All: The voltage chart for the JackAl board is now posted on hamradiodesigns.com. The program source code will be available for download on Monday. Jack, W8TEE Al, AC8GY

Yeah Vic you want to calibrate the frequency display first. I didn't like using wwv for calibration of frequency. They have the intermittent carrier. I reloaded to a version 1.08 of kd8cec and tuned

Random cutting of traces is not "my" way of trouble finding ..tho at times I've been tempted ..Amps at Q12 and Q32 would both need to be well terminated as they would be terminated into the crystal

I had that pre-amp earlier in the receive line between K3 and K1 and what I noticed that amp vs the new pre-amp I put in at volume high is the pre-amp between K3 and K1 just sounded like it amplified

Actually I think with the pre-amp I might have had a loose connection and had to adjust the gain. It seems a lot better now. I actually got around 130mv p-p at vol high with 100uV into the antenna.

If you've got it working to your satisfaction, thats probably a good place to stop .. Jim

https://www.ebay.com/itm/90W-HF-Power-Amplifier-For-FT-817-IC-703-SUNSDR2-PRO-KX3-QRP-Ham-Radio/182056979298?hash=item2a63710b62:g:d~UAAOSwP~tW6cCQ:rk:13:pf:0 this vendor is top-cc* in Shanghai -

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20@groups.io group. File: uBitx4 voltages.xlsx Uploaded By:Rajendra Kumar G G

Ted, Just uploaded into files section RC RX/TX voltages without modulation. See files \ VU2ZAP folder. Power supply adjusted to 12.0V during RX and TX. Hope it helps! Cheers Raj

There is also an older format XLS file in the folder if required. https://groups.io/g/BITX20/files/VU2ZAP/uBitx4%20voltages.xls

Right, the module seems to be sold by many different sellers in asia. Dont expect to get documentation or service, they just sell it. The boards are named "XF-P100" and "XF-LPF-HF". I am not

Thank you Timothy. Heres a link : https://www.ebay.com/itm/Assembled-LPF-low-pass-filter-90W-SSB-CW-AM-RF-HF-power-amplifier-HAM-RADIO/121965988356?hash=item1c65bd4a04:g:2kgAAOSwFxBXHHYO:rk:3:pf:0

Reply : Some of the photos I have seen have marginal looking OPTs on them as in things that look like longitudinally split core coaxial cores. 2. THe fully assembled versions will have a heat sink

Got more options with an eBay search... https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=HF+Power+Amplifier+For+FT-817+IC-703+SUNSDR2+PRO+KX3+QRP+Ham+Radio&_sacat=0 Bob —

A consideration here is to wonder if any spurs, etc., get amplified with the amp. May need more LPF's to keep it within FCC specifications. Just a thought. Bob —

Playing more with the uBitX, currently “breadborded” (wired up with alligator clip jumpers) on the desk. I found that it is going into transmit during the calibration phase, and that appears to be

With the Raduino otherwise disconnected, can you plug its USB port into a USB line from your computer or a cell charger? That will power it up on 5v and you can see if it is displaying and acting

I was baffled by this too. All a bit strange. For uBitx V 4.3 calibration Here's what i did: Change band to 20m, attach a dummyload, or a decent antenna for 20m, with a low SWR. Use Your frequency

The heat dissipation on 24V really is high - i stick to 13.8V and 30W on the meter. The PA is still to be analyzed regarding spurs - this is going to be done in the near future.

Hello everyone, I've sent several messages in the past asking about why my uBitx clicks (relay) as if it's trying to transmit when I connect a mic to the jack. I've even sent some images of how I