[Elecraft] K3: 160m SWR issue

[hb9ari]

Hi Brian,

Just an "idiot" question: are you using the K3 ATU?

73, Rudolf HB9ARI

Don Wilhelm wrote:
> 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?
>>   
>>
>>     
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