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Bill, I have attached a PDF of the K0IKR message with the scope traces. 73 Evan AC9TU

Hi Hans, I have just viewed you presentation you gave during the FDIM 2025 conference. Very nice. I feel sorry for you atan2 problem. I have written a short note on complex filters for IQ signals,

Hi Hans, I have just viewed you presentation you gave during the FDIM 2025 conference. Very nice. I feel sorry for you atan2 problem. I have written a short note on complex filters for IQ signals,

Just upgraded from pre-SSB version to 1_02_000 and now the QMX doesn't start again. - Only POP at headphones - No display - No serial port visible at computer - With new upgrade all HW tests worked

Roy, the scrape and then add flux and solder works fine and is simple. I had an old Radio Shack 110 v heated solder sucker that I removed the rubber bulb and plugged the sucker tip (so the whole end

I typically use the entire skein of wire (as supplied in the QRP Labs' kits) to wind a toroid. Then I cut off the wire about 3 cm from the last winding of the toroid in question. That way I only use

Measure twice, solder in circuit once. Sorry guys and gals, I couldn’t resist this early in the morning. I usually check each part before installing but lately have gotten a little lazy. Your

I have held this question in until now. I don’t even know the correct way to ask Google, but with all these different “improved” methods of generating SSB can the average ham (let alone the 80

just a quick and quite possibly ill-considered thought .. .. would it be possible and useful to have a sidetone frequency shift as the SWR changes?? E.g. the lower the frequency the better the

With the config CAT keying "Elecraft" its work fine. Many thanks Stan for your help. Andre F6APU.

Thank you Stan, that was very helpful and exactly what I was hoping for. I think I should be able to fit the Conductors in. Unfortunately, after checking everything in the package again carefully I

Hi guys, I recently installed the new fw 1_02_00 on my QMX+. However, after listening on various frequencies I noticed that there are very strong and unwanted signals at the beginning of the band. In

Hi guys, I recently installed the new fw 1_02_00 on my QMX+. However, after listening on various frequencies I noticed that there are very strong and unwanted signals at the beginning of the band. In

Yes, looks like it is not correct to use Nano VNA for impedance measurement for PA. Thank you! Is it possible to measure imaginary and real part of impedance for PA in some other way?

I am currently organizing a group buy for PCBs only: I want to build the kit and I am willing to order from jlcpcb. Including: ATU board + Battery board + Front panel (tht) + rear panel (no sma) You

This is because N1MM/Kenwood TS480 CAT implementation expects the RD00010; and RU00010; commands to be relative increments; on QMX they are implemented as absolute up/down offsets. And note you can

Did anyone out there notice that FlexRadio is now copying QRP Labs? Not really, but their latest product (the Aurora series, announced right around Hamvention and scheduled to ship in 4Q25) is using

To be clear, I don't remember if the backlight actually did come on, as I didn't want to keep it connected to power any longer than I had to to check what the usb behaviour was (Up to that point the

Hi Stan To #1, the DC plug isn't shorting, and the tab you mentioned isn't contacting the small transistor next to it To #2, resistance of PWR_ON and PWR_HOLD to all other pins in that connector: With

Current limiting can only do so much; a semiconductor can be destroyed WAY faster than a power supply can limit current; besides whatever energy is in the circuit or in the power supply's storage