[TenTec] In praise of older technology AM transmitwithTenTecrigs

[Barry N1EU]

As far as the menu ergonomics, if the Omni VII is anything like the Orion
(I believe it is), it's the easiest to use menu system I've ever
encountered on an hf radio.

As far as the roofing filter - you really only need this IMHO if you're
doing cw contesting.  The Inrad Web site seems to be down now so my
comments are from memory.   I believe the URL is
http://www.inrad.net/product.php?productid=210  - they may have two 600hz
filter options with the roofing filter depending on what sidetone frequency
you prefer.  Ideally, the roofing filter center frequency should match the
center frequency of the narrow 9MHz i.f. filter that you will use in tandem
with it.

73, Barry N1EU


On Thu, Feb 27, 2014 at 12:31 PM, Brian Carling <bcarling at cfl.rr.com> 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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