[TenTec] RX-340 Programmable AGC

[Carl Moreschi]

Mark,

I concur on all your comments about the rx340 AGC.  I think the threshold
adjustment on the Orion was added because the Orion DSP gain has a wider
range, making this parameter necessary.  The rx340 has more of its gain
adjustment in its analog circuits.  Also, I don't see any reason for ever
adjusting ATTACK on the rx340 to anything other than as fast as you can make
it.  So it makes sense to drop this parameter from the Orion (and maybe even
from the rx340).

I ended up having to have separate AGC settings windows for my Orion/RX340
program for use when the rx340 is selected for this reason.

73,

Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: "Mark Erbaugh" <mark at microenh.com>
To: <tentec at contesting.com>
Sent: Tuesday, January 27, 2004 1:49 PM
Subject: [TenTec] RX-340 Programmable AGC


> Does anyone have experience with the programable AGC on the RX-340 (it had
> it before the Orion <g>).
>
> According to the manual (p. 4-7) the decay can be set between 0.01 and
99.99
> dB / second. On the page 5-9 (in the computer control section), the preset
> values for FAST, MED and SLOW AGC are listed. The decay for FAST is listed
> as 1200 dB / second. Does this mean that you can't set the programmable
AGC
> to the same value that FAST AGC uses, or is there a misprint?
>
> Also, it appears that the AGC scheme used in the RX340 is different from
> that in the Orion.  The RX340 uses Attack, Decay and Hang; while the Orion
> uses Hang, Decay and Threshold.  Any comments on the different schemes?
>
> Mark
>
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