开云体育

Hi Michael I am writing to you off-list. 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl [email protected]> wrote:

Hi Hans Thank you for your quick reply. The idea of using two bottoms would be doable, but I suppose I would need to purchase two QMX enclosures, on order not to leave you with two front parts? The

BaMaKey paddles are very high quality and reasonably priced. 73

Hello Michael There is no source for a raw enclosure; they are custom-made for QRP Labs according to our specifications, by a factory in China. I think about the best you could do would be to use two

Phill, The two winding scenarios you describe produce identical end products. Set side by side, you could not tell the difference between them. Overthinking? Umm, probably

Hi @Hans I would like to make a Z-match antenna tuner for the QMX. Is it possible to buy a "raw" matching enclosure (no print and no holes) or could you point to your source. Thank you /Michael

Thank you, Gentlemen. I'm still not clear but that says a lot more about my failings than your explanations. If I lay the binocular flat on the bench with the holes pointing towards me it seems there

Is there anyone in the UK who can fix non functioning QMXs?

Probably. Some people here noted that the SWR of a dummy load increases a little towards the top end of the frequency range of the 20-10m QMX. The cause is coupling between the transformer windings.

So, the takeaway here seems to be that using insulated hookup (stranded?) wire is actually better than using the supplied 0.6 mm enameled wire for the T507 transformer secondary. Is that correct?

Hi Jay Thanks for the nice feedback on that one. Slightly embarrassed to admit that I did not find the reason for the freezing display. I was able to observe it too on 018. I spent a lot of time

Other than all that has been suggested, you might also consider http://www.catlog.net/_Albertkeys/Portables.asp No interest whatsoever in that business nor have I tried? the portable models, just a

There is no guarantee that the? Qmx architectures is compatible with the higher? power generated? within the Qmx .? ?The Tx? Rx? system is based around? supplying about? 22? V? ? sqrt (

Hi John, "...until I decide I want a better one..." When that happens, you might consider the Begali Simplex http://www.i2rtf.com/simplex.html CU 73 Tom

The connector is soldered using SMT methods just like other SMT parts. The Raspberry Pi 5 switched to using SMT methods to solder through hole parts and the outcome is mostly similar to this, which

Good thought. 73, Cliff, AE5ZA

I completed my QMX applied power, and connected a USB-C cable to the QMX so that I could install the FW. I was not seeing anything on the screen so I checked the contrast pot. It was fully CCW. I

Cliff, After removing the ADC chip, check your voltages. If they are still unstable, you should find the cause before replacing the chip. -- 73, Dan? NM3A

Steve, I think that when you wind the separate halves of a binocular core the only way to get the winding backwards is to cross the two ends of the wire over to the opposite hole farthest from the

meant 9v wall transformer