[updated:LAST EDITED ON 17-Feb-02 AT 06:38 PM (EST)]Roof Mount (magnetic),Trunk Mount(set screw attachment) require stringent thoughts.
If it was me I would attach a ground strap to the trunk (the photo you provided and attach it to the body of the vehicle plus,scrape a small amount of paint to allow the set attachment screw a good ground.
You have what is called a "Base Load" antenna.
The base should be mounted as high as possible on the vehicle.
A base load on a truck should be in the form of a magnetic mount for the ROOF.
Attaching a base load antenna so that the cab interferes with the signal is lowering performance.


Rules of Best performance:

1)Proper Match Antenna to radio(swr)
2)Proper and secure grounding of Radio & Antenna.(find un-painted metal)
3)The *LOAD* of the Antenna should be as High as possible on the Ground Plane. ie: roof mount
4)Know about your system > The Most powerful strength signal goes out the longest part of ground plane; ie: rear mounted antenna> The best signal goes out the Front of the vehicle(ground plane)<>antenna on the front of vehicle > the best signal goes out the rear of the Vehicle.
Center mounted antenna> The signal goes out the front and rear of vehicle equally
The signal out both sides is equal to each other.

I hope this clears up your question.

Dual-antennas are slightly different in performance.


Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon

 

the mounting plates i have for my whips are a 5 hole bolt mounting type of job. you drill 5 holes in the same patern somewhere on your vehicle, then match it up to the plate, slip some nuts and bolts on, and voila antenna mounted. as far as grounding goes, there is a small screw (in order to hook the antenna to the coax cable you have to cut the end plug off, and take the ground wire off from around the other one) and the ground wire just wraps around the screw, right on to the mounting plate.... its prety simple although it is kind of hard to describe here with no pictures. anyways, its something my friend thought up from what they are selling down at the local Radio Shack (those folks don't know much about radios except you push the button and talk into them, heh heh) anyways these kind of brackets are really nice especially if your mounting on a truck behind the cab.....go real easy onto the edge of your bed.
Mike S.
1979 F-100

 

I have an almost brand new CB Cobra and antenna I want to get rid of. It was about 250.00 new and also a k40 mag antenna. Don't need it anymore. Its only been used about 10 times.

 

FYI:
Although it's been awhile, there used to be a real good CB shop at the Shell truckstop in Holbrook, AZ, and another one at Sapp Bros. truckstop (Exit 1) in Council Bluffs, Ia. I was just in Sapp Bros about a month ago.

Trail Rider

 

hey,
thanks alot for all the info guys, it is much appreciated and useful!
Mike S.
1979 F-100

 

I run a Super Star 121 radio and have for years. I have used Wilson and steel whips and there about the same compared to each other. I dont know if you know it or not but cb linears are not illegal, as long as you dont transmit on them. I use a Palomar 600SL. With this combo I have done some weird stuff over the years.

 

hey,
what are linears? i havent ever heard of those before, what exactly do they do and all?
Mike S.
1979 F-100

 

Linear amplifiers. POWERRRRRRRR !

My term was "Push and Pull" >Bi-Linear amplifier<



Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon

 

ah, i see. thanks for the clarification . now to the important part, how do i go about gwtting my hands on one of these?
Mike S.
1979 F-100

 

I don't know if you can afford mine.
E-Mail me direct.


Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon

 

Basically a linear is a power booster that goes inline between your radio and antenna. Last I heard they were going for around $1.25 a watt. Now that we've got that clarified, I'm confused

Why would you want a piece of equipment you can't transmit over?

Trail Rider

 

I used mine back in the 70's for emergency use.
It's legal for that reason.
I used to say " It's For the Convincing Break"

We have mountains in close proximity to Calgary.
In 5 years I had participated in at leats 7 search & rescue incidents for lost children,accident victims,lost animals,rescue of snowmobilers.

I have a 200 Watt Push & 400 watt pull Bi-Linear amplifier just for this reason.

That's why I have one.

To *Get out* and *Pull Them In*.

Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon

 

>I've run a radio in every car/truck I've had since '77. My
>favorite radio is a 23 channel Browning "Brownie". I use it
>when I'm on the road mated to a 5' Firestik. When I bought
>my wife her '94 F150 I needed a small radio cause there was
>really no place to mount one. I ended up buying a factory
>reconditioned unit from a radio shop, and part of the guy's
>service was to turn up any radio he sold. It puts out about
>18 watts, the only problem is the mic's on these radios is
>junk from the factory, the good thing about them is a 4 pin
>Cobra/Uniden mic fits and works perfectly. It's a Uniden Pro
>510 XL (I don't care for all the extra ***** and switches).
>Since then it's been moved to her car (95 Eagle Vision) and
>mated to a K40 whip. Since that first Pro 510, I've acquired
>two more, one of which is in my '93 Ford F250 mated to a 3'
>K40 whip, and the other is my "spare" when I'm on the road.
>My '72 F100 has a Cobra 21 GTL that has also been "tuned
>up".
> I agree with being irritated with all the noise and bs on
>the radio, and I know alot of folks shut their radios off
>(even truckers), but I also like to know as much as possible
>about what's going on out on the road when I'm out there. I
>guess I'm just a die hard when it comes to running a radio.
> You probably can't figure out my handle either (ha ha)
>
>They call me Trail Rider when they ain't mad at me - I'm
>headed for Mama's house. Bye Bye!
I have a Galaxy 55 (cliped and peaked) With a Texas Star H.D Box ,with an external speaker. I have a D104 power mic. and Wilson 5000 Antenner Handle >Diesel

 

i have a cb in my F350 XLT dully but i only get on it when i need to know what is in front of me or where i could avoid traffic.

 

Until we can buy Hover craft (like the Jetson's) you'll never avoid traffic.

Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg



Please Don't Ask Me Any Tough Questions,
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver, Explorer Pkg.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon