Towertalk
[Top] [All Lists]

## [TowerTalk] Speaking of Vertical

 To: [TowerTalk] Speaking of Vertical W4EF@dellroy.com (Michael Tope) Wed Mar 5 14:02:24 2003
 ```Generally the relative level of electric field of the vertical component is given by cosine of the angle of the radiator relative to zenith. Thus for a 5 degree angle, the loss in the power pattern of the vertical polarized component will be: Atten = 20*log[cos(5)] = -.03 dB for 15 degrees slant we get: Atten = 20*log[cos(15)] = -0.3dB At 45 degrees the theoretical loss is -3dB, but there may be some additional loss due to the changes in antenna efficiency as the radiation resistance of the antenna is effected by proximity of the wire to the ground. In short, as long as the antenna is mostly vertical, you won't see much effect. 73 de Mike, W4EF..................................................... ----- Original Message ----- From: "Bill Gillenwater" To: Sent: Wednesday, March 05, 2003 8:35 AM Subject: [TowerTalk] Speaking of Vertical The "how vertical is vertical" question raises another question. If I put up a wire vertical, how vertical does it have to be? In-other-words, I have a tree that is 50 feet high, or even 60 feet high, how much can I "lean" the vertical wire and get the same results as a "true" vertical wire?? 73 Bill _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread [TowerTalk] Speaking of Vertical, Bill Gillenwater [TowerTalk] Speaking of Vertical, Chris BONDE [TowerTalk] Speaking of Vertical, Bill Gillenwater [TowerTalk] Speaking of Vertical, Michael Tope <= [TowerTalk] Speaking of Vertical, Jim White, K4OJ [TowerTalk] Speaking of Vertical, Mark