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This deserves a better answer than I can give. The twisted pairs are using 1 wire from the input winding and 1 wire from the output winding, not the more obvious 2 twisted wires on the input winding

It's thoroughly explained in the assembly instructions. Yes, I got the part that it works better for more power out in the higher bands. I would have stood on my head whilst winding if the

It's thoroughly explained in the assembly instructions. Al

For the same reason we use coax to feed our antenna, instead of just running a piece of copper wire from transmitter to antenna. A twisted wire pair has a characteristic impedance, similar to

You are trying to increase the coupling.

Good morning Dan and thanks for replying to my post. ?Your message and instructions seem to make perfect sense to me but I’m in over my head here. I’ve messed something up on my computer, etc.

Why twist the wire in RWTST? What purpose does it serve? -- 73 Karl KI4ZUQ

Brent, Once you have downloaded the firmware, extract it and open the folder to find the firmware file. Then, plug in your QMX to the USB port of the computer. Depending on how you have your computer

Hans, Thank you. I have decided to postpone the build until February 1st. This should give the members of my Ham radio club, MRAC (Milwaukee Radio Amateurs' Club) time to place their orders for the

Petr, Im in. -- regards, Bryan, N0LUF

OR.... one of these ( https://www.amazon.com/gp/product/B07PDGG84B/ ) inline.? Works great for me. ref: https://www.amazon.com/gp/product/B07PDGG84B/ -- 72 de N4REE, Bob Easton - QRP CW forever

Hi Rob re: CW I'M 95% CW since highschool late 1950s 01% ?digial modes (at least once) 01% SSB Just replaced an IC-7300 with the FT-710 WHY? IMHO bigBIG bang for my buck best CW rig and features

Here's another update. As others have mentioned, I added a lot of heat and flux to the joints of T507, L502 and a lot of the LPFs. It cannot be overstated how much extra flux (even with rosin core

Paul, actually my encoder functions to turn the LCD on and off, I wasn’t holding it down long enough. With regards to the contrast pot adjustment, I’ve tried multiple times and nothing appears.

Hans, sorry, correction, I can also turn it off via the encoder. I wasn’t holding it down long enough.

Good morning Paul :) No, the backlight did not come on when I first turned it on, only after my abortive load attempt. ?Now I can turn the LCD on with the encoder switch but can’t turn it off

Hi Hans: Yes, I’ve slowly adjusted the LCD contrast pot up and down again this morning but nothing appears. ?After applying power I can turn it on by pressing the left encoder but the only way of

Yes, I have the 10w amp and a set of lpf's after it and have used it but found it more satisfying to see where less than a watt gets, have reached south pole and new Zealand from an attic dipole

I'm having fingers crossed that Hans has it all ready to drop on Christmas eve. As an everlasting Christmas present to entire qrp community.... ?

Thanks for replies here and off line, I'm sure power supply is solid, plan is to put the new build mcu into my good u3s to see if it's OK, if so the bad unit is then going to a friends where we can