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Re: QRP rags to riches #qcx


 

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I got the internal keyer issue resolved.?

Oddly enough, it seems the problem was RF feedback related to running into a dummy load that was setting too close to the rig.? Later, when I put the rig on my dipole the problem went away.? The long cord on my key probably didn't help.

The QCX 40 seems to be working great this AM, heard? Chinese and Marianas Is. DX.

Power out is abt 3W on 13.8V, probably try 16V later but want to make some heat sinking upgrades first.?

I rough calibrated it by zeroing my SDR on WWV and then calibrated the QCX against the SDR on 40.? It's close enough to find spots where they should be.?

The radio seems to be working fine but the R24 and R17 adjustments did not go right.?? Both adjustments are at minimum with the pots full CCW.? I can't "hear" any trace of the other side band by ear, but I'd feel better abt the situation if I could get a null.

There was a recent thread related to that issue I'll review. ? Also could be my selections of R's trying hit a 500 Hz CF,? might re-do those for 600 hz and see if that flys straighter.

73 Jack KZ5A



On 4/13/2019 12:39 AM, Dave N3AC wrote:

Try the Logitech again, with a mono plug.?

On Sat, Apr 13, 2019, 00:39 Jack Brabham - KZ5A <kz5a@...> wrote:
I just turned it off, set it for straight key, and started using my usual shack keyer Logikey K1.

The internal keyer is not usable, impossible to send coherent code.?? Not even close to being usable.

I noticed one of the QRP kit sites has a board to "fix" QCX keying and apparently I need one.

Same key works fine in my K1.

73 Jack KZ5A




On 4/12/2019 7:26 PM, Chopper wrote:
The key input is designed for a straight key or a paddle depending on what is selected in menu.? It does not work well with most keyers. If using a? paddle mode B seems to work best.



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