what with all the fond philosophing and theorizing and debating about avc vs.agc ..behold a REAL circuit .. found this in an old magazine ... Modded it to look like this And included measurements ...s

I would like to change the menu sequence for the CEC Firmware v1.200. I am familiar with the basics of the Arduino software development platform but after trying several times find it is beyond what I

Just finished the wiring of a v4 uBitX and I am running KD8CEC v1.1 with a 2.8" Nextion screen. Everything seems to work (not happy with the low and slightly distorted audio, but will address that lat

I would like to know if the brown wire from Raduino should be grounded? Thanks Earl Ve1awc

Hi all! I have just connected a bc645 4 pin electret mic to my ubitx and am getting a 5 tx/rx "chatter" on transmit on a dummy load, when press ptt. When i release, all is fine, rx is lit and i hear r

uBitx is a bit difficult to *really* remote: its control and display are done by Arduino, but the unit supplied by default in the 'kit' has that as the 'Raduino", with the 'VFOs' part of that, being t

If you're good with C++, here's a good way to spend a rainy morning on a weekend if you know how to do this. I've done some graphic resizing, as have others, and yet I have not gotten into the nuts an

Well I was wrong about Zenith having the first AGC. It was RCA that sued Zenith over a similar AGC design (now ancient history). I had to read my old papers again. This is fun fact from the Antique Ra

I created a short unboxing video of the uBitx v5 and I put it on my maker blog at hamradiomaker.com

Hi All I’m designing my case and have a question. I plan on using 18650 batteries inside the case with this voltage regulator. Voltage regulator Then for charging I’ll have one of these inside the cas

Hello All, (sorry if this topic has been hashed to death elsewhere, if so I couldn't find it). As the subject says I'm a bit confused about how AGC, and specifically the ND6T version, works. There mus

It came to pass that, in the process of inserting a 7809 between the Raduino daugterboard and its B+ pin-to-mainboard, that I failed to notice a solder blob shorting out the 7809. I made a 90-degree h

I looked around but haven't found just how the "attenuator" function in the CEC firmware actually works. I'm curious because I'm interested in the mod that puts a digital attenuator between the pre-dr

The following observations may be of interest to others having just got round to completing my V5 build. 1) For safety I made use of the SMT reverse polarity protection circuit by KC9ON to simplify th

I would like a 100 W ubitx (maybe maxbitx) the would be ordered and assembled in stages. Kit 1...full coverage HOT receiver with good filtration....maybe even sdr based.(especially if one could use a

After a week working on this mod I need help as I can't come up with a logical explanation as to what is happening. My uBitx is a V3. It has a few mods and works well, good receive sensitivity, Tx pow

Popping finals and now nanos on my beater v3 board. Started with 13.8v in...then goofing with biasing. Why? I don't know. Curiosity and cause the trimmers didn't seem to be responding. Changed them ou

All: Although our site has been restored with new security software, some of you have expressed concern about the site. We understand this completely. On the other hand, many of you want to download t

Hello everyone,I'm Ray House, VE2OL, I have just completed assembling an Ubitx V5 with 3.5 in display. I am testing it with the original display and I find the VFO is out a lot, can someone point me t

hi! I've noticed on my ubitx4 that when you key down for the first CW tone (when it transitions RX->TX and transmits a tone) I get some pretty hefty harmonics out before it settles down. Subsequent CW