View Single Post
  #4   Report Post  
Old April 17th 08, 07:17 PM posted to rec.radio.amateur.antenna
Barrett Barrett is offline
external usenet poster
 
First recorded activity by RadioBanter: Oct 2007
Posts: 69
Default 1/4 Wave on 28.500MHz

Just went out to get things ready to try the Ariel's out tomorrow and it
occurred to me that the 20ft pole is resting on the patio. To make this
work, would I need to lift the pole off the floor and would 1ft be enough?

Thanks


"Barrett" wrote in message
...
Thanks Richard


"Richard Clark" wrote in message
...
On Thu, 17 Apr 2008 16:09:10 +0100, "Barrett"
wrote:

I have a stainless steal 1/4 wave length mobile whip.

Can I mount this on top of a 20ft aluminium scaffold pole and use the
pole
as the ground radial?
I also have a mobile AM-80 for 80 meters. Can I mount this in the same
way
and will it work ok?


Hi Barrett,

The combination will give you an offcenter, vertical dipole (for
either band you are investigating).

This is not a bad thing, just something that may not tune up the way
you think it "should."

The 10M application will have three sections:
1. The quarterwave whip;
2. a 5/8ths wave lower section (the pole);
3. an undefined length of transmission line (unless you choke it).

73's
Richard Clark, KB7QHC