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Old 09-13-2006, 04:50 PM   #1
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How or where did you instal the antenna for a cb in your motorhome...I know I have to get a no ground plane antenna base and it looks like they are made for a side install instead of the roof...but how and where do you run the cable?

thanks
Jim
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Old 09-13-2006, 04:50 PM   #2
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How or where did you instal the antenna for a cb in your motorhome...I know I have to get a no ground plane antenna base and it looks like they are made for a side install instead of the roof...but how and where do you run the cable?

thanks
Jim
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Old 09-13-2006, 05:06 PM   #3
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If you get the ant that sticks on the glass it can go on top glass panel drivers side. Clean glass in and out. Mount near the "A" frame for windshield, take off cover to "A" frame and run coax cable down metal channel to under dash to your CB. Most MH's I have had, had single pane glass at top window.
Some say ant isn't as good this way but I never had a problem on two MH's picking up truckers or a group of fellow RVers in a convoy.
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Old 09-13-2006, 06:08 PM   #4
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Some through the glass antennas work OK. My experience with the one Camping World sells is to not waste your money. They won't tune in worth a darn.

Ken
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Old 09-13-2006, 06:54 PM   #5
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I Apologize if this is too technical: Recently after replacing my CB radio and not being able to tune it, I replaced the antenna with one from Radio Shack that was advertised as "no ground plane needed". As it turns out, they use a 6 dB attenuator at the CB radio end of the cable to reduce the SWR. What this means is that they lower the signal returning into the CB by 6dB (6dB loss = 50% power loss). Unfotunatley, they cannot reduce the return signal without doing the same to the transmitted signal. If you see a big coil on the CB end of the antenna cable, do not buy it. You are better off just grounding the antenna and settling for a mediocre SWR than a good SWR with no output (because of the attenuator).

Most rigs have the CB antenna mounted on the driver side just forward of the driver. Not on the roof because it would be too tall but above the driver window. This location would give you the best TX from 6 o'clock to 12 o'clock (not from 12 to 6 which would be the right side of the coach (assuming the front of the coach is 12 and the rear is 6).

Hope this helps.

-Tony
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Old 09-14-2006, 10:02 AM   #6
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Mounted mine on the drivers side mirror. Routed cable through mirror arm, and into front of MH. I then found a place with a rubber plug, and ran it to back of the center console where I mounted the CB. Works fine.
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Old 09-15-2006, 10:54 AM   #7
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I would recommend a Firestik II or FireFly, "No-Ground Plane" antenna. See: FireStik Company Can't give you the direct page, since they use Frames on their website. The FireFly is also a top loaded antenna, where the signal radiates from the top of the antenna rather than the middle. All of their antennas allow tuning from the top of the antenna.

There is no such thing as a "no-tune required" CB antenna. If you see one advertised as such, avoid it.

Mount it on the drivers side as near to the top as you can. Use any cabinetry to hide where it penetrations the side wall. Be sure to use a quality caulk. They also offer a roof mount, but the side mount is easier to seal.

Be sure to get the longest whip (antenna) that is reasonable for your application. The full wave length of CB antenna 36 feet, even a quarter wave is 9 feet. Thus a 4 foot whip is a comprimise.

Some people claim that dual CB antennas are better than single. The real difference is the shape of the radiation pattern. On a single antenna the radiation pattern is circular, with two antennas there are pronounced lobes perpendicular to the antennas and reduced radiation in-line. When the two antennas are mounted on the sides of a truck or motorhome this means there is better transmission and reception to the front and rear of the vehicle, but reduced sensitivity to the sides.

I am not affliated with FireStik in any way, but have used their products on several vehicles and have lots of Off-road friends that use them a lot.
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Old 09-18-2006, 04:47 PM   #8
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I mounted mine on the sidewall just behind the drivers left shoulder and as high as possible. I made an access hole inside the sidewall cabinet then ran the cable down the wall behind the front window curtain. The curtain is tied back just behind the drivers left shoulder in my rig. To protect the cable and to hide it, I installed some "Wiremold" style conduit down the wall. It turned out to be a clean install and not noticeable at all. For the hole inside the cabinet, I covered it with a blank double gang electrical box cover.
Hope this helps.
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