[TowerTalk] EF140 up Cushcraft A4S

John Langdon jlangdon@outer.net
Sun, 30 May 1999 12:04:30 -0500

I have C4XL's with the roughly the same 40M elements as the EF140.  At five 
feet you will see interaction with anything you put there, whatever 
orientation.  Eight feet would be pushing it.  I seen to remember Tom at 
Force 12 saying 12 feet recommended distance.  Could you model it to see 
what the induced currents are?  If no modeling and just guessing - don't 
even consider 5 ft, get at least 10 ft.

73 John N5CQ

-----Original Message-----
From:	Gian Luca Cazzola [SMTP:glcazzola@iol.it]

I am searching opinions about stacking a Force 12 EF140S (40m. rotating 
dipole) and my old Cushcraft A4S on a 8 feet mast up a tower 30feet hight 
on the roof of my home-high 40feet. What do you think about only a distance 
of 5feet between the two antennas?

FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm