[TenTec] Omni VI Plus audio

[VE1BN]

Hi Fraser -

You are right about the different audio in the T-T rigs.  The LSB on both my 
Paragon II and my OMNI 6+ is much warmer than when changed to USB.  There it 
is thinner and sharper, which am sure you have already noted.  It is the 
filter slope, I believe.  Your filter is not faulty.  I have tried three of 
them and the results are much the same.

See you do a bit SSB from your club.  Hope to see you on CW as well.

73 -  Don,  ve1bn at eastlink.ca


----- Original Message ----- 
From: "Fraser Robertson" <g4bjm at hotmail.com>
To: <ken.d.brown at hawaiiantel.net>; "Discussion of Ten-Tec Equipment" 
<tentec at contesting.com>
Sent: Monday, March 17, 2008 8:49 PM
Subject: Re: [TenTec] Omni VI Plus audio


>
> Our club's Omni6+ option3 sounds very different on USB and LSB, and it's 
> not possible to correct it by adjusting the BFO frequencies, so it must be 
> down to the filter being asymetrical.  I understood that was a common 
> failing, but perhaps our filter is faulty?
>
> 73 Fraser G4BJM
>> Date: Sun, 16 Mar 2008 18:37:51 -1000> From: ken.d.brown at hawaiiantel.net> 
>> To: tentec at contesting.com> Subject: Re: [TenTec] Omni VI Plus audio> > > 
>>  > Now I don't know why the higher bands are different on your rig.> > 
>> Wonder if you have an antenna problem? > >> > > If the SSB Receive (or 
>> transmit) audio sounds different on 10, 15, 20 > meters than it does on 
>> 40, 75 meters, you should be comparing the sound > on USB versus LSB. 
>> Your SSB audio characteristic should not change at > all due to changing 
>> bands, other than because of the convention of using > USB above 9 MHz 
>> and LSB below 9 MHz. The audio characteristics also > should not change 
>> very much from USB to LSB. If it does change, that is > an indication 
>> that your BFO frequencies are misaligned for one or both > SSB modes. 
>> Another possibility, although not nearly as likely, is a > partially 
>> failed crystal filter with a non-symmetrical passband shape. > The first 
>> thing to do is check the BFO frequencies. If you install new
>  > filters, of any brand, without getting the BFO frequencies right, you > 
> will still have a problem.> > DE N6KB> > 
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