[Elecraft] K3 with 2m tvtr - power control feature request

[Harald Fritzsche]

Hello Graham, dear YLs and OMs,

There is adjustment resistor inside the internal Transverter. Here only you will be able to maintain right power setting. I did this one time for all my transverters. Max power is for me 2,5W. With power (pwr) knob, I can maintain 1 to 2.5 W.

Hope this helps

Vy73 
Harald
DD0VS 

Von meinem iPhone gesendet

> Am 06.07.2017 um 16:13 schrieb Graham Kimbell <g3tct at g3tct.co.uk>:
> 
> I have a K3 (old style) with internal 2m transverter that I want to use to drive a  microwave transverter.  There are a few issues with the output power -
> 
>   * the max output is supposed to be 10W, but measures 7W even after
>     calibration - seems wrong but I can cope with this
>   * the minimum power is 5W but should be down 10dB on the max, ie
>     0.7W.  This is a problem because I need about 1W to drive the
>     microwave tvtr.
>   * the XV config that allows setting the 28MHz input to the tvtr has
>     been checked and is exactly the 1mW (0dBm) default.  With the
>     power control set to minimum it measured -7dBm.
> 
> So it appears that the internal 2m xvtr has too much gain, and there does not appear to be any way to reduce the power output below 5W.  Is there any chance of making this possible?
> 
> I have a friend with a K3S with the same difficulty, so it seems to be a common feature.
> 
> Graham
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