[Elecraft] K3s noise figure spec

[Jim Miller]

The PR6-10 was the latest released preamp as an accessory for the K3 prior
to the K3s with its built in preamp. They are likely very similar.

Here's the manual for the preamp:

https://ftp.elecraft.com/PR/Manuals%20Downloads/PR6-10%20Owners%20Manual%20Rev%20A.pdf


NF is claimed to be 0.7db typical.

73 and stay safe

jim ab3cv

On Tue, Jun 30, 2020 at 7:34 PM Dave Sublette <k4to.dave at gmail.com> wrote:

> Does anybody KNOW what the noise figure is for the 50MHz preamp on the
> K3s?  It isn't listed in the specifications.
>
> I need to know in order to make system noise figure calculations.  My
> feedline is going to be long (low loss, but long) and I'm trying to
> determine if I will need a preamp mounted at the antenna.
>
> Thanks,
>
> Dave, K4TO
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