[TenTec] Hello Orion Users

[Mike Hyder -N4NT-]

Now I get it.  I can save a bundle by just hooking my aerial to my tweeter.

73, Mike N4NT

----- Original Message -----
From: "Stuart Rohre" <rohre at arlut.utexas.edu>
To: <tentec at contesting.com>
Sent: Tuesday, May 06, 2003 3:19 PM
Subject: Re: [TenTec] Hello Orion Users


> Interesting discussion on RF vs. AF.  Well, RF once it gets into a wire
does
> not travel as fast as light.
>
> And generally, we consider it RF if it retains its wave action of having
an
> alternating magnetic and electric field.  While the AF is a varying
voltage
> without significant field components, due to its longer wavelengths.  IF
you
> froze the AF instantaneously, it would look like a varying DC as compared
to
> its amplitude earlier.
>
> At 14 kHz there is kind of a duality.   10 to 20 kHz was commonly used for
> LF RF transmission in the days of Alternators used as transmitters.  (The
> Alexanderson, which was used by USAF as late as 1958, dating from the
early
> part of the century).  Yet, 14 kHz is commonly seen in tweeters for AF,
> producing a mechanical vibration with action of its transducer.  The
> Alexanderson Alternator produced an RF wave from its transducer, which was
> the large antennas used with the old systems.
>
> The most convenient distinction between RF and AF is the presence of both
> significant magnetic and electric fields around the conductor of RF.
>
> 73, Stuart K5KVH