Land Rover and Range Rover Forum banner
1 - 15 of 15 Posts

·
Wheeler
Joined
·
1,843 Posts
Discussion Starter · #1 ·
Good morning all. I tried some searches but couldn't find much info on CB radios. I am looking to put one in my DII & wanted to know if you all had any recommendations on a radio, installation, antenna installation, etc etc.

Your experiences/advice appreciated. Thanks
 

·
Registered
Joined
·
1,818 Posts
If you can get a remote unit i.e, one where the head unit is separate from the main body, is the way to go. With this set up, you can mount the head unit in areas where you don't need a lot of room. Example follows:-
 

·
Registered
Joined
·
1,818 Posts
Sorry I forgot to mention.....the installation is very straight forward, but you will need to be careful how you wire it. If you wire it direct to the battery, you can use/listen to it with your ignition off, however, if you forget to switch it off.... The best way is to wire it to accessories. My antenna is gutter mounted and find it works just fine, although, you will no doubt hear from the puritans who perfer mounting the antenna in the middle of the roof, this usually involves drilling a hole in it.
Hope this helps.
 

·
Registered
Joined
·
294 Posts
i got a cobra unit of ebay, cobra rocks, yjr antenna i got is a firestick with a tuneable tip really works awesome check out www.gijoeselectronics.com the guy there is super cool if you have any questions email him he ll actaully get back to you, this day and age you dont come across that to often, dont forget an swr meter, fast shipper, good luck.
 

·
Registered
Joined
·
294 Posts
i got a four foot antenna and i m like disco, i mounted mine on the rear bumer i still have fantastic range, the tip of my antenna stands one foot above the roof of the truck, i have been told and told that the way i have it is wrong, but hey it works well for me so far.
 

·
Registered
Joined
·
238 Posts
Disco here is how to get the best of both worlds.

Sorry very crude drawing and please excuse the spelling error i'm just to lazy to fix it.(People say that lazyness is a curse but I am here to tell you you have to work at it.)
People may wonder why this could be of an advantage. Well I am very forgetful when it comes to turning of my radio's at the end of the day so now 98% of the time they run on the acc circuit of the car I turn the car on and the radio's come on I turn off the car they turn off but in those circumstances that I need them on when the car is not running I can flick a switch and they come on independent of the ignition. This type of circuit can be addapted to allow your ignition acc wire to run or turn on accesoris and run them of the aux batt keeping all aftermarket accesories seperate of the origional wiring. this is very handy for forgetful people such as myself.
Adam
 

·
Registered
Joined
·
674 Posts
Hmmmm...same as LRR219....Cobra, actually the 75 model (handset is everything) with a steel 5' whip on the roof. THis gives a very small "footprint" in the vehicle - I put the unit under the seat - used the cell phone wiring as I have taken it out.


Works like a charm.
 

·
Premium Member
Joined
·
1,033 Posts
Some help here......

Hello from Adam in NYC (also a ham with the callsign Kb2Jpd)

Quite a few auto manufacturers publish guidelines or actual instructions regarding mobile radio installations. Since I have not seen any for Land Rovers, I would add these pearls of wisdom.

Plan out exactly where you are going to place the radio.

Some have placed their two-ways in the above space in front of the sunroof. Others in the dash or the space behind the shifter. Still others install them out of the way in the elbowrest.If you are going to change the channel frequently, you might want the radio closer to the drivers position so you wont have to leave your gaze of the moving landscape when you drive.

The most thing about the radio installation is that it does not block your vision and that the radio is very secure in the cockpit and won't break loose,hurt or injure you or any occupant in the vehicle.

Use as much of the power wire as necessary , add additional power wire of the same guage or larger if necessary and make sure to fuse both the positive (red)and the negative(black) wires. In older vehicles, the body welds and electrical connections will corrode and there will be voltage differentials. If you lose the negative lead, the radio will still operate but the ground connection will be coming from the antenna. You may expierence a shock or the radio will malfunction if that happens. Some people will stay you have a buzzy noise on the transmitted audio. It could be that. Choose if you want a direct connection to the battery or if you want a switched connection using a power relay connected to the switched side of the ignition key.

The antenna installation is next. ARB sells antenna mounts for the front bullbar if you have it installed. You can install those 3/4-24 thread mounts on the front if you like. Some other choices include using magnetic mounts. (The top of the Discovery is magnetic but not the sides).Some others even reuse the tire mount in the back and install an extension if you need to clear the top of the Discovery. In that case, look at the Hustler line of antennas and check out their short antenna masts.

My personal favorite is how some people reuse the antenna hole in the passenger fender for an antenna installation and then you can buy a box (splitter, duplexer) that lets you split the antenna for CB and car stereo use. What kind of antenna to put in its place? Larsen , Antenna Specialists, and Comtelco all sell antennas suitable for fender use or magnetic mount use(you need the antenna for CB 26-31 Mhz range, then you file and prune for lowest standing wave ratio).

If you want some example of antenna and antenna mounts here is a catalog in PDF form from AES:

http://www.aesham.com/pdf.html

I hope I was some help.

Adam :drive:
 

·
LRO Founder
Joined
·
2,006 Posts
You can also wire a capacitor in line with the power wire from the CB. A capacitor stores and discharges electricity. Depending on the size capacitor will depend on how much time you will have for your CB after the ignition is shut off. You can get one that will give enough juice for, say an hour. The capacitor can be wired to be charged by the car battery when the engine is running. It charges almost instantaneously.

