having trouble switching the data mode to use the
narrower filter to see if that makes the waterfall the right width.
> Put the radio in TX TEST mode and hit the software TX button to send
> audio to the K3. Now adjust using the MIC gain control (sets the
> line in level) for 3-4 bars ALC. If you are not getting any ALC
> reading your soundcard output may be set too low. Try increasing
> that and try again. I have good success with the soundcard output
> set to about 20%.
Here I'm stumped. My directions for setting ALC in general are
different than setting it for DATA and nothing for DATA speaks of
putting the K3 in to TUNE mode.
When I do hold the TUNE button to enter TX TEST mode, my display shows
that I'm set for about 20 Watts and that I'm using FL2 (the 400 Hz)
filter, but now the mode on the display has changed to CW. If I exit
TUNE, I'm jumped back to DATA mode. While in CW, the ALC reads 7 bars,
which is too much for DATA.
When I do software TUNE in my fldigi, while in the K3 DATA mode,
there's nothing registered on the ALC scale.
--
Haines Brown, KB1GRM
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