Do you know which (#bits. real or float) DSP the 340 uses ?
----- Original Message -----
From: "Paul Christensen" <paulc@mediaone.net>
To: "Mike Hyder -N4NT-" <N4NT@chartertn.net>; "Carl Moreschi"
<n4py@earthlink.net>; "tentec" <tentec@contesting.com>
Sent: May 06, 2001 17:16
Subject: Re: [TenTec] Rx-331 Front End - N4PY
>
> Absolutely. In fact, the one and only weak link in my RX-340/Pegasus
> combination is the relatively high phase noise of the Pegasus synthesizer.
> Not so with the RX-340. In fact, I can null a received CW tone with known
> low phase noise on the RX-340 to a greater degree than I can with my Omni
> Six which uses crystal mixing. The synthesizer in the RX-340 is that
good.
> Another absolutely stunning performance feature of the RX-331/340 is the
> I.F. DSP shape factor. I am now using a Fast Fourier Transform program
from
> Sound Technology Corporation called Spectra-Plus. This is incredible
> software if you're an audiophile and works very well in characterizing
your
> own transmitted SSB bandwidth for those who are now venturing into the
Hi-Fi
> SSB scene. If you have a sound card in your PC, here's the link to a free
> 30-day trial:
>
> http://www.telebyte.com/pioneer/
>
> By clicking on the peak-hold button you can almost instantly characterize
> any receive or transmitted passband characteristic. With Spectra Plus,
it's
> very easy to see the RX-340's tight filter skirts.
>
> Of course, the heart and soul of the RX-340/Pegasus world-class
combination
> is the N4PY software. Those of you who think that excellent QSK cannot be
> achieved with "separates," QSK is every bit as good as any other Ten-Tec
> with Carl's sequencing protocol. At some point, I'm hoping that Carl
> bullet-points the entire feature set of his software as it has evolved
over
> the past year and a half.
>
> As Carl noted, the front end on the RX-331/340 receivers is outstanding.
A
> few weeks ago, I computed that you needed something like a 2 watt signal
> driven directly into the receiver's antenna jack to overload and compress
> the front end! (preamp off).
>
> I think it would be great if Ten-Tec and Carl could demo of this
combination
> at Dayton. I guarantee it would steal the show and be the talk even among
> the die-hard FT-1000MP and ICOM-765PRO users.
>
> -Paul, W9AC
>
> ----- Original Message -----
> From: "Mike Hyder -N4NT-" <N4NT@chartertn.net>
> To: "Carl Moreschi" <n4py@earthlink.net>; "tentec" <tentec@contesting.com>
> Sent: Sunday, May 06, 2001 12:28 PM
> Subject: Re: [TenTec] Rx-331 Front End - N4PY
>
>
> >
> > That is impressive -- a notable tribute to the clean signal transmitted
by
> a
> > Delta 580, as well as the Rx-331 receiver. Do you think that a
> synthesized
> > radio's transmitter would be as clean?
> >
> > 73 de Mike N4NT@chartertn.net
> >
> > ----- Original Message -----
> > From: "Carl Moreschi" <n4py@earthlink.net>
> > To: "tentec" <tentec@contesting.com>
> > Sent: Sunday, May 06, 2001 10:53 AM
> > Subject: [TenTec] Rx-331 Front End - N4PY
> >
> >
> > >
> > > I decided this morning to do an experment to see how resistant
> > > my RX-331 is to front end overload. I have a dipole on a separate
> > > feedline located about 100 feet from my tower. On my tower, I have
> > > a log periodic 8 element antenna. I tuned the RX-331 to 21.250 and
> > > was listening to a Russian station running about S7 on the log
periodic.
> > >
> > > I setup my Ten-Tec 580 Delta to the dipole and tuned it to 21.050.
> > > I transmitted a carrier. No effect whatsoever was heard on the
RX-331.
> > > In fact I found the RX-331 was not the least bit disturbed by the
> Delta's
> > > 100 watts until I got to within 10 kHz of the RX-331 tuned frequency.
> > >
> > > I thought this was very impressive. I have never seen another front
> > > end on a receiver that was this strong. This would certainly solve
> > > what I call the classic "field day problem", when you run many rigs
> > > close together.
> > >
> > >
> > > Carl Moreschi N4PY
> > > Franklinton, North Carolina
> > > n4py@earthlink.net
> >
> >
> >
> > --
> > FAQ on WWW: http://www.contesting.com/FAQ/tentec
> > Submissions: tentec@contesting.com
> > Administrative requests: tentec-REQUEST@contesting.com
> > Problems: owner-tentec@contesting.com
> >
>
>
> --
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>
>
>
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