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John One way is seeing which final audio amp you have. It should be near where audio jack is wired. V3 uses an IC. V4 uses discrete transistors. If you obtained yours in the last 4 or 5 months,

the pcb with discrete audio amplifier is Ver.4 and the one with TDA2822 is ver:3

How does one determine the version number of the uBitx hardware? I see the SW version flash by on the screen during powerup. Thanks John K5MO

I just got the ubitx and wired it up. I was able to use a signal generator to hear a signal on 7.150MHZ that sounded good.? But listening to a station that sounded good on my regular radio I could

I am told, Evan, that the blink.ino can cut short the original program even if present there. so people feel that the arduino and its saved eeprom memory values are erased. . I would suggest as

I have a blue and white case from amateurradiokits.in for sale. Case is assembled with speaker etc. Included is a nextion 2.8 enhanced screen.? Make offer

If anyone is interested I have a blue and white case from amateurradiokits.in and a nextion 2.8 enhanced for sale.? Make offer.

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MVS Sarma, By vacate the eeprom contents using some ino I assume you mean to use the Arduino development software to load a file like "blink.ino", as opposed to the .hex files using Xloader. Then to

I take that back on the resistor. It is installed. It came preinstalled on the board I got with my case from amateurradiokits.in

uniflite58 11:02am?#62533??( /g/BITX20/message/62533 ) , Please try to vacate the eeprom contents using some ino and then load stock version and let us see .

Uniflite58, The resistor is needed even if you do not plan on CW.? The uBitx can get into CW transmit mode without the resistor.? Per the instruction from HF Signals be sure to install the 4.7k

I should add that I did accidentally load the firmware for the s meter version first. I quickly noticed this was wrong and loaded the correct version.

Thanks everybody for the help. Give me something more to try. ? ED Stay tuned

Thanks Evan,? The lcd is and was at full brightness. I did not have the cw resistor in place as I didn't plan on using that mode.. The rig worked fine before the upgrade. I installed the nextion then

To follow up on this, there is a calibration file on this group for the CEC firmware that will get you real darn close. I used it on my board and its close enough to work FT8 with. data only phone, no

It worked perfectly.

How well was your radio working before you added the nextion?

I would start with verifying that the dimming function is at full lcd bright. There is a known issue with the chopping circuit on the lcd display causing audio issues. The issue that I ran into in the

I upgraded to a nextion 2.8 last night and its up and running properly. However, all I can hear now is a constant high pitched tone and loud squeaky scratchy sounds when tuning. Volume pot has no