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I have used https://www.treatstock.com/ several times. You can usually find someone there who will print using your preferred material and color for a fair price. 73, Mike KK7ER

Hello Greg 33J or K will make no difference; adjustment of the toroid turns is going to be a larger change anyway. 73 Hans

The grounding occurs on the devices that the cable plugs into.? Very common to ground shield to data ground on the connector.?? You can check my QRZ page for devices I've tested. Mike

Just checked half a dozen USB cables on the bench tangle Mini, micro, extender etc.? ?They were mostly showing continuity end to end on shield except one USB-C? but of course there are internal

Hi Greg, Thanks for adding your experience, I think my next move is to replace IC407 and IC503 to see if that fixes the issue.? I've been in touch with Jeff W1NC and he's been quite helpful. Does a

I do a lot of printing. I don’t mind taking a look and giving you a price. See my work here… Tufteln.com Joshua N5FY

Hello again, today my QMX went partly deaf again. I checked the bias voltage at R401/402 and it was just 0.5V. Grabbing Chipquik and an fresh 74BT3253 solved the issue within 15 minutes. This is now

Screw and wing nut are nice, if there is space. If not, a "pigtail" with a FEMALE banana jack, then plug your ground in this way. Ferrite chokes, of course. Frankly, I seemed to have solve the

Normal, yes. No official fix that I'm aware of.... I have the same thing in my Rev5 HB QDX. -Nate N8BTR

Hi , update to my update. The W2LI does work well for a “compromise” antenna. In testing, it sends and receives decently on 40, 30, 20, and 17 meters using 5 watts on WSPR. ?Good SWR on all 4

Good afternoon Hans, Any guidance on my previous question from yesterday about the 33pf C402 capacitor being marked as 33K as opposed to 330 or 33J as noted in the parts listing? It metered out on my

If you apply some background heat to the bord, like putting it on a hot plate or using? hair dryer or heat gun, it will make it easier to manage the rework. Don't worry about reflowing the other

Hi Hans I know the differences to revision 1 of the QMX+ main broad are not much, basically the power boards are now include in the main board, but still for coherence is it possible to get the

I have two Solomon soldering pencils that I use regularly, one has a very small chisel tip and the other has a much larger maybe 3/16 inch tip. The larger tip is what I need for BNC and other bigger

General points The ideal soldering process is fast heating of all the parts to be soldered and application of sufficient solder to the joint Few electronic components can survive 350C for long so

Hi, if this is in the situation when the PTT is activated it is possible that the T/R switching is not working correctly. -- 73 Bojan S53DZ

You’re going to have to be clearer about your set up if you’re saying an unpowered or powered 50WPA connected to the QMX+ makes it oscillate (in TX) when an antenna doesn’t the first thing to

Great idea but already booked for this year. I'll be in hospital for an op in October LOL!

Hi all L405a and L405b on QMX was an error in my documentation, it should be L401a and L401b. I have corrected it in the latest assembly manual I just uploaded now. 73 Hans

Hi All, I just finished the build of the PA, and after adjusting bias tested it connected to dummy load, driven by QMX+. The QMX goes into protection mode. Looking at the circuit with oscilloscope I