When the ignition switch is turned off, the capacitor will supply power to the unit (CB in this case) for a specified amount of time (based on the size of the capacitor and the draw of the CB.) Then it (capacitor) will run out of juice, power down and you won't have a drain on the battery. You could forget to turn the CB off, but the capacitor will be powering it, not your car battery.

Serg
 

·
Premium Member
Joined
·
1,033 Posts
Capacitor for powering the CB?

I dunno, Serg. Any capacitor big enough to power a CB will be costly to say the least(99-150 American dollars). A 1 Farad capacitor (used for high power audio ampilifers for momentary surges) would work on receive for about 30 seconds before fully discharging. When you turn on the radio, that same capacitor on the switched side will look like a short and may end blowing the fuses.

There are those boxes that you can put in the power line for the radio. I don't know the name but they look like circuit breakers. They open up when the voltage from the battery drops below 10 or 11 volts so you don't run fully down the auto battery.

There are several solutions available if you want to operate the radio with the motor off. You can look some circuit diagrams using Google. My favorite is using several relays you can have the radio work until you open the drivers door. Neat.
 

·
Wheeler
Joined
·
1,843 Posts
Discussion Starter · #13 ·
Or, w/ a dual battery set-up you could just run it off your winching battery, right? Great info guys---thanks. I'm not sure abou the front-bumper mount only because I get slammed with a lot of tree branches on tight trails. Sounds like I have much reading to do on this subject and will have to add it to my never-ending list of add'l mods.
 

·
Premium Member
Joined
·
1,033 Posts
Should not have to worry about it........

SCSL said:
I'm not sure abou the front-bumper mount only because I get slammed with a lot of tree branches on tight trails. Sounds like I have much reading to do on this subject and will have to add it to my never-ending list of add'l mods.
You don't have to. Most all small and mid-size antennas can take the punishment. Just use something sturdy. If you are looking about, most photos of mobile installations are on the front bullbar, especially Aussie and African units with heavy duty bullwhips.

BTW, I am working on a 33 foot HMMMV flexible antenna on the rear mounted on the hitch.

Want to see a rear install?? Check out Eriks Barrow's website:

http://www.erikburrows.com/index.php?node=My+Truck

Want to see more mobile installs (thank you Google):

http://www.google.com/search?q=land...ient=firefox-a&rls=org.mozilla:en-US:official

Nice pearl of wisdom here about the Discovery:

http://www.eham.net/reviews/detail/3304

and I quote:

"I installed the aerial on a especially made mouting bracket that I made for my 4x4 (Land Rover Discovery) much in the same way that A45AZ made for his, as described in RadCom, 2004. (Although the bracket I had made was different as I effectively bolted a piece of 1.25 " box section steel, and made a bracket to mount a 3/8's stud mount onto the baracket).

With the supplied whip, I have made many contacts at the 1-2,000 Mile range, while lirerally mobile (driving to work etc).

Secondly, I have added a 9 foot CB Whip to the installation for "Static" mobile operations and this improved the performance dramatically.

As with all mobile HF installations pay careful attention to earthing the system. I installed a length of Copper wire (which comprises of 7x47x8 Strands of Copper Wire. The stuff they sell to the guys who like putting 500W audio amps in their cars....) each end of this Copper wire was fitted with a half inch diameter gold plated spade connector. (Soldered on as well as crimped) and bolted with a Brass Nut and Bolt to the Chassis of the vehicle. Its length is 4 Metres.
At the base of the mount I have fitted a Banana socket, to which I can attach pre-measured radials (3 for each band). This again has dramatically improved performance, when static.

(Note I work away from home during the week, and enjoy being on air when not working or lounging around in front of a hotel TV....further plans include running RTTY /M !!! and SSTV /M that will be fun !)"

Adam :drive:
 

·
Registered
Joined
·
5 Posts
car antenna , fm am antenna

CB Antennae, Antenna Mounts, GPS/GSM/AM/FM Multifunctional Antennae, GPS/GSM Antennae, TV/T-DMB Antennae, AM/FM Antennae, Dummy Antennae, Antenna Accessory, Connector, CB Radios, Antenna Manufacturer

Challenger communication equipment Co., Ltd. was formed in 2003 and over the past years have grown to be the Ningbo's leading manufacturer and exporter of Communication Antennae. We specialize in the design and manufacture of Antennae, Antenna Mounts, accessories etc.
Our workshop covers an area of 4000 square meters, and we are currently exporting almost 85% of our production. With well-equipped facilities and excellent quality control we have attained CE and ROSH certification for our production. Our experienced R&D team actively expands our product range to meet our customer’s demands and welcome OEM and ODM orders.

We have built up an efficient management system to provide you with our best service, with good quality parts , competitive price and short delivery, have been marketed into Europe, Middle East, North America and other areas.
More details please visit our website. Challenger communication Equipment Co., Ltd.
We are looking forward to make a good cooperation with you

Challenger communication equipment Co., Ltd. We specialize in the design and manufacture of Antennae, Antenna Mounts, accessories etc.
Http://www.acmeantenna.com
CB Radio
CB antenna
antenna mount
multifunctional antenna
GPS antenna
car antenna
TV antenna
FM/AM antenna
Dummy antenna
antenna accessory
antenna connector
 
1 - 15 of 15 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top