[TenTec] Fair Market Price for Omni VI+ will allfilters&matching PS ?

[Bob McGraw - K4TAX]

Looking at my manual & notes:

On the cable to the PBF/Front End board, connector 86, bead with 1 turn at 
the board connector.

Same on the cable to connector 86 of the Xtal Osc/L.O. Mixer board.  Likely 
this cable was replaced by a shielded ribbon cable assembly.

On the cable to the Xtal Osc / L.O. Mixer board, connector 82 and 83, bead 
on each end of the cable with 1 turn at the board connector.

Add a bead on the cable at connector 92 and 93 on the Logic Board.

Add a 0.1 mf @ 10V tantalum cap on pin 26 to pin 7 of U20. This is 5V to 
ground at the IC.

Add a 0.1 mf 10V tantalum cap at pin 40 to pin 20 of U1, pin 24 to 16 of U7. 
This is 5V to ground at the IC.

There are several original IDC connectors and associated wiring harness that 
was replaced with shielded ribbon cable and connectors.  My notes do not 
describe exactly which ones.  As I stated before of the 6 or 7 radios I've 
owned and or modified for others, I do not recall the solution was exactly 
the same for every one.  I do recall that moving certain wiring harness 
assemblies does help in many instances.

Basically I tune 12M and 10M with a dummy load on the radio, RF Gain at max, 
making a note of the frequency and level of each birdie.  Note if there is a 
difference in USB and LSB as well if BPT makes any change.  Then moving the 
cables or adding the "test bead" will determine if that item has any effect. 
If not, move on to the next birdie.  If it changes, note same and move on. 
Once you get the "list" then you'll have a detail of what needs to be done 
and where.

Hope this helps.

73
Bob, K4TAX

----- Original Message ----- 
From: "Bry Carling" <bcarling at cfl.rr.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>; "Barry N1EU" 
<barry.n1eu at gmail.com>
Sent: Thursday, January 10, 2013 1:02 PM
Subject: Re: [TenTec] Fair Market Price for Omni VI+ will 
allfilters&matching PS ?


> The birdie mods especially...
>
> Barry N1EU <barry.n1eu at gmail.com> wrote:
>
>>On Thu, Jan 10, 2013 at 4:00 AM, Bob McGraw - K4TAX
>><RMcGraw at blomand.net>wrote:
>>
>>
>>> I had done extensive work to get rid of the multiple birdies on 12M
>>and
>>> 10M. I replaced the bypass caps on the PA board to improve the
>>stability of
>>> the stage.  Although the changes were strictly component changes,
>>selected
>>> to be better quality or better suited for the application, and the
>>added
>>> toroids to certain cables inside the box were applied to get rid of
>>> birdies.
>>
>>
>>Sounds like you certainly added some value to your Omni 6+, Bob.  Any
>>chance you documented those changes?  Many of us would be very
>>interested!
>>
>>Thanks & 73,
>>Barry N1EU
>>_______________________________________________
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>>TenTec at contesting.com
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>
> regards,
> Bry Carling
>
> -- 
> Sent from mobile phone.
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