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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > tranciver & reciver (rf)
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Author Topic: tranciver & reciver (rf)  (Read 5386 times)
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hamid9543
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« on: March 18, 2007, 08:12:17 08:12 »
hi
i want to make tr & re   rf   for 200meter distance.
i need to your help . can you help me?(shematic or .....)
thanks
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hate
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« Reply #1 on: March 18, 2007, 11:43:44 11:43 »
You can try to find a powerful fm transmitter & a receiver and modify them for your frequency. Then use lm567 tone decoder for digital communication or lm331(or similar) for analog!

Regards...
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cipiloi
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« Reply #2 on: March 18, 2007, 07:32:50 19:32 »
For digital or for analog signals?
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hamid9543
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« Reply #3 on: March 19, 2007, 06:53:16 06:53 »
hi
thanks for your replay!
rf remot control wih relay output up to 200m
best regard
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cipiloi
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« Reply #4 on: March 19, 2007, 01:04:54 13:04 »
http://www.lprs.co.uk/main/product.info.php?productid=154
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cipiloi
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« Reply #5 on: March 19, 2007, 01:10:26 13:10 »
http://www.electrome.fr/produits/produits/Em_rec/aurel/FM_FSK.htm
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rinderpest
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All machines are amplifiers
« Reply #6 on: March 20, 2007, 10:33:52 22:33 »
I just got a couple of these:
http://www.maplin.co.uk/Search.aspx?criteria=vy48&source=15&SD=Y
They are 433Mhz Tx/Rx pairs for £9.99, so for full duplex 2 sets are required. They state 70m as range but with a 1/4 wavelength antenna 300m+ can be achieved. They look similar to the others, thick film hybrid SIL package etc. Data rate is lower at ~2k/s. Easy to use; TTL or CMOS logic level input & output, no control or handshaking required.
Maplin are fairly quick & reliable for mail order. (I dont work for them btw, they suck for components - almost no selection and pricey ie 17p for 1 resistor!)
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Experimentum solum certificat in talibus. 
     Experiment is the only safe guide
hamid9543
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« Reply #7 on: March 23, 2007, 06:54:10 06:54 »
thanks for replay.
you helpme very much.have you info about pt2262 &pt2272
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