[TenTec] cw creation

[Bob Stephens]

Grant,

Thanks. That makes sense.

  How about sound card technology? I believe there is a way to send cw 
using a RigBlaster type set up. Does anyone know if "Rigblaster CW" would 
be the tone injection method, or does the sound card DSP key a single 
frequency on and off resulting in true A1A?

tnx to everyone contributing
Bob, KB1CIW

At 08:48 PM 4/24/2005 -0500, you wrote:

>  <snip>
>
>I think we're getting our tongues wrapped around the ideas crosswise here.
>
>As Steve said, some Collins radios (at least the KWM-2 and I think the
>32S-1) used the audio tone injection method.  And it wasn't a particularly
>happy marriage [particularly in the KWM-2).
>
>A keyed carrier (a lot of assumptions and hand waving) results in a single
>frequency being transmitted.  A tone modulated SSB transmitter (more
>assumptions and hand waving) has a carrier (reduced) and an opposite
>sideband (also reduced).  So it results in THREE transmitted signals -- the
>one you want, and two more you don't want at some (hopefully) reduced level.
>If the opposite sideband and carrier are reduced far enough, it looks like
>A1 -- if they aren't you might at least hear from an OO if the FCC :-)
>
>The DSP stage outputing an 11 Khz carrier is NOT the same thing as a "tone".
>It is a real, single frequency, RF carrier that gets mixed in several
>heterodyne stages to the desired output frequency.  And is standard,
>ordinary, everyday A1.
>
>I haven't dug into it, but I believe the Orion (and any other current DSP
>radio worth its salt) will do the latter -- true A1.
>
>Grant/NQ5T
>
>
>_______________________________________________


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.10.2 - Release Date: 4/21/2005