The San Diego DX Club

An ARRL Affiliated Club

 

 

 

 

 

 

 

 

 

 

Next Regular Meeting:
Wednesday Evening, May 27, 2015

 

EME -
FOR THOSE WHO WOULD LIKE TO WORK SOME REALLY CHALLENGING DX

Earl Towson - N1QI - is a retired aerospace engineer with a lifelong interest in astronomy. Since retiring he now supports San Diego State's Astronomy Department as a guest lecturer for Astrobiology and Planetary Sciences.

In addition, he is a NASA/JPL Solar System Ambassador. He will discuss how the sun works and how hams can use its interactions with the earth to forecast radio propagation.

Earl will discuss the problems involved in doing Earth-Moon-Earth (EME) communications and the development of Joe Taylor's WSJT software that makes it possible for hams to do so. The path loss of communicating with the moon over a path length of nearly a half a million miles results in a two-way spreading loss of over -250 dB. Taylor's software has allowed some operators to even earn their DXCC on 2 meters using EME. Incidentally, Taylor's software also gives Earth-to-Earth communications a twelve fold boost over CW making worldwide QRP much easier.

 

 

 

 

 

April Bulletin
Club Shirt and Hat Order Form

 

 

 

 

Meetings are normally held the fourth Wednesday of the month
(except the month of December)

at the Sizzler Steak House
3755 Murphy Canyon Road, Suite S.
San Diego, CA 92123

 

Social Hour: 5:00 PM
Dinner: 5:30 PM
Meeting: 6:30 PM

 

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