[TenTec] In praise of older technology AM transmitwithTenTecrigs

[Brian Carling]

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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