Mounting antenna

Why do you have to changr antennas

@ 27 MHz you need all the ground you can get most antennas would like 9 foot but its not easy to get that much. IF you get a good match I would leave the antenna alone ..... Don't use the coax a good match should not care how long the coax is ....

 

why do people mount these 102 on the frame
who came up with this idea
i see drivers come thru all the time talk about how good it is and then i show them what they dont see
Reflection
i have not seen one yet below a 1.8 swr

if you do mount to the grab bar behind the cab if you go with a good antenna say a center load or coil antenna
the predator 10k would be the best choice of brand
then you need to measure from bar to top of cabthen add 12 inches to that
the coil has to be above the top of cab at least a foot
in my 25 years of antenna tuning correctly
from where the bar is mounted run ground strap
notice the word strap
its grounding strap its flat and 1/2 to 1 inch is better
run down to both sides of frame
if you have any more question you can pm me here
http://www.cbjunkies.com/forum.php?referrerid=40

 

It also helps to remove the bolts from the bar, remove the rubber pads from under the bat, sand or grind the surfaces then reinstall with 1" flat ground straps to the frame. If your truck has a single stack, mount the antenna 2/3 way on the bar away from the stack.

 

As long as the majority of the antenna, more then 2/3s, is above the roof line and it is far enough away from any metal then it should be fine as long as it has a good RF ground and can tune properly.

That firestick you currently have should be doing alot better then 2 miles. If not then there is something wrong with either the antenna, the mounting or the coax.

 

I helped one of my neighbors install a Predator 10K on that bar on his truck about a month ago...We ran ground straps off each end of the bar, and used a mirror mount on the bar...Mounted it right in the middle and it tuned to 1.2 SWR....This was a single coil Predator 10K with a 22" lower shaft that I had lying around in the shed...