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https://www.youtube.com/watch?v=9vhkpnvjBAE

I spent the first 10 years as a ham QRP and worked the world and I was lucky to have a dipole and vertical (vertical worked better). Now 40 years later I'm getting back in and going QRP w/ EFHW.

Be very careful playing on 160m in the uBitX stock configuration. The PA easily puts out over 30watts with the second and 3rd harmonics to join the party as well. You should have a fuse in-line to

The problem with relying on tuners to cut harmonics is it is hit or miss. I have a L network tuner I use. Sometimes, on some frequencies, my antenna is in near prefect tune and the matching box is

Would something like this on the output help?

Bill K8UH, I think part of the problem here is many get posting one by one in the Email and from moment to moment they have at best a vague notion of whats going on till it grabs there attention. The

John: Unfortunately, my uBitx Raduino died,and i haven't had the time to fix it and test my circuits. I should get to it this week.However the simulations are clear, it will work. The fix though is to

I'll check the finals. I have some spares, just in case. I'd love to be able to control the power out on the uBitX without opening it up and turning a trimmer pot. If it had a control for output

Based on what you have told us.? Beats us. Likely finals. First without a load assure yourself the power supply is ok. The easy test for fried finals is pull the wire that power them (and them only).

For a parallel-resonant transformer, we don't want an excessively high permeability; what we want is the core material which will provide the highest Q at the frequency(ies) of interest.? The

Denis, Lots of static crashes, and very few signals.?? Dan, W2DLC

Step 1: Out with the DVM. 73 de ZL2DEX

I was tuning up on 160m, and the poor thing went dead. Won't power back up, either. Looks like I need to tear it down and find what mischief I did. Finals? Or power supply? Suggestions from the

Chris, what’s your antenna setup like? I am also on 40m CW, but in Ohio. 73 -- Adam Goler, PhD Cell: (425) 985-8700 "Fear is the mind killer."

Dan, I have been calling CQ on and off from 3:00PM CST and nothing. I am not hearing much on 40M. Will look for you later. Denis, WB8SKP

Hi Brent, First,I cannot comment on whatever an l-match is unless you an l-network to match the transmitter for 50 ohms. The usual configuration has the inductor in series and the tuning cap to ground

It has been reported many times that while s-9 is suppose to be a 50 uV signal and the S unit is 6 db, almost no receiver of the ham grade will ever meet both if any of those numbers. I have a couple

Adam, The microphone is polarized. The switch you had received is connected between PTT line and GND and not in series with the microphone. The microphone is connected between GND and Mic input. On

I gave several calls.? I'll come back in about an hour and try again.?? Dan, W2DLC

I'm calling CQ right now on 7.277MHZ.? I don't hear anyone else. Dan, W2DLC