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Damn. I'm on my phone right now and about to get on a flight so this will have to do - * Change value of D108 to 5V * Disconnect Anode of D108 from ground, instead connect to the base of an NPN

I have the same "Korad" supply *.* It's been going strong for several years now. The supply limits voltage across its output transistor by switching between several taps on its supply transformer

As far as assembly goes - Yes, it is a challenging build. It's by far the densest PCB I have ever populated. You will need to be extremely diligent about avoiding solder bridges. Keep solder wick

Billy, There is bias in the list.? People that have problems make noise those that succeed can't be bothered. So you see the disaster stories even if its a low percentage of the actual builds.. Do

As someone who is responsible for many of the negative messages - People who are having no trouble with their radio are out there making contacts with it rather than logging into a forum and talking

When operating the QMX, I noticed that with CW, the CAT control sets the SSB mode in the logbook and automatically enters 59 instead of 599 in the report. That's not good if you want to take part in a

Billy, Just as additional reassurance, I built mine carefully, following the assembly manual literally. Mine powered up and worked fine the first time. I love this radio. -- 73 Michael N6QP *Up in

I'll add that past the Q103/Q104 short, I directly contributed to the eventual failure of my QMX. When I fixed the short, the hot air gun dislodged a couple of other parts, leaving my QMX turning on,

Billy, stay brave... ... take your time and you will get it done... I am one of those who - read the manual twice - took my time to build - did it step by step and everything went well! No

Billy, as well as watching Hans' video, maybe look for the pinned comment that lists all the tips and what time they appear on the video. I plan to have this list handy when I start my build. 73,

Well, you had at least two VERY HAPPY builders reporting in the emails today ... don't be so negative !! Follow the instructions carefully and either use a ZM-2 or equivalent manual tuner to tune

who picks these oddball spinoff company names? imo, HP THREW AWAY their entire fabulous brand name and market confidence when they rebranded to 'Agilent' ...

Billy, You can do this!? Just be careful during assembly to 1) remove all the enamel from the toroid wires before soldering, 2) check the continuity between VCC, VDD, and +12 against ground prior to

Just one more comment on the excellent "52 tips for building your QMX successfully" youTube video: With regard to the BNC connector, if you test its output to ground, you will see a short even though

Hi Billy, my QMX worked just fine from the first power up.! There are still a few bugs that Hans will smooth out over the next firmware updates.? AGC, eratic volume control...to mention a few..?

This prototype can be used only on 6m! 6

Bob, Jim, et al, Further to the 8/6m prototypes I previously posted, I’ll now post the details of an 8m only prototype. Schematic Analysis Implementation BPF is 11t on an T50-6, squashed up so

Pacific Antenna also offers a "Mini SWR Indicator Kit" for $5. Works great. 73 Kees K5BCQ

Just take your time Billy.? I spent about an hour a night for nearly a week.? QMX #332 worked right off the bench with no problems. Go slow and double check everything as you go so there is no

Billy, my QMX worked properly from the moment I fired it up. 100% smoke free! Just some minor screen issue that was my fault, and I soon corrected. One of my friends, who ordered a QMX kit two or