It stiffens the antenna without adding weight. That is why if you really are
speeding it does not bounce off your windshield like the old ones used to
do, like my fathers old 79 Club cab always did when it was windy of driving
on my truck and the black dots on the top of the
Helps to shade the eyes from the sun.
Actually the antenna was designed that way to cut down on wind noise.
without that twist you may have gotten wind noise. If you remember way back
there was even a commercial on TV that Chrysler had stating how much trouble
they go thru to keep noises down, part of that ad was discussing the
Not sure about the dot thing cause I am not a truck dealer. And without
telling me the model and year I cant look it up to give you an answer. But
it could be part of a deicer or just for protection from the sun.
my assumption on the spiral was that it had somthing to do with your remote
to unlock the doors. Now the dots I just figured they were an instant
deicer. See I read a message in the chevy group and someone had replied but
I didnt think that it was true.
The black dots or Dot Matrix are sun protection. The cost of the vinyl
ply with the tinting on the edge has been slowly phased out as a cost
saving measure. Almost all new vehicles sold have the winshield edges
painted to hide the sealer. With less trim and edges even exposed like the
Jeep liberty it is a cheap way to cover things up. Now some Makers have
automatic de-icers but this is an expensive option. And damn hard to make.
Also if there are only a couple of dots they may be robot locating points
The spiral is actually cut into the stainless shaft that the antenna is
made from. The end ball and the mounting screw fitting with locktite are
then pressed on. Then it goes through a wash and pretreat and then
through a powder coat booth. Ford and Chrysler were the first to use the
spiral cut to both reduce wind noise and to reduce antenna harmonic
motion due to wind drag. GM followed VERY shortly, The only real
drawback is the spiral cut antennas are not as strong as the standard
shaft units and they make lousy window breakers ( take a course on EMS
vehicle extrication for that neat trick ) because of it.
Oh and if you own a Ford or Chrysler with a fixed antenna it was
probably made in Amsterdam NY by Ward Products. The chrome or black
spanner nut securing it was produced by Manth/Brownell near Kirkville
NY. It was also painted by either WW Custom Clad or Sumax powder
coaters. And at least 30,000 of them were scrapped after WW had a fire
that damaged the coating after they were processed.
> > "Adam" <abomb6900(zerozero)@verizon.net> wrote in message
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.