[Elecraft] Sudden jump in SWR when power above 80 watts

Ken wa8jxm at gmail.com
Sat Feb 18 18:00:47 EST 2012


No.   When I moved the balun inside, it went from a 30' length of coax to a 4' length.  No change in the SWR jump.

Likewise no difference in the jump when changing from a 4:1 to a 1:1 balun.

It's difficult to change the open wire feedline length:  If I shorten it, it won't reach the antenna, if I lengthen it, it performs poorly laying on the ground ;-)

I doubt that the 3' length of coax from the K3 to the Palstar makes a 2:1 SWR difference between the two tuners on 80m.  

Ken WA8JXM

On Feb 18, 2012, at 5:47 PM, Rick Bates wrote:

> I'll wager that if you change the length of the feedline or the coax from
> the balun, that you'll see different loads.  Which is pretty much what
> you're doing with the Palstar being external (adding more coax).



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