Set up advice

I have a GE 40 channel model 3-5840B from like the 70's and a mike from Radio Shack bout the same time plugged into the lighter, I just bought a new 39" steel magnet mount from Radio Shack and took the SWR meter to it and as far as i could figure out with the distructions it was between 1 and 1.5 (don't know what it means) i have it on top of the roof of my truck with the coax running down the back under the truck and up through the door under the trim to the radio. Im receving better than i was with my old antenna. I've heard about hard wiring it but don't know how i have a 91 Ford F-150. any advice to improve my setup would be helpfull, I like to listen and talk but i don't know how to improve it.


Thanks
Kyle

 

I've head about those 102" whips but it sounds like whoa almost taller than my truck and if i go longer whould i have to take the SWR meter to it again?

 

Lol now where whould i go about buying one of them 102" the longest i've seen around is 64", and whould i have to mount it somewhere else than the roof cause it would be so tall, and is there a good SWR meter that's cheap cause i don't think the guy at the radio shack will let me buy it again and return it again. i didn't see the need to keep it since i had only planned to use it once and for 50 bucks it was expensive. Whould a Cb shop tune it for you?

 

And i didn't know if i should get a scanner or not i've never really seen one set up with a cb before and i don't know if it help or how to put it all together