[HCARC] Antenna Question

[ALoneStarYank at aol.com]

The Cushcraft  R5  has 4 radials on the bottom of the  antenna to act as  
basically your "above ground radial system" or counter  poise, since this 
antenna is meant to be mounted at least 12 feet above actual  ground. The 
"capacitance hat"  you mention has nothing to do with a counter  poise. A 
capacitance hat is a metal "hat" near the top of an antenna  (in the case of this 
antenna, it's 4 broad pieces of metal) which is  used to extend the usable 
bandwidth when operating on 40 or 80 meters which  without this hat is only 
about 10 khz wide on 80. With it, the bandwidth is  about 30 khz. I have an R5 
in my back yard. The good thing about it is that  if properly tuned it 
requires no tuner AND because of it's radiation angle it  makes a fairly good 
antenna for DXing if you don't have room for a  beam.   It is much better than 
a 5BTV antenna and I've used this  antenna for many years when I would 
activate different light houses since  it breaks down into easy to handle 
sections. I was the first ham to  activate the Montauk Point Lighthouse on Long 
Island and assembled and mounted  it near the top of the lighthouse along the 
look out railing. The DX was  fantastic. I have some great photos of this 
and also did amateur TV from the top  of the lighthouse so people who couldn't 
make the climb could see what the view  was like. There are other Cushcraft 
verticals that I do not like and if you want  to know why I'll answer at a 
later date.
73
Bob W2IK
 
 
 
In a message dated 10/28/2012 7:56:59 A.M. Central Daylight Time,  
tower2 at stx.rr.com writes:

It's a  Cushcraft R5 which is a half-wavelength antenna.
There are 4 base load  radials which act as a top hat capacitance.
See:  http://ok1ike.c-a-v.com/soubory/ant_txt/Cushcraft%20R-4-5-7.pdf
Hv


-----Original  Message-----
From: hcarc-bounces at mailman.qth.net  [mailto:hcarc-bounces at mailman.qth.net]
On Behalf Of Gary and Arlene  Johnson
Sent: Saturday, October 27, 2012 21:26 PM
To:  hcarc at mailman.qth.net
Subject: [HCARC] Antenna Question

Today  at  the Club station we were operating using the vertical  antenna.
What does this antenna use for a ground??  Does it use  radials on the roof
or at it's height are radials  unneccessary??

Gary  J
N5BAA
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