range 433 vs 900mhz

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h3ng

Member - Posts: 4

Joined: January 25, 2007

Posted: January 27, 2007 at 6:32 PM / IP Logged

The viper 791xv is rated at 433mhz while the compustar 2w900fma is rated at 900mhz.

what real world differences should i notice? they seem to go for about the same price with comparable features. some people claim they can get 1000' with viper while others complain saying they only get like 150'.

i currently have the viper 791xv, but if the compustar's range is a lot better...i might be worth the switch and sell mine and get the compustar.

h3ng

Member - Posts: 4

Joined: January 25, 2007

Posted: January 27, 2007 at 6:35 PM / IP Logged

oh, i have it...but it's not installed yet.

waiting on a transponder...is the 556u good? or do you recommend something else?

imseth85

Copper - Posts: 71

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Joined: November 16, 2006

Location: United States

Posted: January 28, 2007 at 1:17 AM / IP Logged

Go with the viper....it's such a nice unit and it is a dream to install. Also it is more reliable in my opinion. The viper has great range, just mount the antenna up on the windshield by the headliner.

Seth Alvo NY

Mobile Electronics Installer

imseth85

Copper - Posts: 71

Joined: November 16, 2006

Location: United States

Posted: January 28, 2007 at 1:17 AM / IP Logged

go with the 556u too, it's also good.

Seth Alvo NY

Mobile Electronics Installer

hawn13

Copper - Posts: 171

Joined: April 13, 2005

Location: Hawaii, United States

Posted: January 28, 2007 at 1:35 AM / IP Logged

I've installed both no difference in install I personally like the compustars better alot better reliability I think dei tried to come out with their 2 ways to soon to try to keep up with compustar. the 556u will work fine what are you putting it in?

h3ng

Member - Posts: 4

Joined: January 25, 2007

Posted: January 28, 2007 at 1:46 AM / IP Logged

will be installed in a 07 camry le.

hawn, did you think the range on the compustar is a lot better? or are they both about the same. i have the viper now, so i would need to resell the viper and purchase the compustar. think the effort is worth it?

hawn13

Copper - Posts: 171

Joined: April 13, 2005

Location: Hawaii, United States

Posted: January 28, 2007 at 2:02 AM / IP Logged

Personally range is better on compustar if already have the viper go for it might be to much of a hassle trying to sell it then getting a compustar.

jayno20

Copper - Posts: 76

Joined: December 14, 2006

Location: United States

Posted: January 28, 2007 at 11:19 AM / IP Logged

get the viper 5900, its the same unit as the 791xv only with a mile range, and i've had both the 791xv and the 5900 and i notice a HUGE difference in range with the 5900

kgerry

Platinum - Posts: 3,455

This member consistently provides reliable information

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: January 30, 2007 at 4:25 PM / IP Logged

i second that...... go with the SST Responder unit (5900, 50.5X, etc)

Kevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

JWorm

Platinum - Posts: 2,208

Joined: December 11, 2002

Location: New Hampshire, United States

Posted: January 30, 2007 at 4:50 PM / IP Logged

Selling a used 791xv with all cut up harnesses is going to be hard. If you do manage to sell it, you won't get much money for it. If you get a 5900 you will just need to swap the brain, antenna and remotes. You will then have a new set of harnesses to put with the 791 which you can then sell.

In most cases the Compustar 2W900FM will get better range than the Viper 791. Both systems can pick up interferance at certain locations which can kill range. I have a 2W900FM in my car. At my work I get about 20 feet of range. I brought my father's truck with a 791 to work with me today and it got over 600 feet. I didn't test it any fiurther than that. I have been in the mall over 800 feet from my car and my 2W900FM has worked. I know a Viper 791 wouldn't work from that range inside a mall. Lots of things can effect range.

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