I took a couple of plots of the K3’s Line output compared to the Headphone output
For these plots the K3 was connected to a wideband noise generator. measurements were made with my Delta 44 soundcard
The line out is in green. the Blue trace is the headphone output with the volume set to match the level of the line out
The first plot is with the line output level set to 100, the second plot is with the line output level set to 5
tell us non-technical folks what your plots suggest. Thanks.
My plots would suggest that you should run the LIN out settings on the K3 as high as you require to drive your soundcard correctly. The amount of distortion present on the lin out does not seem to increase as the output level is turned up on my K3, it actually decreases.
Ghosts on the waterfall should be dealt with by choosing an appropriate filter and filter centre frequency as well as setting the dynamic range of your waterfall appropriately.
Your mileage may vary and each setup is different.
—
A: support@elecraft.com
Oggetto: Problem on the K3 sub receiver band independence
After to
have installed the sub receiver module in my K3 rx-tx, and as from the
owner’s manual
(on pag. 37), I try to set the sub receiver to a
different band from main, using “BSET” and
“BAND” buttons. So this set
don’t work, and on the display I read “MAIN”.
Before I set in the
CONFIG KRX3, the aux rf source on ANT-BNC.
Then in the CONFIG I try to
set to YES, the VFO IND: and again this set don’t work properly,
and on
the display I read “UNAVAIL”.
The MCU firmware uploaded is REV. 2.67 (
the latest regular release).
So where is the problem and how can I
solve it ?.
Many thanks and 73 de IV3YYK Pierino de nardo.