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The uBiTx uses an Analog Input for the keyer circuit.? Since bypassing (shorting) the normal pull up resistor drops it out of TX, then either there is a low resistance value between the key jack tip

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

I built a ubitx V3 some time ago and no issues except CW keying. I built the CW keying conditioner from QRP Guys and installed it in the ubitx. Worked great and was pounding out text at about 20WPM

Again that's very helpful. Thanks for the tip on the software as well. Feel more co fident now so ordering now.Much 73Sent from my Samsung Galaxy A3 2016 - powered by Three

I would be careful with the 2.8” screen. The tft files that I found for the enhanced version were corrupt, and the source needs to be compiled on the LTS version of the Nextion editor. You get an

Sold.

Thanks dave. That's very useful think ihave room for the 2.8. theres so many different screens available though. Can you recommend one? 73

It brings a lot of menu items to the front panel. Can add noise. Have used 2.4, 2.8, 3.2 and 3.5", which was far and away better than the smaller ones. Make sure that there is enough room to fit it

Oop, I missed how you connected the two radios to eachother and transmitted between them -- ouch!? Remember, the receiver section is made to amplify microvolt level signals from the antenna, but the

It is a common phenomena on ubitx. Some steps to avoid this 1. Replace the mic+ PTT wire with shielded cable. Good quality usb cable can be use. 2. Keep some distance between ubitx and Linier power

Thanks a lot dear Evan. Now it is working.

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

thats great thankyou Evan

First of all I would like to say thank you for your help and reply it's really appreciated.? I really want to get my radio working! I really hope that I didn't fry anything.? During that test I was

I just have the antenna sitting on the floor.? I did not know that it grounded to the car.? Duh!? I'll go attach it to the car and see if there is any change. Unfortunately I'm not really sure how

I have not done a v3, however, the differences from a v4 are mostly in the audio, so yes you should be able to. Checked on Github: https://github.com/phdlee/ubitx/releases/tag/v1.20 There are v234

columbustalley@... Several ideas come to mind: "I've assembled two uBitx v5's and was able to send and receive messages on JS8Call by putting a wire directly between the two." Whoa! Did you read

Hi, How are you mounting the antenna?? It will need to sit on a large, flat, metal surface so the base can couple to it and provide the ground plane for the antenna (normally this is done by the car

can i fit a nextion display to a v3 ubitx ? 73 pete G4HAK

thought this might be useful have a ?ubitx v3 which was working great exept mic gain was v low. had a power mic DM510U handy so wired and connected it. put a 2mfd blocking cap in series with mic