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Hi Dan, That's interesting. I have a mini J38 key plugged into mine. I wonder if leaving it connected to the Windows tablet PC is partially to blame? Or are there buffers which get loaded up when left

Very helpful! This is great information. I have a bunch of components in route and I think I should have everything to implement your recommendations, and maybe a bit more. Still trying to wrap my

Thanks Ludwig, I have done the jumper thing and was able to see QMX in my file manager. On entering it I now see the EEPROM file as well as 1_00-27.QMX. So all appears well and what's expected. But

That's not bad,? but I did a bit better. I placed my order was on Tuesday afternoon, package was at the front door in Canberra, Australia, on Monday afternoon of the next week. 6 days. Excellent

Barb, After I have incorporated your latest suggestions - PCB looks like this. Battery interconnections are 5mm thick (and short). For the connection between -U4 and +U5, since I had an opportunity of

Excellent! From that display, the processor is working properly. Let us know how the receiver check goes. Next step might be running the diagonstics?through a USB cable to a host computer as

Two interesting links: https://www.gqrp.com/harmonic_filters.pdf and https://www.arrl.org/files/file/Technology/tis/info/pdf/8809017.pdf 73 - Pierre - FK8IH

For the past two days I have been on the air as VA3DUA on a beautiful Canadian weather (2C/34F) from Toronto. QMX+ and ABS v1.1-beta (ATU Board v1.1, Companion Board v1.2). ATU tunes as expected,

Gus, Thank you for your inquiry. Attached please find the summary of my modifications. I hope it is not overwhelming. This is the information I have been sending to those people who inquired to me

Yes Please use Copy and paste for the firmware.

Thanks for the suggestions. This is my progress: I identified that 2nd pin on the left rotary encode was not making contact so soldered in a lead offset. 1. Inserted a 200 mA fuse in line with the

For future reference, you can look Jeff's email up on QRZ (W1NC). Groups.io seems to eat emails/urls sometimes.

3 LPFs 40,30 - 20,17,15 - 12,11,10 4 BPFs 40 - 30,20 - 17,15- 12,11,10 with 2 toroids (like the mid version (60-15) use the LCs (calculations) from QMX+ be careful, you can only use T30s size toroids

Thanks Jerry and you know what ?...? it did pass the smoke test :-) Been on for over an hour at 12v / 0,02amp (started at 7v and slowly up to 12v) Will have to see if I can get a wire out the window

Sameer, You can reach Jeff at jeffreymoore@.... Bob, K2OID

Sorry for the confusion Stan. I'm still in the build phase. I don't think I put too much heat in to it, soldering. Just one of those things! Luckily I had a spare so clipped the old bits out and

Jerry, you will have to be a bit more descriptive. Which radio model do you have - QRP labs sells several (QMX? QMX+?, QDX?). Did you get it pre-assembled, or did you assemble the kit? How do you know

I burnt my Tx part of QDX due to high voltage and I have tried replacing parts myself to no avail. how do I get in touch with Jeff Moore Tnx -- 73s, AA6ST Sameer

Careful, if that went pop, you likely have a short somewhere.? It should only get small current in receive from the Vcc (5V), or 30mA in transmit from the tx bias current.? Maybe you have a 12V

Hello. I heartily endorse both of these commendations for Jeff's kindness and service to us individually and also to the amateur radio community. It's nice to know that if/when we run into the