[Elecraft] K3 - why SWR change with an amplifier

[Rick Bates]

Did you leave the K3 tuner online when bringing the amp online?

The K3 tuner should be OFF when using an amp.  Another DOH! moment?
:o)

Rick wa6nhc

-----Original Message-----
From: Jorge Diez CX6VM

Don

The amplifier is a Drake L7

I will test with a ALS1300 to see what happens

So what do you think? My L7 is doing something bad?

I really dont like to see more than 3 bars in my K3 SWR meter. I tune with
the internal tuner and is better, but I dont know if I had something bad
that I need to solve

Thanks
Jorge

-----Original Message-----
From: Don Wilhelm 

He did not say it was a KPA500!  Maybe it was some other amplifier that 
we cannot comment on.
If it were the KPA500, I would have asked "what bands".

On 3/29/2012 7:26 PM, ab2tc wrote:
> Hi,
>
> But is it normal for the KPA500 input SWR to be 2:1?
>
> Knut - AB2TC
>
> Don Wilhelm-4 wrote
>> Jorge,
>>
>> With the amplifier in standby, the K3 wattmeter sees the antenna SWR -
>> the same as when the antenna is connected to the K3.
>> When the amp is switched to operate, the K3 will see the input SWR of
>> the amplifier - and that has no relationship with the antenna.
>>
>> 73,
>> Don W3FPR