From: "Steve N4LQ" <n4lq@iglou.com>
Reply-To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] cw creation
Date: Mon, 25 Apr 2005 20:14:49 -0400
Name one for instance so we can check it out.
One example could be the SBE Model 34 (Sideband Engineer) with its coadapter
which generated a "close" to sine wave audio tone that was introduced into
the microphone jack, generating an apparently legal type of "CW." Similar
generation was accomplished in the early Collins line.
Other examples are the "Ultra Low-Cost HF SSB/CW Transceiver (20 watts)
designed by Denys Roussel F6IWF published in VHG Communication Magazine (URL
www.vhfcomm.co.uk/vhfindex.htm, and "A Single Sideband Modulator for the Low
Frequency (LF) Transmitter (The Phasing System of SSB revisited by Lloyd
Butler VK5BR, originally published in "Amateur Radio", September 2000.
Apparently this method had it problems and required rigid alignment to
prevent unwanted transmitted frequencies associated with this method.
73, Jim (wd4air)
Steve Ellington
N4LQ@iglou.com
----- Original Message -----
From: "James Duffer" <dufferjames@hotmail.com>
To: <tentec@contesting.com>
Sent: Monday, April 25, 2005 7:51 PM
Subject: Re: [TenTec] cw creation
>
>
> Snip
>
>>In any case the best way to get
>>a clean CW signal out of most rigs is to use CW mode and an key input,
>>NOT SSB and a keyed audio tone input.
>
> Snip
>
> That is what this thread was about! The method a SSB rig uses to create
> CW.
> A great many rigs use a single sinusoid audio tone to create a psuedo
CW
> signal.
>
> An interesting thread.
>
> Jim wd4air
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