Thread Tools Search this Thread Display Modes
Old 12-23-2014, 08:34 AM   #1
2 Rivet Member
Sarasota , Florida
Join Date: Sep 2011
Posts: 38
Unhappy No 12 voltage at roof mounted antenna

While at an AS rally last Nov I wasn't receiving tv signal thru antenna. Unit members came to assistance. Connected my TV to another camper via long coax connected to his antenna, TV received signal. Short point of diagonisis is I am not gettting voltage to connection point at antenna .
Has anyone replaced the coax cable from the wall outlet thru the skin to the roof? What is involved?
The trailer is a 95 34' classic.

DavidSowder is offline   Reply With Quote
Old 12-23-2014, 10:27 AM   #2
Rivet Master
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,592
Of course it could be the cable, but I first would check the power supply system behind the antenna outlet with the switch on it. They are a cheaply made device and you are likely to find the problem there with a fuse, or broken connection to the wire which runs up to the antenna.

idroba is offline   Reply With Quote
Old 12-23-2014, 10:27 AM   #3
Rivet Master
SteveH's Avatar
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,286
Before I tried replacing the coax, which would be a major PITA, IMHO, I'd double check there is 12 volts output from the antenna/cable switch when the button was pushed. There is a solid state devise in there that can go bad, and I would suspect it being bad before I would suspect the coax cable.

"To compel a man to subsidize with his taxes the propagation of ideas which he disbelieves and abhors is sinful and tyrannical."-- Thomas Jefferson
SteveH is offline   Reply With Quote
Old 12-23-2014, 11:18 AM   #4
Rivet Master
HowieE's Avatar

1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,322
Images: 12
If the power supply is putting 12 volts on the coax check the connection under the mounting plate on the roof. I have seen that connection on that end of the coax deteriorate. If so you may have enough cable at that point to replace the connecter.

It is not likely that the cable itself could go bad within the walls.
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is online now   Reply With Quote
Old 12-23-2014, 03:42 PM   #5
2 Rivet Member
Sarasota , Florida
Join Date: Sep 2011
Posts: 38
The power devise is ok, even replaced it with a new one a fellow AS'er had on hand. Has anyone tried to remove the antenna mounting plate from the "skin" on the roof? The large phillips head screws won't budge, the plate has been adhered with some fantastic sealant that appears to be impossible to "loosen". Also appears there is a backing plate underneath it that could dislodge from the underside of the skin/roof and be difficult to get to to refasten unless the interior liner is removed for access.
The damn thing used to work fine. I installed a Magic Jack antenna and was getting great reception.
Have removed some of the caulk that seals the coax penetration. It appears to have no room to move the coax due to an impingement between the roof skin and the mounting plate.
Thanks for your replies.
DavidSowder is offline   Reply With Quote
Old 12-23-2014, 06:17 PM   #6
Rivet Master
Al and Missy's Avatar

2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 1,483
I pulled mine, but it won't be of much help to you. Mine was just screwed into the skin with sheet metal screws and the caulk was cracking. Pretty easy to remove. There was a connector just inside where the coax disappeared into the antenna base, but I don't know if it was original.

If you replaced the original antenna, a typical problem with short pieces of RG-6 and RG-59 cable is that the center connector will move inside the insulation. First thing to check is to be sure that the center connector is sticking out to at least as far as the edge of the screw ring. Be careful when you insert it into the antenna that you get it inserted into the female part of the connector on the antenna. I have had cables with this problem that have worked for months and then suddenly quit.



"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
2001 Safari 25 RB Twin (Gone, but not forgotten)
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote

12 volt

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Antenna Removal & Replacement with Cell/Wifi Antenna BoldAdventure Electronics & Connectivity 9 07-04-2016 07:27 PM
Installing a roof mounted AC on '66 Caravel. Y or N? powayproduct 1966-68 Caravel 11 10-08-2013 11:14 AM
Roof Mounted Direct TV Dish Zigidachs Audio, Video & TV 8 10-21-2010 03:01 PM
Roof mounted spot light Robfike Classic Motorhomes 14 05-12-2008 06:51 PM
Adding Roof Air & New Voltage Regulator to Our 1976 24 T AndyPenny All Argosy Trailers 5 12-24-2007 01:02 PM

Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:58 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.