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Re: K2 QRP Version Max. Safe RF Output Power?

Posted by Geoffrey Mackenzie-Kennedy-2 on Sep 25, 2006; 12:36pm
URL: http://elecraft.85.s1.nabble.com/K2-QRP-Version-Max-Safe-RF-Output-Power-tp394062p394065.html

 Jeff  [hidden email]  wrote:

> Hi gang,
>
> Now that we're at the bottom of the solar cycle, I'd like to be able to
> run more than five watts on occasion, but not at the expense of putting my
> final PA at risk.  What is the highest level of RF output power that a K2,
> QRP version, can run on CW without putting the finals at risk?

<snip>

-------------------------------------------------------------------------------------

Hi Jeff,

To tail-end Don's reply to you about the hardware, a comment on the solar
cycle. True that we are at the bottom (my crystal ball suggests that the
bottom was reached last April), but 10m has been open frequently this year,
not only summertime Es but also long distance F2, and you don't need much
power to work DX on 10m. Frequently a 10m F layer long distance path will
open but 15m will be really "dead" at the time, and there is an explanation
for this behaviour. So if you find 15m to be "dead" it does not always
follow that 10m is "dead", and it is worthwhile to check 10m and. put out a
few 'CQ' with the K2 at low power. You might not be alone! On two days last
week for example I found 10m to be well open from here to South America for
about an hour each time, while 15m was not too good, almost "dead". There
could have been openings to other places when I was not in the shack.

Good hunting!

73,
Geoff
GM4ESD



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