Splitpair
Premium
join:2000-07-29
Cow Towne
 ·T-Mobile US
| Wireless metallic connection help needed.
I have been volunteered to install a simple metallic connection from a vendors booth to a point where that booth can be monitored for security.
I need to relay a single contact opening or closing at the booth to the main building.
Now here are the rubs.
I am forbidden from installing any wiring what so ever between the booth and the monitoring point which is about 1500 feet from the booth so I must do it wirelessly if that is possible.
The booth has no permanent power the power will be supplied by a car battery that will have to be recharged as needed. Solar may be an option but not out of my pocket at this time. There is 24/7 power at the monitoring end though.
I cannot mount any types of poles etc at the booth I can install a standard vhf/uhf/etc vehicle antenna on the booth which is made of aluminum as some of the others have them for CC verification. I can install a antenna in the attic of the receiving location.
While I will receive many thanks for the work I will be doing the costs of doing it will be out of my pocket so I would like to keep that cost as low as possible.
FWIW I have tried a few commercial wireless alarm transmitters and receivers but they failed.
Any ideas?
Wayne
--
If you cannot fix it with a buttset and some beanies you ain't a technician. |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON
| I'm wondering if a wireless motion alert device like one of these can be adapated to accomplish what you're trying to do:
»www.smarthome.com/_/Sensors/Cont···nav.aspx
3000 ft range and only $159.
Don't you love how people "volunteer" you to do the impossible?  |
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alphapointe
Premium,MVM
join:2002-02-10
Columbia, MO
clubs:
 ·Mediacom
| reply to Splitpair
I don't have any links right now, as I'm at work, but you could use something that opens and closes a relay (toggle) upon a DTMF tone, and a device that sends said tone on contact open/close. Link the two with a VHF or UHF radio channel. You could probably do this with a small HT at the TX site and a scanner at the RX site. |
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Axilla
Finger, Finger
Premium,Mod
join:2001-03-26
Schofield, WI
clubs: | Exactly what I was thinking.
Or even better a tone generator on a sideband which would result in less possibility for interference. |
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jig
join:2001-01-05
Hacienda Heights, CA | baby monitor? |
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electric6
@ameritech.net
| reply to Splitpair
said by Splitpair  :FWIW I have tried a few commercial wireless alarm transmitters and receivers but they failed. Any ideas? Garage door openers, car lock remotes, wireless tv remotes have the required functionality. |
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Splitpair
Premium
join:2000-07-29
Cow Towne
·T-Mobile US
| reply to Splitpair
I think I found a solution.
»www.linearcorp.com/product.asp?p···SST00083
Wayne
--
If you cannot fix it with a buttset and some beanies you ain't a technician. |
|
