[TenTec] In praise of older technology AM transmitwithTenTecrigs

Barry N1EU barry.n1eu at gmail.com
Sat Mar 1 11:29:48 EST 2014


Hard to comment on #1 without knowing what's in that slot.  I've had
some filters get marginal with age and others are fine.

For #2, that's common and it's fairly easy to adjust with instructions
in manual and a reference signal (Elecraft XG etc)

73, Barry N1EU

On Sat, Mar 1, 2014 at 3:53 PM,  <bcarling at cfl.rr.com> wrote:
> 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
>> >
>> > _______________________________________________
>> > TenTec mailing list
>> > TenTec at contesting.com
>> > http://lists.contesting.com/mailman/listinfo/tentec
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec


More information about the TenTec mailing list