[TenTec] Omni D and RF preamp on SSB

[Tommy Alderman]

Generally, what I do is vary the rcvr RF gain so the S-mtr just breaks
S-1 or S-2 and leave it at that level. In most cases, this will give you
max rcvr gain with the least band noise. You have to typically adjust
this just about every time you change filter bandwidth, mainly due to
the different insertion loss of each filter. Each radio is slightly
different, so there are no RF gain position numbers that are 'standard',
so you customize it for your own radio.

Tom - W4BQF

-----Original Message-----
From: tentec-bounces at contesting.com
[mailto:tentec-bounces at contesting.com] On Behalf Of Byron J Watts
Sent: Saturday, April 09, 2005 9:31 PM
To: tentec at contesting.com
Subject: [TenTec] Omni D and RF preamp on SSB

What is the optimum level (preferably an s-meter reference because i'm 
stupid and i don't know what else to use)  of RF into an Omni-D for best

signal to noise ratio.  When i cut this preamp in on an S-0 noise level,

i can usually bring the noise up to S5 or S7 with the gain wound all the

way up.  If there's a signal in the noise that i can hear but can't 
copy, how much do i bring it up to put the reciever in the middle of 
it's best dynamic range or sig/noise ratio (all SSB voice).  Once i do 
that i can start filtering, using the radio's built in filters and an 
external timewave audio DSP box.. sometimes it works for filtering noise

sometimes it doesn't. 

Is there a magic number for this radio or is it 'whatever works best' 
which is the answer i expect to get


Thanks, 73 de KC0NPF

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