Another option for adjustment of a tuner without transmitting is ND6T's "Polite Antenna Tuner" at http://www.nd6t.com/antenna/Polite%20Tuner.htm

Hi Ken, our little builder group in Barrie has been focusing on the uBitx and the amazing firmware from Ian KD8CEC http://www.hamskey.com/ . A number of us also have the Bitx40 which works very well w

I got my 2.8 inch Nextion from robotshop.ca https://www.robotshop.com/ca/en/28-nextion-hmi-lcd-touch-display.html they also have the 3.2 inch https://www.robotshop.com/ca/en/nextion-enhanced-32-hmi-to

Link to files can be found at http://www.hamskey.com/2018/07/ubitx-firmware-cec-version-1095beta.html#more

I would like to order one of each kit. AL VE3RRD

This may have been answered already. The mounting tab on the IRF510 is internally connected to the DRAIN which is the output of the transistor (connected to the output transformer). Therefore would it

#ubitx

There are two tiny metal "tabs" or fingers in the arduino-nano mini-USB socket that can get hooked into the plug when it is first inserted (has happened to two different Chinese made nanos in our club

I used a separate power switch, that way I can use a normal volume pot with 1/4 inch shaft if I wish. Also means that if pot gets noisy, I only have to replace with another audio pot. AL VE3RRD

#parts

I haven't changed the firmware in my uBITX yet, but from what I gather, if you are loading a sketch consisting of a single .ino file then it should be similar. But if you are using multiple .ino files

The instructions at https://www.dropbox.com/s/s327me4umdckcpc/Raduino_SW_install.pdf?dl=0 may help. AL

Some info that may help here https://groups.io/g/BITX20/topic/4554574 AL

Have ordered 3 BITX40's over the last couple of years and 2 uBITX transceivers in December - all via India Post. The wait isn't that long, got the BITX40's in about 3 weeks or so. The first uBITX that

#ubitx

Bitx40 firmware update instructions can be found at https://www.dropbox.com/s/s327me4umdckcpc/Raduino_SW_install.pdf?dl=0 AL VE3RRD

#bitx40

Both Q13 in the Bitx40 and Q90 in the uBitx are the first stage in the transmit chain. Both have the "issue" of remaining connected to the antenna port when the transceiver is in receive mode. In both

Have others tried the original uBitx audio AGC circuit? Looks like it would be simple to add on a small perf board with selectable FAST/SLOW front panel switch using different values for C70 / R71. AL

See the chart at https://github.com/amunters/bitx40/blob/master/hardware%20modification%20overview.PNG Looks like all you need is the FUNCTION button for USB operation. A larger heatsink may also be n

Is there an up to date uBITX schematic available that reflects what is being sold today? On checking the ubitxv3.pdf schematic and comparing it to the actual circuit board, there appears to be one or

Bitx40v3 sketch update instructions can be found at https://www.dropbox.com/s/s327me4umdckcpc/Raduino_SW_install.pdf?dl=0 This is for Allard PE1NWL's version of firmware. AL - VE3RRD

While waiting for my uBITX, I decided to try to come up with a way of mounting the main circuit board at the rear of a metal case so I could use the rear panel as a heatsink for the two IRF510's (with

Hi Peter, several of us in the Barrie WAX Group have our BITX40v3 on the air now. One mod that really helps is to use a 10 turn pot for tuning (the single turn that is included is just too touchy when