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Re: [TenTec] S-meter and RF Gain

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] S-meter and RF Gain
From: "Toby Pennington" <toby423@earthlink.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 9 Feb 2006 13:41:09 -0500
List-post: <mailto:tentec@contesting.com>
Bill,  I have seen these comments or arguments before about the RF gain and
s meter,  and I never had any problems setting the RF gain or threshold,  In
fact I use an old version of the firmware 1.367 where I have to use the
threshold  and RF gain seperately.  I use this version because the sweep is
very real time and the firmware  seems to be stable for me.

However,  with the RF gain reduction increasing the s meter in 2.0 and O2,
I have to increase the RF gain to give a s meter reading.
With the 1.xxx versions the s meter is always active and real time and easy
to give a report.  A lot of this has to do with the way a person operates
his rig and his own preferences. I would prefer to have the s meter active
regardless of RF gain setting.

AS far as the antique receivers are concerned,  their day has passed and
maybe it is time for a change concerning this issue.

Toby   W4CAK

----- Original Message ----- 
From: "Bill Tippett" <btippett@alum.mit.edu>
To: <tentec@contesting.com>
Sent: Thursday, February 09, 2006 12:48 PM
Subject: [TenTec] S-meter and RF Gain

> W4CAK:
>  >Alas,  both the O2 and the 2.0 firmware for the old Orion have the s
> working like it does in the foreign imports.  The lower the RF gain the
> higher the s meter will be stuck.
>  >Change is inevitable,  but don't like this one.
>          Toby, you mean you don't like Collins,Hammarlund,
> Hallicrafters, Drake, etc?  It's
> how S-meters and RF Gain controls have worked
> for at least 60 years!  This wasn't invented
> by "foreign imports", it's simply the result
> of how the S-meter interacted with RF Gain
> in analog rigs.
>          The "change" was when Ten-Tec decoupled
> the two in Orion.  I feel this will make it
> much easier for people to set RF Gain correctly
> (the same ones who now complain about Orion
> being "noisy" because they don't know how to
> set RF Gain properly).  Instead of setting Gain
> by ear, now they can set it by simply adjusting
> the S-meter deflection to be slightly above
> noise peaks.  What could be simpler?
>          Actually Sinisa YT1NT first suggested
> this in his March 2004 white paper when so
> many folks could not figure out how to set
> AGC Threshold correctly.  I think this is
> actually a good move making Orion much easier
> to use.
>                                          73,  Bill  W4ZV
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