Here you go:
I put a less compressed version up that doesn't show
the artifactual "flock of birds", "high pitched ssb"
or whatever you prefer. Note that this recording is a
newer FT-1000D/Orion 15M weak cw signal comparison
although it has the same file name as my original
recording - signals are a little weaker (but there is
QSB up and down a bit), and Orion setup a bit better.
Recordings start with Orion and switch back and forth.
The FT-1000D noise sounds hissier and the Orion noise
sounds more "barrel-like" (broader spectrum).
These files are not on my main Web site, but here:
147KB version:
http://n1eu.tripod.com/orion/1000D_compar.mp3
441KB version:
http://n1eu.tripod.com/orion/1000D_compar_hi.mp3
73,
Barry N1EU
--- al_lorona@agilent.com wrote:
>
> Yeh, I guess you're done for the day, Barry. Have a
> good one.
>
> I don't know why the SSB splatter would be artifact
> of MP3 if all you're
> doing is recording audio output from the rig.
> Wouldn't that have to be
> generated in the FT1000? Whatever.
>
> By my last statement, I mean try to copy the CW
> signal in your
> recording! Let's see who can do it... some of the
> big contesters should
> have little difficulty doing it.
>
> Al W6LX
>
>
>
> > -----Original Message-----
> > From: tentec-bounces@contesting.com
> > [mailto:tentec-bounces@contesting.com] On Behalf
> Of Barry N1EU
> > Sent: Wednesday, February 11, 2004 12:52 PM
> > To: tentec@contesting.com
> > Subject: Re: [TenTec] Barry's recordings
> >
> >
> >
> > --- al_lorona@agilent.com wrote:
> > >
> > > Hi, Barry,
> > >
> > > If you hadn't told me that the bandwidth was the
> > > same on both, I would
> > > have sworn that the Yaesu was set to a wide
> > > bandwidth. Maybe it's just
> > > the center frequency of the filter, which sounds
> > > definitely higher on
> > > the Yaesu, but there seems to be a lot more of
> the
> > > high frequency SSB
> > > splatter audible on the Yaesu.
> >
> > I already posted a message to the reflector
> explaining
> > that the "SSB splatter" on the FT-1000 audio is
> > actually mp3 encoding artifact and to please
> ignore
> > it. That's the price of squeezing WAV files down
> to
> > manageable mp3 size.
> >
> > The FT-1000 has much higher internal noise,
> perhaps
> > from the audio stages. That's all the hiss you
> hear
> > from the FT-1000 - not from a wide filter. It's
> quite
> > evident when you run a audio spectrum analyzer on
> its
> > audio compared to the Orion. Both radios are
> running
> > 250hz bandwith.
> >
> > I repeated the test after my initial postings and
> > optimized the Orion's AGC and filtering further.
> In
> > that final test (the current mp3 file is from this
> > last test), the Orion did not seem substantially
> > noisier than the FT-1000 and weak signal detection
> was
> > at least a toss up or maybe even a slight edge to
> the
> > Orion. It put to rest in my mind any doubts of
> > Orion's weak signal capability in the face of
> K6SE's
> > original test and questions raised by K3BU.
> >
> > > By the way, I challenge the reflector: post here
> > > your copy of as much of
> > > the transmission as you can.
> >
> > Not sure what this means? From my end, the book
> is
> > closed on this experiment.
> >
> > Sorry for being brief, but trying to get out the
> door
> > here at work.
> >
> > 73,
> > Barry N1EU
> >
> >
> > __________________________________
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> >
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