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Increasing Transmitter range on Car Alarm

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=53666
Printed Date: July 07, 2025 at 5:43 AM


Topic: Increasing Transmitter range on Car Alarm

Posted By: haywireauto
Subject: Increasing Transmitter range on Car Alarm
Date Posted: April 10, 2005 at 8:57 PM

Hello, folks,

Just thought I'd share an idea that worked for me. I had problems with lack of transmitter range on my AEW/Delta car alarm (about 4 years old) as installed on my 1997 s-10. Previously, the best range I could muster (with new batteries in the transmitter) was about 20 yards.

I decided to investigate; found the antenna wire coiled up under the dash. I uncoiled it and it helped a little bit (up to about 30 yards). Realizing that the antenna wire needs to be fully uncoiled to be most effective, I gently tie-wrapped the entire length of the antenna to a 16" length of very very thin (about 1/8 inch) piece of wooden doweling. I then attached the end of the doweling to the side of the alarm brain, to provide support for the antenna wire. 

I replaced the unit under the dash, being careful to place the now-fully-extended antenna back high up underneath the dash.

Wow, what a difference. I can finally turn the alarm on or off from inside my house, and my line-of-sight range is at least 50 or 60 yards, maybe even more (I'll check next time I park at the shopping mall).

It worked for me, so I thought I'd pass it along.



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Cheers!
Ken in SSF CA



Replies:

Posted By: bretbowman
Date Posted: April 11, 2005 at 8:47 AM

Very interesting.  Thanks for sharing.  I would not have thought to use a dowel, but just straightening the receiver is probably what gave you the greatest increase to your range.

Good thought!



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2002 Toyota Sequoia Limited 2WD (Clifford G5 Avantguard 5 w/ 2 SmartWindows modules) - IT Engineer - NRA Life Member - LDS Return Missionary - Married for time AND ETERNITY - Eternally sealed family





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