Make sure those (all!) cables are fully inserted,
Ted. I've found that to take more "push" in the
case of the KX3 and PX3 than some of my other devices.
Phil W7OX
On 6/13/15 4:39 PM, Dauer, Edward wrote:
Finally got the KX3 – PX3 – KXPA100 system cabled together and on the air
today, all of the F/W updated. All OK but for two anomalies, one of them
a bit of a nuisance.
The PX3 shows a double sharp spike offset from the tuned frequency about
600 and 700 Hz (an eyeball estimate), at about S2. The twin spikes just
stay there a fixed offset away from the marker as the rest of the band
marches by. (The PX3 is in tracking mode – I haven’t downloaded the beta
revision.) Same thing on every band I’ve tried – 10, 15, 20 and 40. Some
other symptoms:
The small bit of spectrum (about 100 Hz) between the two spikes is devoid
of signal – jet black even when the ref level is set so that the rest of
the waterfall span is showing blue.
The spikes appear in CW mode but not in AM or SSB. They switch sides when
I switch cw sidebands – 600 and 700 Hz below center when the KX3 is in CW
rev, and the same distance above center when it’s changed back.
When the i/Q cable is disconnected at either end, the spikes slowly
decline. But with the cable connected and the KX3 power turned off, they
are still there on the PX3.
The spikes remain at 600 and 700 Hz offset from center regardless of the
span setting.
Weird. And troubling, because 300 - 600 Hz is a typical XIT offset I use
in pileups when the DX isn’t working “up.” Anyone have any ideas? Anyone
seen this before?
The other glitch is much less trouble. The KX3 setting sometimes switches
itself from PA Mode On to PA Mode off. I think I’ve figured it out – if I
turn the KXPA100 power off before turning the KX3 off, or if I turn the
KX3 on before powering up the amp, the KX3 must be sensing “no amp” and so
switching itself back to PA Mode Off. But then when the amp comes on, the
KX3 doesn’t sense that and switch back to PA Mode On. An intelligent
default choice, maybe. Any way to defeat it?
Ted, KN1CBR
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