Thanks Eric but I don't get QST over here.
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Eric F.
Richards
Sent: Saturday, February 14, 2004 12:44 AM
To: tentec@contesting.com
Subject: RE: [TenTec] Occupied Bandwidth
The bandwidth issue was addressed in the review of the AOR
product
in 2/2004 QST.
At 11:30 PM 2/13/2004 +0100, you wrote:
>Jim, I haven't read that yet, but I have a question. Perhaps
you
>are correct that it will be a bandwidth hog, but perhaps not.
It
>is likely true that the single signal needs a wider bandwidth,
>but can other stations - better yet, other QSOs be going on at
>the same time on the same spectrum of bandwidth? If the answer
>is yes, which I suspect, then the bottom line will be better
>spectrum usage (which is what you get with narrower bandwidth -
>it's just another approach).
>
>I'm curious to find out.
>
>73
>Rick
>
>-----Original Message-----
>From: tentec-bounces@contesting.com
>[mailto:tentec-bounces@contesting.com]On Behalf Of Jim Reid
>Sent: Friday, February 13, 2004 9:48 PM
>To: tentec@contesting.com
>Subject: [TenTec] Occupiedd Bandwidth
>
>
>Ref, the discussions here about used bandwidth.
>
>How about the occupied bandwidth of the "comming"
>ditital audio signals. Per Doug Smith's web site, a
>unit is now on the market, a gadget called an
>ARD9800, being built by AOR USA, Inc. see:
>
>http://www.aorusa.com/ard9800.html
>
>As I gather from the description and specs given, this
>"digital SSB" signal will fully occupy 3 kHz of bandwidth
>using 36 separate PSK carries for all the needed info!!
>
>Wonder what sort of "bagpipes" that will sound like when
>you happen to tune across one? Can hardly wait to
>hear one. And talk about 60 meter tuning needing to be
>accurate; evidently to demodulate and hold a QSO, both
>ends must be "precisely" on the same frequent -- wonder
>where in the 3 kHz spread of PSK carriers you need to
>be, hi. The signal is also near 100% duty cycle as with
>all PSK.
>
>73, Jim KH7M
>
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--
Eric F. Richards
efricha@dimensional.com
"The weird part is that I can feel productive even when I'm
doomed."
- Dilbert
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