Wayne: My experience is very much like yours. I listened for quite a while
last night in a CW pile-up on 40 using different combinations of RF gain, AF
gain, pre-amp, attenuation and NR. About the only special situation I found
was when a single signal is very weak and in the noise, dropping the RF gain
until the noise drops a few dB makes the signal easier to copy.
Ron N6IE
www.N6IE.com
----- Original Message -----
From: "Wayne Whitman" <wwhitman@fastmail.fm>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, February 02, 2008 6:18 AM
Subject: Re: [TenTec] ORION II CW pile up readability
This has been an interesting discussion alright.
I have spent quite a bit of time experimenting with different settings
of af gain/rf gain/agc using an Orion II with latest firmware.
My observations have been that the difference in readability of a weak
cw dx station has for me been minimal by increasing af gain and riding
the rf gain regardless of agc settings.
It does not seem to alter the s/n ratio between the weak cw station and
the atmospheric noise much at all, if any.
Perhaps this is because I am using a vertical antenna that may be more
noise susceptible?
The difficulty I have with minimal agc and high af/low rf gain is that
as soon as the dx station signs, a very strong station calls and just
about blasts me across the room before I can get the rf gain down.
Advice please?
Tnx & 73,
Wayne
--
Wayne Whitman
Cell:270-282-3550
wwhitman@fastmail.fm
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