InterceptRadio.com Forums

The radio website that puts military & officer safety ahead of profits.
It is currently Thu Mar 28, 2024 12:14 pm

All times are UTC - 8 hours


Forums       Map Search       Database Search       Live Audio       Alerts       Wiki




Post new topic Reply to topic  [ 1 post ] 
Author Message
PostPosted: Wed Jan 07, 2015 3:05 pm 
Offline
User avatar

Joined: Mon Jan 31, 2011 1:10 pm
Posts: 68
The antenna is comprised of a SO-239 UHF connector on the center bottom of a circular mounting foot that has four holes to mount to a locomotive or railcar. The foot is 2 13/16" in diameter which is welded to a 1" diameter brass pipe that extends from the mounting foot approximately 11" to a brass disk. This brass disk (looks as if it) is welded to a 3" diameter, 1/8" thick cylinder that is 8" long that surrounds the supporting 1" pipe and makes up the most visible part of the antenna.

The center conductor of the coax enters the antenna via an SO-239 in the mounting foot and is brought up through the 1" pipe via a silver wire to a wide nut encapsulated in plastic. The energy is then sent through the 1" pipe via holes to the outside 3" cylinder via silver all thread that is electrically coupled to it via star lock washers held in place by ny-lock nuts. From here the electrical path takes the energy up to the top disk of the antenna where the center supporting pipe will take it all the way to ground via the supporting foot and the ground of the SO-239.

The antennas upper ruggedization comes from two semi-circular, 3/4" thick pieces of "C" shaped plastic that provide structure rigidity between the 1" pipe and the inside of the 3" cylinder that is held in place by the two pieces of all-thread.

<Concluded in Part 3>


You do not have the required permissions to view the files attached to this post.

_________________
Using yesterday's technology...tomorrow!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by electricity. Copyright © 2013 Interceptradio.com