TopBand: linear loading

ROBERT G. FRICK a92gd@contesting.com
Fri, 22 Nov 1996 15:46:40 +0300


howdy folks,
  hope to have 160m vertical up within a week or two  but need to get some info 
regarding linear loading first.
  situation is as follows.  I have a steel pipe mast which is approximately 43 ft in 
length. it in turn is mounted on/in a 5 ft length of heavy duty pvc. two feet of pipe 
has been inserted into the pvc which leaves 3 ft of pvc which is acting as insulator. 
the entire structure will be erected in the middle of my flat roof which measures 40ft 
by 60ft. the roof is surrounded by a 3ft parapet. somewhere around 41 ft of pipe will 
be above the lip of the parapet. also the roof is about 12 ft from the ground so all in 
all the pipe will be around 53 ft up in the air.  the antenna is similar to the K3ND 
LOWBAND VERTICAL which was described in the July 1966 edition of THE LOWBAND MONITOR.	
The main difference is that i will not be using a spoked top hat assembly but instead 
will use four 35ft lengths of top loading wire running to each corner of the roof. Pres 
(N6SS) has suggested that I go for linear loading so the question is using the info 
which I have given you, what would be the dimesions of the linear loading assembly. 
Here in Bahrain I dont have access to much lowband literature.
  so folks, any information you can provide would be greatly appreciated.
73's
A92 GARBAGE DUMP
Bob

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