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Evan, You are correct, I missed the 100pF cap. Thanks. I had noticed that computed values for L508 and L512 were different than the ones Hans had said he simulated with. I figured since I was

My rule of thumb is 10dB gain minimum, maybe 6dB for a device for which no higher power alternate exists.? Pretty much what Allison said. There is an amplifier figure of merit called "power-added

And thank you verry much also AkI. This was exactly what I was looking for. vy 73 Michael DB2GM

Hello all thank you very much for your inputs and comments. The links help me also for future calculations. vy 73 de Michael DB2GM

I bought a couple of Hans' dummy load kits (because of their great design) and populated them with different values of resistors. For a 100 Ohm load: 10ea. 1K 1% 2W resistors. For a 200 Ohm load:

Final update... I sent it off to Jeff (W1NC)and he turned it around in a couple days. The main problem was the CPU. My guess is the two bad SMPS boards were the root cause, but Jeff did clean up some

... or 3 dB attenuator - open and shorted output.

6 dB attenuator - open and shorted output.

That is really nice, Dave! I wimped out and bought my kit with the case... hoping to start on it this weekend. You definitely will not have anyone claim it is another QMX+ "twinkie". After I built my

Hey Hans, Looking at the Assembled kits order status ( https://www.qrp-labs.com/qcxmini/assembled.html ) , one can be very pleased with the scrolling speed. Your "elves" assemble our much-wanted

Been using one since my Novice days. 1975. Was created not knowing any better because the vaporizer, ya know the old like hankscraft vaporizer for when you are sick? And if your water was too "Soft"

What is the spare tip situation?? Much of the Chinese stuff uses Hakko tips, if this one does I might look into it. I am also considering this one, which has the temperature sensor embedded near the

Not the intended recipient, but I use this https://www.ffonts.net/TGL-0-17.font for my MIL and test equipment builds. It is a variation on DIN17, from 1938:

Soda/salt water dummy load?!? Why didn't anyone tell me it could be this easy and cheap? A web-page about the idea: https://www.qsl.net/k5lxp/projects/SaltLoad/SaltLoad.html Thanks for the tip,

It is a nice feeling of accomplishment when the part "snaps" perfectly into alignment with the PCB lands, almost like magic. 73, Don N2VGU

Many thanks everyone.? Lots to ponder. A couple to try with what I have on hand. GREG KI4NVX? Yahoo Mail: Search, Organize, Conquer On Thu, Feb 27, 2025 at 11:02 AM, Mehmet Dinch via

I should of added, connect your dummy load to the antenna port of the ATU. Mel. M0KMD.

Hi Greg, How about usin an antenna matching unit. You should be able to set the SWR where ever you want it. Cheers, Mel. M0KMD

Haha! That’s an EFHW I built using a tiny transformer and some 26lb steel fishing line. It’s spooled so I can deploy it quickly and has knots at each band so I know where to clip the