TenTec
[Top] [All Lists]

Re: [TenTec] Orion Sub Receiver BW

To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] Orion Sub Receiver BW
From: "Grant Youngman" <nq5t@comcast.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 16 Mar 2006 17:12:58 -0600
List-post: <mailto:tentec@contesting.com>
No one is disputing the mathematics behind one sideband with carrier, and
we'd all like to have a full 6Khz or therabouts per sideband.  It's all
true, and it's mostly totally beside the point.  In any real, PRACTICAL
sense, one sideband with carrier, obtained by shifting the passband is not
the "Orion II/v2 is broken" disaster you make it out to be.

You tell me -- in the presence of selective fading, band noise, other
miscellaneous interference -- whether you are going to have your SWBC
experience nullified by shifting the passband?  I don't think so.

And besides, that what a sync detector is for, if only the Orion had one :-)

Grant/NQ5T

> 
> Furthermore, attempting to amplitude-demodulate only the 
> carrier and a single sideband generates nonlinear distortion, 
> caused by the fact that the resulting RF envelope no longer 
> represents the audio signal faithfully.
> 
> A single sideband of an AM signal can be demodulated without 
> distortion by a linear process, i.e. a product detector 
> supplied with a carrier of the proper frequency and phase. 
> But this is not possible with Orion.


_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec

<Prev in Thread] Current Thread [Next in Thread>