As Jerry mentioned the unbalancing at the 2nd mixer is a valid option. I have performed his devised modification on both a V3 and a V5 and I get good consistent results and use this feature for reduci

Hello Mark, That is because the peak of the filter is in average about 5khz off the theoretical value. For example in one if my uBitx units it was 7Khz off when i measured it. 73, John

Further explanations I dug out on ubitx.net: https://ubitx.net/2018/04/01/use-the-45mhz-roofing-filter-for-an-rf-agc/ 73, John

Hello Ramon, In theory yes. I have implemented in my software an AGC extender as the MAX9814 I use as a receive AGC circuit only had 20dB of dynamic adjustment. The approximate 50dB of additional atte

Or change all five capacitors C217 to C221 to a higher value to reduce bandwidth or lower value to increase it. I note that these values were changed from 100pF in the V3 version to 68pF in the V5 and

Evan, Aaron, Since the unit is described as working and we know that 7.87V on the output of the regulator would mean death to the Raduino it must be the reference point of the measurement. Is it a coi

#ubitxv6 #ubitx-help #tx

You are right Evan I was thinking V5. Your comments are spot on. Aaron, please disregard and follow Evan questions about the 12v on the finals. 73, John

#ubitxv6 #ubitx-help #tx

Hello Aaron, I would check the following in order: 1. That both the red and brown wires of the power supply connector are connected to the positive of the power supply. To double check i would measure

#ubitxv6 #ubitx-help #tx

Hello John, There is a separate setting for the CW BFO in the settings. Scroll through the options after getting in setting mode, it is in the CW section if I remember well. I suspect yours is set too

Hello Terry, Assuming nothing else is connected to that blue wire then there is an issue with the Nano. I also assume no change to the software. Since changing the Nano requires reprogramming the new

Hello, I would disconnect the keying conditioner first. Maybe one of the FETs is gone or there is a short circuit in the keyer cable/plug. With no key connected you should have very close to +5v on th

Hi Rob, I use an electret, a low cost Baofeng style microphone with the capsule replaced by the one supplied with the uBitx kit and larger holes in front of the capsule. I use an SSM2167 speech compre

Hi Rob, Yes regarding the blend control that was what I had in mind. Regarding feeding 12V to the circuit and connecting the PTT via the diode it should work fine as the Arduino sketches I have seen u

Hello Rob, Replying to your first question: a mic output is generally in the 10s of mV. On top of my head I have 50mv as a typical mic input voltage for radios, so 100mv was king of a safe value for a

Hello Rob, I have the same situation and was looking at a simple solution too. Here are my thoughts based on your idea. Have a look at this page for examples: http://www.k7tty.com/development/electron

Hello Mike, Sorry to hear about your problems with the uBitx. If you are determined to part with it I am interested as I am looking for a case to house a bare V3 set. Email is my callsign at gmail dot

Hello Dean, I simply used the settings from the menu on the rig. First enable settings, then return to the menu and extra settings are available like for the ssb bfo adjustment. I set mine so that I c

#cw

Hello Dean, I noticed your post remained without replies. In the CEC software there is a separate setting for the VFO in CW mode. Go to settings and select Adjust CW VFO. Hope that helps. 73, John

#cw

Great idea Jim as the Teensy 4 opens up so much opportunities. A great rejuvenation project for my V3 board, now sitting idle (a V5 board took it's place in the rig). Awaiting your international shipp

#radiuno #ubitx

Hello Martin, Welcome to the world of conditional compile. Here are the lines in the ubitx.h file that you need for the stock standard V5 board (you can copy/paste to replace existing lines 25 to 35 w