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Alan, You might be correct. My understanding of the QLG1 battery backup is it only maintains the ephemeral data held in the GPS module to enable faster satellite lock on subsequent powerups. Now I’m

Kees, I was inaccurate in??my statement, sorry.? ?I have continuos signal of about 300mV on the dummy load in RX,??not a DC signal.??Unfortunately I have not a Scope with enough bandwidth to

Maybe continue using the converter, set to 12V or maybe even a tad lower, eg 11.9 - just in case.? Good luck & have FUN with your radio.

Tony, Yes it is different. I'm not sure but I thought the correction is normally set in firmware at the time of manufacture. Then any further adjustment is made when the full data is transmitted, once

The DSO-TC3 scope has a published bandwidth of 500 KHz. That is only good enough for accurate voltage readings up to 100-200 KHz. It won't work for HF frequencies. That might be part of the issue you

there is a TXCO and the referense is set to 25khz I'm using a osciloscope and when I press the key the voltage drops to half 5v->2,5 and gives a very distorted signal like having a vary modulation on

Alan, I think this might be attributed directly to the GPS module used on the QLG2. I haven’t noticed a large offset on the QLG1 but then, it has a battery backup holding known satellites whereas

Roberto, Current drain is normal. The later QDXs have different components that draw more current in RX mode. The manual has not been updated. Check C2, it may be leaky. 73 Alan G4ZFQ

Hello all, I have been repairing all qrp-lab equipment for the last few months very successfully. ?I own and can repair all that they produce. ?It generally takes me a day or two to turn something

FYI, my High Band QDX draws more current on Rx as well as on Tx than the Low Band QDX. Seems to work fine otherwise. 73, Cliff, AE5ZA

What are you using to detect the DC voltage (does it have any "detector diode" capability) and where are you measuring it ? 73 Kees K5BCQ

Testing inductors at the use frequency is always a good idea. Core material permeability can change (usually lower) at higher frequencies and invalidate results obtained with a fixed low frequency LC

Did you sell it?

For HF work I have not found this to be the case. I suspect it is accuracy of meters where the difference lies. I have a meter that measures at around 200KHz, it agrees to very careful measurements

Did you sell it?

Steve, The QLG2 does not load any offset to compensate for the difference in UTC and GPS time -18 seconds I think. Therefore it can take up to 12.5 minutes before accurate time is displayed. This is

The QMX 9 volt seemed to be fine on power up. I connected an antenna and there was very soft signals if any. I connected the same antenna to my? QCX+'s the signals were loud and clear on the same

I just finished my second QDX HighBand (the first collapsed after some days of good job) and I've made a couple contacts in 20 and 15m, but verified a little too high current drain in RX (>150mA) and,

Steve - I think, once you get the antenna in a good location, that it'll work fine. With mine it took a few minutes of being out of whack, but once it gets in sync with several satellites it'll be

I see the same thing on my QLG2 as well. Make sure you place the antenna well away from any interference sources such as running computers, monitors, etc, as they create substantial noise in the 1.5