[Elecraft] K3: 160m SWR issue

[Don Wilhelm]

Brian,

Is the higher reflected power indicated on the K3 or is it the reading 
on a meter in the line between the amp and the antenna?

If it is read on an external meter --
Is there any possibility that something is arcing over at high power - 
check your antenna system for that condition.

If the indication is on the K3, then the problem is in the input circuit 
for the amp (giving a non-50 ohm resistive load to the K3).

73,
Don W3FPR

Brian Machesney wrote:
> I'm feeding a "double L" antenna on 160m (visualize a vertical dipole with
> the top and bottom legs bent to form something like a capital "C" and fed in
> the middle of the vertical leg). The SWR bridge on the K3 shows 1:1 SWR, but
> when I fire up my Alpha 91B, I see significant reflected power.
>
> I recently saw a post on the topband reflector from another K3 owner whose
> 160m output power is being reduced from 100W to 50W by the K3 even though
> the SWR reads 1:1 on the K3's internal SWR bridge.
>
> Has anyone else seen this or have an explanation for it?
>   
>