1.5 Km Single Pipe FM Launching Circuit

Published:2011/6/22 5:04:00 Author:Michel | Keyword: 1.5 km, Single Pipe, FM, Launching Circuit | From:SeekIC

This circuit is 1.5 km single pipe FM (FM)emitting circuit.Emitting triode uses D40,D50 and 2N3866 and the work current is 60-80mA.But the aboved triode is hard to buy and the price is high and fakes are more.The author chooses other transistor to make experiments and the C2053 and C1970 is rather good.The actual horizon communication distance is over 1.5km.The author also has had changed the D40 tube into ordinary transistor 8050,its work current is 60～80mA but the emitting distance is less than 1.5m.If it is altered into 9018,the work current is much lower and the launching distance is shorter.



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