[Elecraft] [K3/100] Reduced power output on 6m

[Mike Rhodes]

...from the K3 manual:

Output Power K3/100: 0.1 W –100 W typ. Suggested max from 51-52 MHz, 85 
W; 52-54, 70 W.
K3/10 (or K3/100 with PA bypassed): 0.1 W –12 W, HF-10 m; 8 W max on 6 m.
XVTR OUT (KXV3 option): -10 to +1.8 dBm. K144XV: ~10 W, 144-148 MHz.
Note: Output can be set up to 110 W. However, IMD and spurious products are
specified at 100 W, the recommended max. If a KAT3 ATU is installed, actual
output will be slightly lower (typ. loss < 0.5 dB below 28 MHz, < 0.8 dB 
above).

Mike / W8DN

On 6/12/2016 6:35 PM, Sean Cavanaugh wrote:
> Hi,
>
> I was mucking around in the VHF contest this afternoon and noticed that my
> K3/100 isn't putting out the power it should be on 6m. With the power
> control set to 100W, I am getting a maximum of about 60W. It is able to
> deliver 100W on 160 through 10, this is only an issue on 6. I have verified
> the power output with an external power meter.
>
> I ran through the TX gain calibration and it worked fine. It'll do 50W no
> problem, it's only when it gets over 60W that the problem manifests.
>
> Any ideas where to start looking?
>
> Thanks,
> Sean - VA5LF
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w8dn at roadrunner.com
>