[Elecraft] Low power out, ERR TXG when trying to calibrate power

[Don Wilhelm]

Rob,

I would try running the TX Gain Calibration with a higher voltage power 
source - at least 13.8 volts.

If it still fails, contact Elecraft support.

73,
Don W3FPR

On 4/18/2017 5:55 AM, M0VFC wrote:
> Hi folks,
> 
> My KX3 seems to have developed a low output power problem.
> 
> All used to be fine, but over the weekend I noticed it now only gives ~6W
> maximum on CW despite a good SWR indication. I have reproduced this into a
> dummy load (1.1:1 SWR) and checked DC input voltage (11.2V key down,
> external 3S LiPo).
> 
> Additionally, if I engage the ATU, it no longer seems able to find a good
> match, even into a dummy load. Bypassing the ATU results in an indicated
> 1.1:1 SWR, and removing the ATU module does not fix the low output power
> problem.
> 
> If I run the manual TX power calibration (set power to 6W and hold TUNE),
> the VFO B display reaches about 5.4W then stays there. Tapping TX to stop
> the procedure results in ERR TXG being shown. Doing the same at 4W results
> in maximum output power of about 3.2W, from memory, and a similar ERR TXG
> error.
> 
> This is true on all HF bands.
>