[Milsurplus] Propagation exercise

Wed, 07 Jan 2004 10:40:36 -0800

Hi Bob:

Chirp sounding can be done using either vertical incidence or oblique 
methods.  The vertical system has the transmitter and receiver 
collocated near the antenna.  Oblique sounding typically has the 
transmitter and receiver located at the ends of a path.  There are 
currently dozens of oblique sounders all over the world some use 
omnidirectional antennas and others use rhombics.  You can receive them 
using a number of different techniques, for more see my web page:
http://www.pacificsites.com/~brooke/RCS-5A.shtml

73,

Brooke Clarke, N6GCE
http://www.PRC68.com

>Date: Tue, 06 Jan 2004 15:37:18 -0600
>To: [email protected]
>From: Bob Wilder <[email protected]>
>Subject: [Milsurplus] Propagation exercise
>
>Does anyone remember the program that transmitted a RF signal straight up to measure
>the "E" and "F" layers.  There was a station at Pepperrell AFB, NFLD in the early 1950's
>that transmitted a sweeping signal between about 3 to 15 Mcs into a half rhombic. Used to
>raise havic with 75 and 20 meters.  The transmitter was down in the White Hills area
>near the supply storage area. The program was called something like "Spherics".  I was
>thinking back to my days at Pepperrell in the early 1950's.
>
>Bob Wilder
>6032 Idlemoore Court
>Theodore, AL 36582-4117
>251-653-5274
>http://home.earthlink.net/~bwild
>Asst USAF State MARS Director- Alabama
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