Topband: Portable Flag follow up (DX Engineering preamp noise figure update)

[Don Kirk]

I should have said the so the 4.5 dB noise figure is certainly not
unreasonable.

Sorry for the typo.
73,
Don (wd8dsb)

On Tue, Mar 9, 2021 at 6:20 PM Don Kirk <wd8dsb at gmail.com> wrote:

> A couple of weeks ago there were a lot of postings about my portable flag
> for radio direction finding (for tracking down RFI), and someone asked
> about the DX Engineering preamp that was designed for use with my portable
> flag and specifically what the noise figure was for this preamp.  Tim
> (K3LR) said DX Engineering would measure it, and today he reported it
> measured 4.5 dB.
>
> Tim mentioned that there were trade offs in the design such as low current
> draw and high gain, so the 4.5 dB noise figure is certainly unreasonable.
> It really is the only preamp I now use with my portable flag, and very
> pleased with how it works.
>
> Just FYI,
> Don (wd8dsb)
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