[TenTec] In praise of older technology AM transmitwithTenTecrigs

[bcarling at cfl.rr.com]

I need to open up my OMNI 6 Plus and have a good look at a coupe of things:

1) The filter in the N-1 position is NOT at all good.  It dramatically INCREASES the 
QRM in a contest whether using SSB or CW. I am really curious to know what is in 
there.  Ther eis no N-2 filter. The only other filter I have is the normal 500 Hz one. It 
seems to work OK.

2) Scotch S-meter never reads above S7

Thoughts?

On 27 Feb 2014 at 7:31, Brian Carling wrote:

> Which model number INRAD filter do I want for 600 HZ roofing in my Omni VI Plus please ?
> Sorry for my ignorance but they list so many, and I want to be sure...
> 
> Of course, I could also put the money toward saving up for a nice OMNI VII !
> 
> Best regards - Bry Carling AF4K
> 
> 
> 
> > On Feb 26, 2014, at 4:22 PM, "Rick - DJ0IP / NJ0IP" <Rick at DJ0IP.de> wrote:
> > 
> > Let me put some meat behind my previous post:
> > 
> > Filter:.....TenTec....INRAD....INRAD
> > Filter:.....Stock.....600Hz....2400Hz
> > -------------------------------------
> > - 2 kHz.....79dB......94dB.....85.5dB
> > - 5 kHz.....82.5dB....97dB.....95.5dB
> > -10 kHz.....86.5dB....98dB.....96.5dB
> > -20 kHz.....95dB......97.5dB...97.5dB
> > 
> > As you see, at 2kHz spacing, the BDR3 improves by 15dB with the 600 Hz INRAD
> > roofing filter.
> > There is nothing you can do to an OM7 or IC7800 (within reason) to come
> > anywhere near this level of performance.
> > NOTHING!
> > 
> > The fundamental difference here is the technical difference between upward
> > conversion and downward conversion.
> > 
> > AT THIS POINT Rob always jumps in and points out that it is not impossible
> > with upward conversion.
> > Indeed the PT-8000 achieves it, but at a $17K price tag.
> > That's why I added the modifier, "within reason".
> > For those of us who work for a living, $17K is beyond reason!
> > 
> > 73 - Rick, DJ0IP
> > (Nr. Frankfurt am Main)
> > 
> > -----Original Message-----
> > From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Rick -
> > DJ0IP / NJ0IP
> > Sent: Wednesday, February 26, 2014 6:38 PM
> > To: n4py3 at earthlink.net; 'Discussion of Ten-Tec Equipment'
> > Subject: Re: [TenTec] In praise of older technology AM
> > transmitwithTenTecrigs
> > 
> > The Omni VI with the INRAD roofing filter is about 15 dB better than the OM7
> > or 7800.   Really no comparison.
> > There most certainly is a difference but you will probably only notice it in
> > a side-by-side comparison during a BIG contest; not in every day life.
> > 
> > I don't recall Rob ever testing the VI with INRAD.
> > 
> > 73 - Rick, DJ0IP
> > (Nr. Frankfurt am Main)
> > 
> > man/listinfo/tentec
> > 
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