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markr1001 04-03-2010 05:12 AM

CB help
 
ok so i bought a cb off of ebay last night, so now my question is what is a good length of antenna? i wanna mount it ontop of my tail light i think or maybe the rear door but i doubt it... also when you buy the antenna do you need to buy cable to go with it? or do they come with some? ive been lookin at the firestik brand and they look pretty good

rustywrangler 04-03-2010 05:21 AM

Get a 4' fire stick. And yes you need to buy cable for most.

markr1001 04-03-2010 05:27 AM

awesome! thanx

rustywrangler 04-03-2010 06:43 AM

Oh and don't fall for the "you need 18' of coax" myth. That has been busted time and time again. Get what you need to run a clean run with out tight corners or loops and then put the ends on. It is not hard to do.

larry408 04-03-2010 07:59 AM

1 Attachment(s)
I mounted my cb on top of the overhead gunrack in my YJ. I used a 12 foot cable and ran it up the roll bar tube. I mounted the antenna above the left taillight and ran the cable through a hole in the body with a rubber grommet in it.

Neo1130 04-03-2010 08:17 AM

Quote:

Originally Posted by rustywrangler (Post 9213741)
Oh and don't fall for the "you need 18' of coax" myth. That has been busted time and time again. Get what you need to run a clean run with out tight corners or loops and then put the ends on. It is not hard to do.

Depends on the ground plane being used. If you get a zero ground plane antenna, you must NOT mess with the length of the cable, PERIOD. I know this because I listed to someone that said the same thing you did and ended up not being able to get a signal in or out and my SWR was WAY off. A new fixed it all. However, if using the body as a ground plane, I will agree with the 18 foot thing being hype.

Stryker777 04-03-2010 08:29 AM

Yep, firestiks are great. Now for the 18' "myth". Electronic length is not a myth. 18 ft physical length is not electronic length. If you have full wave electronic length on your coax, your swrs will be easier to control. CBs are not as big of a deal as some radios because of the lower power and more importantly, frequency range. Still, coax electronic length makes a difference and if you co-phase, electronic length is most important. Otherwise your transmit patter will be all screwed up. I've worked on many AM arrays and length is not a myth, just the way most people relate it.

notmyj 04-03-2010 09:10 AM

I have a Cobra 29 st wx.http://www.4x4rockshop.com/ProdImage...br29wxnwst.jpg
Here is how I mounted my antenna and such....

I used this antenna mount...
http://www.gijoesradioelectronics.co.../mt3mirfir.jpg
from GI JOES CB RADIO - Mirror Mount w/stud - Cb Radios

I used this wire http://www.gijoesradioelectronics.co...ni8screwon.JPG
Link to it.... GI Joe's Radio Electronics - Cb Radio Coax Cable

And this Antenna.... http://www.gijoesradioelectronics.co...lassWhipSm.jpg
GI JOE'S - Cb Antenna - K40 Super Flex Cb Radio Antenna

A little more explaination...... I used the K40 super flex, 4ft, black. (See link above, I ordered all my stuff from them and have nothing but good things to say.)

The mount is a mirror mount that I made work on my jeep. If you dont mind drilling a few holes. The wire has a removeable pl259 plug on one end so it is easy to fish through holes etc. I got a grommet package from radio shack will fit it perfectly. My wire was 12ft, and it just fit from the mount to the radio under dash. It works perfect for an overhead console though.

The K40 Super Flex, is the abolute best for an offroad vehicle. They flex and bend like crazy and will not break. THey are not as rigid as the fire sticks I used to own. I went through a couple of them. THe K40 gets my vote every time. ETA: the only thing I have changed is a spring mount for the antenna.

Here are some pics of how I mounted my stuff.



The whole thing mounted up...
http://img.photobucket.com/albums/v7...9/CIMG1165.jpg

Up close, you can see how I used the mirror mount, and how small the hole needed to be for the cable I mentioned above...
http://img.photobucket.com/albums/v7...9/CIMG1166.jpg

What the mount looks like from the inside....
http://img.photobucket.com/albums/v7...9/CIMG1167.jpg


A simple demonstration of the K4o Superflex.....

http://img.photobucket.com/albums/v7...9/CIMG1168.jpg

markr1001 04-03-2010 02:37 PM

nice ok i bought an antenna off ebay today, it has a mirror mount and i figure i can make it work. it comes with 9' of coaxle cable... how much do people usually use to run that span? is it just regular coaxle cable that you use? if so i wav some of it i can cut up and put some ends on...

RdNekGABoy87 04-03-2010 03:36 PM

Right Channel Radios has a pretty good guide for installing your CB, mounting your antenna, tuning, and quite a few other commonly asked questions regarding CBs. I used their guide to install my first CB and i have had no trouble with it at all.


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