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Hi? all, this is not only a start up issue... if your GPS signal is not that stable? you might also notice a big problem keep the QCX? running connected to the OLG-1.?? I noticed some cases where

Hi Barry, I use a 2,5 mm mono socket for the 5V, and a 3,5 mm stereo socket for signals and ground, witch are quite easy to get and eliminate the risk to short the 5 V. See pictures on the F6DFZ

Hi Hans and all, When I use WSPR, before connecting the GPS, I set the menu 4.7 to Practice ON. Then I connect the GPS. Doing this , there is no bad luck to fry the PA, and at the end of the first

IMHO, One wired we don't have to bother much.Most of us have some sort of continuity checkers. Hence there should be no need to search for colored winding wires at one off Homebrew levels. Neither it

Hi Graham Way back in the mists of time, one of the Si5351A Synth kit http://qrp-labs.com/synth batches was polluted with 3rd overtone crystals instead of the 27MHz fundamental mode crystals. These

Can the electrolytic capacitor at C22 be substituted with a?non-electrolytic capacitor? Steve N9SZ

Thanks Guys, Its working now. Now to find an enclosure A 3D F09 t10 s18 Appreciate it! 73 de Seth - W8FG wrote:

For anyone in the UK, these guys are really good: https://www.scientificwire.com/index.html Colours are a bit limited, red, green and gold, but they do sell bifiliar wire in 2 colours too. No

Hi Seth Have you enabled the GPS in the Clock menu? See page 7 of the operating manual. You need to set the "GPS {Mode Baud}" parameter to "2 009,600". By default, GPS is not enabled. 73 Hans G0UPL

Hans, Alan, Thanks for your comments. Hans - yes I had done the PA instability mod and just checked it. I've measured p-p voltages with a scope at various points within the LPF with 15 second key

Thank you Hans! Your web page is very much appreciated. I'm pretty sure others will find it useful. One suggestion for an eventual rev6 for the relay board: Provide another set of jumpers so one can

Hi Jan, Yes, I? don't find BFO parameter in WSJT-X :( Other idea will be to use some other software to shift audio signal from QCX filter (~ 500-700Hz) to WSJT-X bandpass (1400 -1600Hz). Spectrum Lab

Hello Mike, Mine arrived today, the insulation is not enamel, so I rang them, it's NOT suitable for electronic usage, it's coated copper to take an anodized top colour, so no good for winding coils.

What do you see on the second line of the display for sat info, particularly the "F" number?

Users of Hans' U3s, si5351 synthesizer etc may find this interesting, particularly those who might be interested in disciplining these devices to GPSDO or other high precision reference having only a

key problem:?https://www.youtube.com/watch?v=ZIkhzYy2O3Q Hans, what do you think about this?

I am having a really dumb moment, or week, possibly year. I have built a QLG-1 and the Shack Clock kit. I appear to have them working but not together. The QLG-1 by LED indicators appears to be doing

Hi Euan Have you implemented the PA instability modification: http://qrp-labs.com/qcx/qcxmods.html#pa ? If not then please give it a try, this may cure your issue. 73 Hans G0UPL http://qrp-labs.com

Hi Al The behaviour is normal but annoying... I already have it on my wish-list for the firmware development. 73 Hans G0UPL http://qrp-labs.com

Still on the list, Jack, yes... 73 Hans G0UPL http://qrp-labs.com