[Elecraft] K3 6m pre-amp

[Stewart Baker]

On Mon, 24 Mar 2008 07:05:53 -0700, Lyle Johnson wrote:
>> Haven't really had time to use my K3 on 50MHz, but when I tried 
it
>> the sensitivity seemed quite a bit down on my K2/KXV50
>> combination. Unfortunately I have sold the KXV50, so I can't do 
an
>> A/B comparison.
>>
>> Is this what the preamp is meant to address  ?
>>
> The 6m preamp, when available, is meant to help in those cases 
where a
> lower noise figure at the receiver input (or lower receiver 
temperature
> if you prefer to think of it that way) coupled with the required
> additional front end gain to provide that lower noise figure, 
would be
> expected to provide improved receive performance as determined 
by the
> station system design.
>
> Your 6m receiving system may or may not benefit from this.  It 
depends
> entirely on your station's design and where the K3 as a 
component fits
> into that design.
>
> 73,
>
> Lyle KK7P

QSL Lyle,
I think what it all goes to prove is what a good front end the 
XV50 (not KXV50 as in my previous) has.

The only problem I see here with having a pre-amp connected to the 
KXV3 is that I also use the RX ant input for a HF receive antenna.
I suspect that I would need to implement some external relay 
switching for that..

73
Stewart G3RXQ
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