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My homebrew ubitx project is based on the v2 design (so it's very similar around the audio stages except for a couple of added components to enable a "one wire" electret mic hookup). I tried using a

John, is this a BitX40 or a ubitx? If Bitx40, which software version is installed (version number shown on the LCD at power on)? If it's still the original v1.01 software, upgrading to the latest

Bill, I've finally had a chance to get on my laptop. For the 20x4 display, these are the relevant files from the CEC v1.2 binaries. UBITXV5_CEC_Vxxxxx_20P.hex : 20x04 Parallel

Thanks David and Dexter for your good effort and time. Unfortunately nothing seems to work and I do not understand why the good souls at HFSignals do not fix this since it seem to be a well know

Download the v1.2 binaries and read the document on file naming conventions to find the 20x4 file you need to flash.

Farhan, I just re read the limited instructions on the Antuino and it only addresses the “return loss” calibration. You left out a sentence about the “frequency calibration”. No where does

BTW, it's the v5 board

Hi all, I have a uBitx transceiver kit with the gray Amateur Radio Kits case. This was just purchased a couple weeks ago. I just have too many projects and too much travel going on right now to build

Known problem since Bitx40. The Arduino takes? more current to make its change, creating a current spike on the power rail. The cure is to absorb some of the power drop in the Raduino's 5V regulator

Try using an RC filter for the power line to the raduino. I did it with 2 of mine, worked solid on one and the other it toned it down for sure. -- David N8DAH Kit-Projects.com (

HI Ashhar, I was able to get reasonable SWR values after calibrating the frequency using an ancient but apparently still fairly accurate Fluke frequency counter (hamfest find a few years back.)? I

There should be one for enhanced if you search "Ted"

Thank you all.. Looks like I need to compile/download CEC v1.20 .. does it default to 20x4 screen as in v1.072? I have not found a manual after v1.072 Is I2C a different screen or different way to

What would be the chance I could coax you in doing the same for Nextion 3.5 enhanced. Thanks for giving this your consideration and if so I can order another good 3.5 as the cheap chinese clone only

Wow. Does it do same thing when on ssb? What about on different bands? Just want to make sure its not rf going somewhere. Did you restore the relay with a tap? Curt

Ok, so I added the BCI today and it works great. All AM is gone, and I was able to make my first contact. Now onto ?to the AGC to verify that it will work OK before the BCI. One question. All the

you need to load the appropriate hex file? from the repository - there is a specific set for 20x4 - either parallel or I2C

Is it a pop or a click? whatever it is it sounds like an AK45, VERY loud. :( It pops (clicks) every time you tune a frequency and a digit changes in the display. Apparently my software Version is V5

I’d say use whatever method solves your problem. There is a benefit in making sure grounds from connectors are touching the metal case and why not have all the case pieces bonded, it just helps all

Re Faraday cage. I live in a steel sided and roofed house the panels are not bonded together but yet no cell phone service inside. That was not my question. When I first got a radio going had rf on