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Hello, on behalf of the AGCW I hereby invite you to participate in this year's QRP contest. The contest will take place on Saturday, 09.03.2024 from 14:00 to 20:00 UTC on the bands 80/40/20/15/10

Well, no, that was someone else's suggestion...which means it's probably right. I don't know my butt from my elbow on the circuitry, I just followed the instructions on assembling. Good luck sir!

Thank you very much for the help, I had 6w on 20,17e 15 mt and 5w on 12,11 and 10 mt, I tried to transmit with the qmx connected to an ammeter to measure the absorption, in TX it absorbs 190 mA and RX

Good luck Bill! Let us know how it goes, please. I've been putting out 3.5w on 20m and 5.5w everywhere else for 5 months or so of regular operation, so seeing 0.2w really bummed me out ?.

I think we have different root issues, Giuseppe...I do still have RF coming out, it's just a tiny fraction of what it was. If you're running a windows OS, go to Start button, Run Program, and type

My QMX is reading <.5w on all channels in the Putty diagnostic.? I have a QRP power meter that outputs to my DVM and that showed the QMX at almost 4w on 20m!? Below is the schematic for the QRP

good morning everyone, a similar problem happened to me with the high band qmx, after 10 hours of transmission and in wspr 10 mt, it went from 5W to 0w, the RF no longer comes out, I replaced the

Yes, I can. I'll do that Sunday or Monday morning and post the results here (at work today, usher in a wedding tomorrow morning). The diagnostics on Putty were showing 0.2 watts, and the Kenwood

OK. How are you measuring output power? Can you measure current drawn from the power supply while transmitting? [email protected]> wrote:

Receive looks okay. Waterfall was showing incoming FT8 signals. I'll check anyway, thanks!

Hi, I made my mono a dual band QMX-M: 12m and 10m. I have set my QMX-M for High bands instead for Mono band so I got settings for all 5 bands from 20m to 10m in the setup menu. I suppose you could do

Mordan42, Hans sells BS170s in his component area: https://shop.qrp-labs.com/components/Transistors Those would be the same as the ones supplied with the kit. 73 Evan AC9TU

I've assembled and tested the LPF kit from 160m to 6m. All the filters work as expected without adjustment except 6m. The 6m filter starts to roll off very early and has a high loss in the 6m band

Hello Nate The firmware doesn't have defaults set up yet for all those other bands. So you would need to set up the band you want, manually, in the terminal. 73 Hans

Hans ,? Jonathan says? -? "I am not even sure if a single resonant band pass filter is the best option for my use.." This has some ambiguity? - does it mean a single resonant cct, one per band. ?

Mordan42, How is it doing on receive? Check C510 and C526 to see if they are damaged. If either have cracked or have been overstressed by high RF current, output power will be very low. JZ KJ4A

Digikey has BS170s in stock for 0.59 each. ? By 10 and then you will have spares. -- 73, Bernie, VE3FWF

"Cope with" and "make accurate measurements with" are different things. 73, Don N2VGU

Congrats on successful surgery! I second the suggestion to add an L14 diode to protect against a possible failure mode that sounds consistent with what you described. Other than the L14 voltage, I

Hello all! I have a QMX rev. 1 low band that has faithfully served me on 19 POTA activations, almost 1,000 QSOs and, recently, I was successfully using for my first 4 JS8Call contacts. After using it