Yes, one can move the oscillators for USB and LSB a bit further up the slope
into the passband and realize a bit more low end response for a bigger and
warmer sound. Careful however, carrier suppression will suffer several dB
and frequency readout errors will abound.
73
Bob, K4TAX
----- Original Message -----
From: "Barry Gross" <barry.n1eu@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, May 29, 2005 2:38 PM
Subject: Re: [TenTec] SSB recieve audio?
> pure conjecture on my part - only one of the two oscillators (either
> USB or LSB) should effect cw, and the effect would probably be to
> shift the cw offset/sidetone, but I don't honestly know. I no longer
> own the Omni VI, and don't even have access to the owner's manual.
>
> As I've said in the past, the Omni VI was not designed to deliver full
> fidelity ssb rx audio so folks probably shouldn't fiddle with it an
> attempt to get there. However, the detector is not the bandwith
> limiting factor - if the carrier oscillators are adjusted and passive
> components optimized, ultimately it's the notch filter and dsp ic's in
> the audio signal path that are throttling the fidelity. That's my
> story, and I'm stickin' to it. I did my homework a few years back -
> tapped the Omni VI product detector audio off U3-6 on the if/af board
> through a 1uF capacitor tack soldered to the pin, and brought the
> signal out in a shielded cable for external audio amplification and
> ended up with bandwith limited only by the xtal filter.
>
> 73,
> Barry N1EU
>
> On 5/29/05, Steve N4LQ <n4lq@iglou.com> wrote:
>> What's the side effects of doing that? Wouldn't that change the position
>> of
>> the carrier within the filter passband? What effect would that have on
>> cw?
>>
>> Steve Ellington
>> N4LQ@iglou.com
>> ----- Original Message -----
>> From: "Barry Gross" <barry.n1eu@gmail.com>
>> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
>> Sent: Sunday, May 29, 2005 12:59 PM
>> Subject: Re: [TenTec] SSB recieve audio?
>>
>>
>> > On 5/29/05, Steve N4LQ <n4lq@iglou.com> wrote:
>> >> Barry you lost me there. Alignment of what?
>> >>
>> >
>> > carrier oscillators
>> > _______________________________________________
>> > TenTec mailing list
>> > TenTec@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/tentec
>> >
>>
>>
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