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*What it does:* use the LCD to display characters received on the CAT serial port and characters transmitted over the serial port. The RX data could appear on the top line and the TX data on the

Michigan QRP Club On May 19 I had another one of my CW practice sessions. I worked three stations. Conditions were OK. SSN=53, SFI=117, A=10, K=2.I used my Elecraft K3 at 100 watts and a 100 foot

And did you check voltages at G of BS170 (see the link in my first post)?

Robert, did you measure using an external power meter? If not maybe something is wrong around T507. Please check this document ( /g/QRPLabs/wiki/36857 ) from the QRP Labs Wiki. 73

Yannig, good idea. But the QMX delivers 3.3 V via 2.2 kOhm. To have 2.5 V for the IC the current must be not higher than 0.36 mA for the IC and the mic. Unfortunately the IC requires 2.3 ... 5 mA in

Please add my name to the v2 ATU list. ?My QMX+ is being shipped. Thanks. 73, Dale Hammer K9NN dalehammer@...

Hello, Has anybody tried this microphone preamp : https://www.analog.com/en/products/ssm2167.html Evaluation boards can be found for about 5€ looks good to me but I am no expert ! 73, Yannig - F4IUJ

Me too! Ordered a qmx+ kit at Dayton. Thanks Raj, N2RD ¡ª Sent from my mobile Rajiv Dewan rmdewan@...

Thats strange that you get 4w+ at 60m??? Reset factory defaults to erase calibration?

Ludwig, Thank you for your reply. Please note my amended post above. I ran Diagnostics in Putty and see the following RF Output: * 60m - 4.3W * 40m - 0.6W * 30m - 0.5W * 20m - 0.2W * 17m - 0.1W * 15m

Perhaps you could buy a quantity, get a small discount and share the shipping cost with other hams. 73, Don N2VGU

Revision to original post... I just checked again and I'm actually getting about 4W on 60m but then it drops to 350mW on 40, ~100mW on 20m, 75mW on 17m and 0mW on 15m. Help! 73, Robert VE7ZN

hey eric, I'd like to buy a fully assembled mic. please and thank you. Brett/K5BEZ K5bez1 (at) Gmail.com

Chris, G5CTH <chris.rowland@...> wrote: This is interesting. QDX has the same transistors in the PA, doesn't have envelope shaping by design, and typically doesn't routinely damage the

Robert, maybe this document ( /g/QRPLabs/wiki/37486 ) from the QRP Labs Wiki is helpful. 73 Ludwig

On my mid-band QMX ....I wasn't going to do it. I'd read several horror stories but then, as an "experimental amateur radio station operator" I couldn't help myself. The SSB calibration routine was a

Looks nice; well done! From the photo, have you also added a heatsink?

Jonas, for this you may use this document ( /g/QRPLabs/wiki/36879 ) from the QRP Labs Wiki. 73 Ludwig

You can find it also at Farnell. 73 de 9A7AM

Update: Managed to remove L101 by cranking up the temperature on the hot air station. I created a new L101 by putting 29 turns of magnetic wire on a FT37-43 core to get ~300uH as a temporary fix until