[TenTec] OMNI VI+ audio

[Rob Atkinson, K5UJ]

Hi,

I don't know what the percentage is.  Thanks to N1EU for clarification on 
the Omni VI+ rx bandwidth.  I either never knew or had forgotten that, and I 
assume it applies to the Omni VI option 3 also.  Don't know about the VI and 
VI/1 and 2.

Firstly, my 6 KHz rx bandwidth remark was not intended to imply that 
transmitting stations are that wide, although some can be.  That happens to 
be my rx bandwidth of preference but I narrow it if there are nearby 
stations.  When the band is quiet I can open it on rx to 12 KHz which, as a 
side benefit, allows me to keep informed of what's happening in the 
neighborhood without the benefit of a bandscope.  What passband selections 
there are depends on the rig.  So, in a relatively unoccupied area of a band 
with the preamp off it is a nice listening experience.  Not so nice under 
crowded condx and obviously not workable in a contest or pileup where 
enhanced audio would be  pointless anyway.  Those are the situations where 
the <= 2.7 filters come in.  And as you mentioned, if the tx station is 
running stock audio, the wider bandwidth doesn't do much.  Otherwise, I can 
get lows down to 20 Hz, and the top can go to 3.2+ KHz so you get a nice 
bass sound on the right speaker and brighter highs instead of being cut out. 
  I had a ham visit me not too long ago and we listened to such a station 
and his comment was that he felt as if he was listening to a FM broadcast 
station.  It is really amazing to get that quality on a SSB signal without 
the inefficiency of a carrier and second sideband.

73,

Rob/K5UJ

From: Carter Grabarczyk <k8vt at ameritech.net>
To: tentec at contesting.com
CC: k5uj at hotmail.com
Subject: Re: [TenTec] OMNI VI+ audio
Date: Mon, 12 Apr 2004 14:34:03 -0400

Rob Atkinson, K5UJ wrote:


>  Same with this--after a week or two of hearing all the high and low 
>frequencies in addition to the mid-range
>  you won't want to go back to < 2.8 KHz.

Rob,
I guess I'm missing something. It would seem to me that the vast majority of 
hams (90-95%) are going to be using standard SSB transmitters that use the 
"filter" method of SSB generation, which, needless to say, will be limited 
to around 2.8 kHz. Unless you are listening to the 5 or 10% (?) of hams that 
transmit "wideband" SSB, I am not sure what you are going to hear when you 
open your receiver up to 6 kHz other than a bunch of extra noise and QRM.   
???

73/Carter/K8VT

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