[TenTec] Correction: Omni 6 LPF Board jumpers

[Dukes HiFi]

Thank you for the help. That was exactly what I needed.

It seems that TT changed the relays from SPST in the transition from the Omni 5 to the Omni 6 early models and found that they could short out the tuned circuits in unused bands to reduce impact of stray reactances.

The Omni 5 used SPST relays but even the early Omni 6 radios used SPDT relays, Ten Tec simply did not use the second set of poles in early Omni 6 radios. It seems they found some noticeable benefit in adding the feature to shorten out the unused tuned circuits since they had the extra poles in there anyway.

Now I know how to put this back to its correct operation.

Thank you very much!

I am sharing this with the group because I think your information might be helpful to others if they see this and are surprised by it.

Gary

W0DVN


> On Feb 26, 2017, at 7:47 AM, Dave Bowker <david.bowker at yahoo.com> wrote:
> 
> After looking at the dwg dates, it appears that is a later 563.  Dated 1964, whereas my manual is dated 1992.
> TT changed relays to SPST in 564 VI+ rigs.
> 
> The manual on the TT site shows the jumpers ... they are not shown in my 1963 manual!
> Show original message
> 
> 
> 
> https://www.tentec.com/?p=1254 <https://www.tentec.com/?p=1254>
> 
> Dave, K1FK
> Fort Kent, ME <https://www.tentec.com/?p=1254>
> 
>