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Absconditus

  • Date Joined:Dec 31, 2008
  • Instructables:1
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2 comments
Oct 15, 2009. 4:01 PMdsesmg says:
Hi, I need to make some kind of a long range remote radiotransimtter and receivers.
The distance is 500m and the location is in a building.
I must notice 5 people simultaneously when I push some button on atransmitter. So, five people are carrying the receivers and they willnotice beeping sound from the receiver when the transmitter activates.
I thought the radio signal is the only solution to acheive it activatedfor this long range and in a complex location like a building. Could youplease help me how to acheive this? All I need to have is just thefunctionality to notice multiple people simultaneously by pressing abutton of some device.
Will bluetooth do that?
Feb 2, 2010. 9:50 PMMalleusDei says:
Bluetooth would most certainly not work for this. 30 feet (about 10m) is pushing the maximum range, so you would need something significantly more powerful. You would definitely need a short wave radio, but since you are mentioning something about being in a building try WiFi. If the building is Wifi Blanketed you could certainly have an application written to handle this functionality.
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