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Hi Allison All good points, however consider in the context, this is a PTO I am building for my Norcal 2030, a rig which has phenomenal dynamic range and large close in signal handling while sipping

It is pretty funny picturing those kilowatt capable match boxes on a picnic table beside a diminutive QRP xcvr. But food for thought: The QRO guys build those big clunky (but low loss) boxes and run

Generally with PTO radios of the tentec and Drake realm if the PTO is drifting something isn't right.? I start there.? ? Exceptions are Swan and Atlas plus a few older Tentec like the Argonaut 505

Hi Phil, Yes, all discussed before, and the original design is a bit sharp anyway ;-) The TL;DR? answer is to take 1 or 2 turns off each toroid, or try spreading the coils out a bit. That's all you

Hello All! I just built and tested a 20 meter low pass filter. My Rigol DSA 815 says that it's down 1.9 db @ 14.000 MHZ. Isn't that a little too soon? I would think that the roll-off should start

Hi George, Several others have offered links to kits. You may have seen them shortly after you sent this message :) The advantage to kits over scratch building is having all the parts in one place at

Hi R. Tyson Thanks for the suggestions ! The ATU sounds like a great project. ?Do you know if anyone offers a kit version of the one you described.? Thanks George

Hi R. Tyson, I have a pair of Johnson Matchboxes. Those will handle QRP for sure. I have used them at 5 watts and less many many times. They do not even get warm! <evil grin> I also have the BLT that

I would concur. Specifically on the Z match tuner... the Emtech ZM-2 tuner is one that offers good tuning for coax and twin lead, and has the built-in resistive bridge for finals protection while

Antenna, ATU, SWR meter, dummy load ...? ?that's assuming you don't already have all of these. If you do have them - are they QRP versions ? I built a Z match ATU with a resistive bridge. That way

The 10W PA.? The QSX will be available with and without the PA for those that built it earlier.

20 watt dummy load kit?

Hi All As I patiently for the release of the QSX is there anything I can start building? Thanks George

Wes, This thread was started to look for an alternative method of replacement for a dead uP in my QCX.? As in an alternative to setting around wondering if "Heck" will freeze over before a

OK2BQN, The key in your method is "original microprocessor". Would you not need to have a functioning original uP to get it to give up the code? This thread was about how to handle a non-functioning

It would depend on what you wanted to aspect you were wanting to tune- min SWR or Max signal. If you had a good stable signal source to listen to on the QCX, you might find the S-meter would respond

Perhaps my situation is unique... I've had no issue loading the QSX firmware into a blank Amtel chip.? My experience has been that Xloader or even the AVR programmer will work.? The aforementioned

Chris M0XFL? Hello, did you just connect 4 wires to U3S and didn’t do anything else? Please give a direct link to this module, which will work exactly with U3S without additional manipulations.

Is there a way to tune your dipole antenna (cut it to length) with the QCX without any other instruments? I know the QCX has the S-meter. Can this be used for tuning purposes?

I received my Bourns encoder today (The one Jack found) and it looks nice. I think there is enough friction in the bushing that the felt may not be needed but the felt sure is a good option and thanks