[Elecraft] RX SHFT=8.0 I.F. Image (16 kHz) Nulling
David Orman
ormandj at corenode.com
Sun Feb 15 20:17:07 EST 2015
Hi,
I've been performing all of the "All-Band Receive Opposite Sideband and
I.F. Image Nulling" steps without issue using my PX3 (and AA-54) as a
signal generator. I'm at the last section, "RX SHFT=8.0 I.F. Image (16 kHz)
Nulling", and am having trouble. Following the directions, and setting my
KX3 16KHz up from the signal source:
7. Optimize RX SHFT=8.0 I.F. image gain and phase settings as follows: a.
Set both the signal source and KX3 to the target band (starting with 160
m). Recall that the VFO should be set 16 kHz higher than the signal source.
Make sure you’re in CW mode. (Note: You can change bands and modes from
within the RXSBNUL menu entry.) You should hear a strong signal, and see an
Smeter reading of between S9 and S9+30 dB. If not, adjust the preamp
setting or the RF source level.
This step, I do _not_ hear a strong signal, I hear no signal at all. If I
turn on RIT to -1.1, I hear a strong signal (looking at the next step.)
What am I doing wrong/missing?
Thank you,
David
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