external antenna with alarm system
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=127281
Printed Date: May 13, 2025 at 12:48 AM
Topic: external antenna with alarm system
Posted By: reaphx
Subject: external antenna with alarm system
Date Posted: May 09, 2011 at 9:53 PM
I am a ham radio operator so I have several antennas mounted into the roof of my truck. I will soon be buying a viper alarm system... I'm wondering if anybody has ever had an external antenna for their alarm system?
I know it would be a point of failure since anybody can remove the antenna by hand. I would torque the antenna down so you can't remove it without tools.
Nobody is going to see a quarter wave 900mhz antenna on the roof of a lifted truck anyway.
Replies:
Posted By: reaphx
Date Posted: May 09, 2011 at 9:53 PM
My truck is a 2008 Toyota Tacoma double cab with a 3" lift and 33" tires.
Posted By: howie ll
Date Posted: May 10, 2011 at 2:37 AM
In theory its fine the antenna to use would be a European GSM because we use 900mhz, the US uses 850mhz. In practice the extra gain isn't worth the effort.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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