[Elecraft] KLPA3A power transistor thermal stress concerns

[KD8RQE at aol.com]

The K3/100 switches to the KPA3A at 12 watts.  So is there a 2w range  
(10-12w) where the KLPA3A is putting out unacceptable IMD?  Is there a way  to 
make the switch at 10w, or should we just avoid that 2w "danger zone"?
 
73
 
Mike KD8RQE
 
 
In a message dated 10/24/2017 10:56:38 A.M. Eastern Daylight Time,  
wes_n7ws at triconet.org writes:

The  K3/10 will output 12W.

That said, based on IMD measurements I have  performed I would NEVER run a 
K3/10 
at 12W out.  Frankly, with my K3S  with the latest rev KLPA3A to keep 3rd 
order 
IMD below 30 dBc, I would  throttle it back even more above 18 MHz.

Wes  N7WS


On  10/24/2017 6:27 AM, Rose wrote:
> Nick,
>
> What is the "12  watt" version you're referring to?
>
> 73
>
>  K0PP

______________________________________________________________
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  kd8rqe at aol.com