John,
Thanks for the reply. I didn't recall a sweep bandwidth adjustment, just the
sweep size. I wonder if I missed that or if it was added since last summer?
Is the sweep bandwidth related to the receiver bandwidth?
While I'm not sure about the absolute performance specs, with the Icom 756
and 756 Pro (never had a Pro II), I could usually use the sweep to tell what
kind of signal was present (CW, a steady carrier, voice or even SSTV). Is
that possible with the Orion? One of the things I used to do was to tune CW
with a very narrow filter and use the sweep to tell me if there were other
signals in the vicinity (which I wasn't hearing).
I know that you get a more detailed representation of the audio using a
spectral analyzer. However, that is limited to the audio bandwidth, at most
a few kHz. With the 756 Pro, you could scan 100 kHz. When I had the Orion, I
think the sweep was limited it 72 kHz, but that's still a lot more than you
can do with an audio output.
73,
Mark
----- Original Message -----
From: <N0KHQ@aol.com>
To: <tentec@contesting.com>
Sent: Saturday, June 12, 2004 7:18 PM
Subject: [TenTec] Orion Sweep - Mark
> Hi Mark,
>
> The Orion Sweep is similar to the Jupiter in respect to the width of the
of
> the signals shown. This is adjustable by varying the bandwidth.
>
> Right now I have the Orion Sweep size set at 72khz, the Bandwidth set at
3K
> and Roofing Filter set at 6K. By decreasing the Bandwidth from 3K to 1.8K
the
> Sweep samples become narrow.......and that's what is supposed to happen.
When
> the Sweep size is set to 32khz and the Bandwidth is left at 3K the
samplings
> will be "fat". As you reduce the size of the Bandwidth down to, lets say
1.8K,
> the samplings begin to narrow. This is expected.
>
> As a former IC-756Proll owner. I must say that the Orion Sweep is as good
or
> better. The 756Proll should not be used as a standard. (TT sets the
standard
> for excellence) It is best to sample the audio signal from the Orion "Line
Out"
> to a PC based Spectral Analyzer, I use Hamalyzer for all of my work and
> testing.
>
> I would imagine that the "real" Sweep testing will come those that run CW.
> This should get pretty interesting.
>
> The Orion Sweep has been running all day with no signs of erratic
> behavior........just smooth and accurate.
>
> Later
>
>
> 73
> John / N0KHQ / St. Louis
>
> Always on 18.130
>
> Antennas:
>
> You can build 'em better than you can buy 'em
> Please visit the sites below:
> http://www.hamuniverse.com/17mcoaxmox.html
> http://www.cebik.com/n0khq.html
> http://www.ssb-audio.com/forum/
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
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