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Very high, dangerous without a good load. For more investigation avoid sending and reduce supply voltage to around 7 V for short tests. Please connect a dummy load and go to Terminal - Hardware tests

Correction, when running SWR sweep on 20m QMX consumes 1.4A and SWR needle show a tiny signal when at maximum sensitivity Using HW Tests - Diagnostics, I see 0w output on all bands except 15 and 11m

No output from the QMX on antenna when sending. I connected a power meter direct to antenna conn. I hear the dit and dat in the speaker and can see what I sending on internal morse decoder in display.

Is there an output from the QMX stand allone or not? Without prducing rf no measurement of the SWR. Did you test the QMX without any connection to the PA? 73, Ludwig

Well, that was supposed to be I cannot thank you all enough!!! Sorry about that. I was so excited I got the radio going that I how to form sentences!! -- Wayne Greene

First Its been 55 years since I used to service them. They are narrow band for RX and TX so wide excursion for the crysts were not allowed without retuning the whole radio.. Also Neither side of the

Hello Wayne, maybe you made a connection from header pin 7 to pin 5 (the neighbor). Its like pressing the left encoder (Shut down). 73, Ludwig

I'm confused ;-) Congrats!

Hello Gary, this is fine. I guess, there is a short (not a dangrous) around the connection between the main board and the controls board or on the controls board. To switch on the QMX regular you have

Hi, I'm looking for tips to troubleshoot an issue with my QMX. Its a rev 1 board that I have build for high bands and it worked great for a while, I have logged 20 QSOs. To be more precise, I was fine

Well, a friend suggested that it might be a heat related issue. The QLG2 has been in my basement for a couple days, and that might explain why it came to life first thing this morning? So I tried a

Thank you both! I will try both ideas and see where it gets me. I will be away for a few days but will post results as soon as I give them a shot.

I believe, in Germany, Zoll is the catchall category for VAT and import duty (and excise duty, if applicable), since it's collected by Zoll at time of import (if it hasn't already been prepaid). There

Hi Tyler, I'd use 10-20pF to couple the Si5351A's signal in at pin 4.? You'll probably have to disconnect some of the other components and change the bias at pin 2.? See the other circuits in this

I’ve seen this a couple of times as well which is probably due to insufficient quality of the powerup reset. Make sure you apply power quickly to the QLG2 (e.g. using a toggle switch) or fast

Successfully made and wound the trifilar winding on T401 and confirmed continuity between A-A & B-B & C-C windings before and after soldering to the board. I can't figure out how to use the solder

I "built" a new QLG2 kit to use with my QMX, and the unit is acting strangely. On power-up (either 5vdc direct to the board or via USB), all three GPS LEDs will come on solid and stay on. Every once

I’m inclined to think a .1 uF old school (orange drop sprague) or similar, in series. Ground the Si5351 to chassis and try each side of the crystal socket and you should be ok. There may not be

Does anyone have a recommendation on the coupling cap value I should use? should I put it inline with the output to radio or ground to radio?

I am pleased to report QRP Labs equipment used during the solar eclipse from my station on the 30 meter band running WSPR with a QCX+ and a simple Slinky vertical. Paul Jorgenson, KE7HR, inspired me