viper 791vx remote range
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=93316
Printed Date: May 20, 2024 at 7:39 AM
Topic: viper 791vx remote range
Posted By: bisdhawks25
Subject: viper 791vx remote range
Date Posted: April 25, 2007 at 12:50 AM
just put a viper 791 in, and the range blows...it only works from like 150ft. away..........i tried straightening out the antenna wire, and moving the antenna from behind my front window tint and put it down low, and it still blows...is it just a viper problem, or can i try anything else to get better reception? other people say they really like theirs, and others are like mine....why are they different? what can i do to help mine? thanks
Replies:
Posted By: Twelvoltz
Date Posted: April 25, 2007 at 7:37 AM
Make sure that your system ground is to a paint/primer free piece of metal in the kick panel, not to a factory bolt and not to the under dash metal.
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Installer, IT support, and FFL. I need less hobbies.
Posted By: creed2k
Date Posted: April 25, 2007 at 10:27 AM
or get the viper 5900... the range difference is amazing... i had the 791xv and got the 5900 cause of the lack of range, it works about 4 times as far as the 791 does... and its a lot better thru walls, etc.
Posted By: kgerry
Date Posted: April 25, 2007 at 4:25 PM
you should expect about 1500' consistently with the 791... about 4-5000' consistently with the 5900
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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: johnmax
Date Posted: April 26, 2007 at 9:53 PM
Twelvoltz wrote:
Make sure that your system ground is to a paint/primer free piece of metal in the kick panel, not to a factory bolt and not to the under dash metal.
You know I always hear this, but in 16 years I have never understood how grounding to a factory bolt could be worse? There is more surface area in those threads than necessary for a sufficient ground. Alot of times the factory grounds the same way. And you have a bolt which will most likely never loosen, opposed to a self tapping screw which has a greater chance of loosening or not being secure in the first place. Who really scrapes the paint away in the kick for an alarm install? I doubt many do. Not meaning to contradict you Twelvoltz. If you have more insight on this I'm all ears. I like to learn new things and if theres some theory on this I'd love to see it.
Posted By: enice
Date Posted: April 27, 2007 at 12:26 AM
Youd be surprised on who does. You even are supose to use a washer along with sanding the paint off.
Posted By: kgerry
Date Posted: April 27, 2007 at 4:53 PM
the cross braces under the dash are bolted to the chassis sub-structure and over time these connections where the bolts mount can oxidize or worse come loose.... i have metered the cross members on a chev truck with the vehicle off and gotten 15-20 ohms resistence to ground (it should be about 1 ohm!), and with the vehicle running had 150 ohms resistence at the same point... yet going to the metal in the DKP brought it back down to 4-5 ohms running.... a huge voltage differential !! i always go directly to the metal right in the DKP now to avoid having to troubleshoot a range issue 2 or 3 years later..... ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
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