[Elecraft] [PX3] Carrier Null

[Joel Black]

I’m not sure, but I think the problem has solved itself. I’m listening to a 75 m group this morning and listened to a little 20 m PSK last night and the artifacts, for the most part, appear to be gone.

Not sure what happened or what I did to fix it - I did not go through the Opposite Sideband Nulling procedure.

Here *is* what I did:

1. After I received the PX3, I updated the F/W. After I updated, I saved a config (yep, should have saved before but forgot). I reloaded that saved config last night.
2. Recently, I tried a new power-up procedure - KX3 *then* PX3. I had the power jumper set on the PX3 to turn on when DC is applied and didn’t like the lack of control that offered so I put the jumper back.
3. I have arranged my cables a tad differently and will take a picture of that arrangement trying to duplicate it each time.

Someone on this list or the Yahoo reflector posted a picture of a BNC star washer with a ground lug on it. I’m going to order one of those and also put some kind of ground lug on the PX3 and make sure I have a good ground in the shack and *try* to eliminate any ground loop issues between the KX3 and PX3.

Late yesterday afternoon, I was kicking myself; today, I’m quite pleased with the PX3 - fickle lot, aren’t we?

73,
Joel - W4JBB