Get a copy of the 2004 ARRL antenna book and there's a program in there
called HFTA that can answer your questions.
It will plot the lobes against statistical predicts of incoming elevation
angle for various other places you might want to talk to.
You'll need to know your local ground characteristics (resistitivty,
dielectric constant). You could start with the flat ground and not fool
with the terrain effects at first.
Well worth the $40.
----- Original Message -----
Sent: Saturday, October 16, 2004 12:15 AM
Subject: [TowerTalk] Tower height increments
> Greeting fellow TTalkers,
> I have an interesting question.
> Does anyone know what happens to the radiation lobes for a 40 meter yagi
> when it height above the ground is changed from 69 feet to 79 feet? It
> boils down to whether or not the extra 10 feet is really worth it --- or
> potential hassle from a City Engineer for the extra 10 feet.
> Regards, Warren Wolff; W5KKW
> 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
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