K3 5143 ERR TXG on 10m & 6m?

[Ross Primrose]

I've suddenly started getting a ERR TXG on 10m & 6m on my 10w K3 (SN
5143). Trying to perform the 5W TX calibration fails when if gets to
10m. Ideas?

Thanks, and 73, Ross N4RP

--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.”

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[ct1bxt]

Hello Ross,

I had the same problem, witch is partial solved.
On my s/n #6552 the problem start with some suddenly loss of power on 10  and also on 6 meter.
After some days, he fails completely the calibration.
The problem was one of the resistors on the LPA ( R-15, 2,7ohm 1/2 watt) that change value to a bigger one.
The problem is solved for the low bands, but, on the high bands still have random fails.
I have ordered new FET´s in order to replace the driver and maybe, the finals of the LPA (RD06HHF1 and RD15HVF1).
I have intention to replace the RD06HHF1 for a RD06HVF1 as this one works better on the 50 mhz region.

sorry for my bad English, but is not my native language.

73
Rodrigo
ct1bxt

[ct1bxt]

Hello,

Problem solved. New RD06HVF1 instead of RD06HHF1 and the output is stable.

Regards
Rodrigo
ct1bxt