On Thu, Feb 23, 2012 at 12:21 AM, Martin Sole <firstname.lastname@example.org> wrote:
> I find the use of RF gain as an audio level control rather counter
> intuitive, but workable however it renders the Orion as a radio with
> essentially no S meter and ties up the multi knob that is used for
> everything else leaving the AF gain virtually unused.
> If this is really the best way to extract maximum weak signal performance
> from the Orion, and enough people do seem to think it does, then it also
> seems reasonable to look at a way to either reverse the controls, having
> AF control operate RF gain full time and change the soft key RF gain to AF
> gain and further, to remove the S meter from the loop that is affected by
> the RF gain control.
I think that's a brilliant suggestion - to reverse the AF and RF Gain
In terms of the s-meter, v1.373 managed to preserve full scale s-meter
action at reduced RF Gain. It's unfortunate that ability was lost later in
the firmware development cycle. I sorely miss it.
> Whilst I think I understand that the Orion RF gain is acting to reduce
> overload of the succeeding analog to digital conversion process there seems
> to be a difference between how Orion achieves this and how almost every
> other design does it, I've not heard mention of the need for this approach
> on other IF dsp radios.
The Elecraft K3 must be approached in an identical fashion.
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