Re: [TenTec] OMNI VI 9MHZ filters

["Bob McGraw - K4TAX" <RMcGraw@Blomand.net>]

As I recall the PBT is for the 6.3 MHz IF and not the 9 MHz IF.  Be sure the 
gain jumper is in the HI position.  It's easy to miss the pin alignment.
I only used a 500 Hz filter in the N-2 position with a 1.8 KHz filter in the 
N-1 position in my Omni VI Plus.  Loved that combination and had 1.8 KHz, 
500 Hz and 250 Hz filters in the 6.3 MHz IF slots.
Might try swapping positions just to be sure that some "mods" haven't been 
done to accommodate the INRAD filters loss.
73
Bob K4TAX

----- Original Message ----- 
From: "J W Dub Thornton" <dub@oklahoma.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, October 24, 2007 8:25 AM
Subject: Re: [TenTec] OMNI VI 9MHZ filters


> Paul:
>
> As Clarke advised, pay very close attention to the adjustment of the PBT.
> A tiny bit off in this adjustment can make a big dif in the apparent
> attenuation
> of the 250hz filter.
>
> "73"  Dub
>
> At 12:09 AM 10/24/2007, you wrote:
> > I put in a 219 250 hz filter in the 9 mhz if slot. It replaced a 400 hz
> > Inrad filter. I find that it has quite a bit of attenuation (maybe 10db?).
> > But it does reduce the QRN a lot. This is on 80 & 160m.
> >
> > Do others find this or maybe I have a bad filter. And yes I have the 
> > jumper
> > in the high gain position. And boy does it narrow up the passband.
> >
> > I have not had time to see if this makes the difference in copying DX in 
> > the
> > noise or not.
> >
> > I think that I tried a 221 filter and did not like it for some reason, I
> > dont remember. Different center frequency?
> >
> > Any comments or suggestions?
> >
> > Thanks
> > 73 Paul K9OT
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> --
> J. W.  (Dub) Thornton  K5DUB
> Minco, OK.
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec