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? Juan Herrera HK6J Enviado desde mi iPhone I can speak to that. My last QSO was 37 years ago and I let my license lapse. Then, I discovered the QCX. Last Monday I took the FCC test to renew my

Radio after losing interest years ago . . . I can speak to that. My last QSO was 37 years ago and I let my license lapse. Then, I discovered the QCX. Last Monday I took the FCC test to renew my

It's good to hear you've found yours is working OK! I've just completed the "build the boxes" segment of the OCXO kit, and still trying hard not to file too much off the main PCB getting it to fit

All, I want to second everything that Brian has said, but I think there's more. With the customer service, the unmatched assembly manuals, the willingness of people all over the world to help others

Hi Bob, I have done another check today however i can not check the 3.3V at pin 2 of IC2 yet as i have not proceeded that far with IC2 in place. I did find the signal on 27Mhz at exactly on 26.998.00

IMD testing is quite difficult at the best of times, as there can be numerous traps.I suspect the SI5351 might produce quite a lot of artifacts when used? in dual generator mode. The two frequency

If you have a counter, ?check the two outputs on the SI. There are pins of the board for these outputs. That ?test will make troubleshooting easier -- 73, Bernie, VE3FWF

2.3V at the collector of Q3 might be about right considering the possible voltage drop across R8 ... but better to check that there is 3.3V at pin 2 of IC2 (the 3.3V OSC regulator). Keep in mind that

Hear! Hear! Sent: Friday, July 20, 2018 5:07 PM To: [email protected] Subject: [QRPLabs] Unmatched customer service I want to thank and congratulate QRP Labs for resolving a customer service quickly

I want to thank and congratulate QRP Labs for resolving a customer service quickly and thoroughly. In a world where customers seem to be getting ever more removed from providers, QRP Labs proves that

Super - thanks Hans 73

I wanted to see if I could lower the receive current of the QCX even more by replacing the 7805 regulator.? I had a switching regulator laying around from a previous project, as I usually buy a

I recently turned shaft extenders out of nylon,? using a small wood lathe. Worked really, really well. For those who prefer a low tech approach.? :)

I had to substitute a 5k linear in my 40m kit recently- works great!

I'm trying to learn how to measure receiver performance so I try to do a two tone IMD test Using the receiver module with audio processing from HDSDR Set audio level with strong single tone so 0dB is

Hi Sean You can use ordinary ceramics for those capacitors, NP0/C0G are not necessary. All the QRP Labs kits use NP0/C0G for the small value capacitors, 1nF and under. Ordinary ceramic capacitors are

Hi Luc Using a 0.1uF capacitor reduces the available receiver gain by 14dB. The QCX receiver already has a lot of gain, probably more than needed on the lower bands anyway, so it might not be a

If you have access to a 3D printer you can make you own pot extensions as per https://www.thingiverse.com/thing:2997736/files No need to change original pot. -- 73, Bernie, VE3FWF

I ordered a QCX 40m on June 24 Package was shipped July 6, received July 17. Spent 6 hours and 30 minutes assembling, and 45 minutes to setup and adjust. Worked first time, giving 3W at 12V, 5W at

On my first build when I first powered up I had a completely blank screen.? I had to examine all of my solder work and I discovered a few bridges/shorts/cold joints, whatever you want to call them.?