[Orion] Orion Threshold and RF Gain Settings

[N0KHQ at aol.com]

Please read below.
 
Email from Carl N4PY
The RF gain control on the  Orion with firmware 1.372 now reduces  AGC
> threshold first, then as the RF  gain is continued to be  lowered, actual
RF
> gain is reduced.  This has  the affect  of making the RF gain control work
> like most other radios.    The RF gain control will never make the AGC
> threshold setting go lower  than  the displayed AGC threshold.
>
> 73 and Happy  Holidays,
>
> Carl Moreschi  N4PY
> Franklinton,  NC
>
   Email to N4PY from N0KHQ:

> Happy Holidays Carl and thanks for the tutorial. I believe your  the first
> person to give a logical explanation and operation of the RF  gains in the
Orion.
>
> What I would like to know is the  procedure that one might go through to
set
> the "Prog AGC" and then to  set the "RF Gain".
>
> Right now, the way I'm doing it is: (Prog  AGC) set the threshold until the
> band noise just begins to silent on  each receiver. Then adjust the "RF
Gain"
> only when needed to further  to reduce band noise.
>
> Am I doing this right?
>
> I  have saved your email and will save your response to this email to be
>  emailed to other hams that I talk to concerning the proper  setup.
>
> It may be a good idea to post your repine on the Orion  and TT list.
>
>
> Thanks for the help.
>
> John /  N0KHQ
>
Email for N4PY to N0KHQ
 
With version 1.372, just leave AGC threshold always at 0.37 uv  (lowest
setting).  Adjust RF gain control for the point where background  noise just
starts to drop.  Because this is a front panel control, it is  easier and you
no longer need to mess with the threshold setting as long as  it is at
minimum.
 
 
Thanks Carl for your help.
 
John / N0KHQ