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More than Circuit EngineeringEspionage. The FM radio transmitter with the power supply 220 V
Espionage. The FM radio transmitter with the power supply 220 V
Working range of frequencies is 30 MHz. Distance of action 100 – 200 м. The coils L1 and L2 are winded on framework. Diameter of framework is 5 mm. Diameter of core is 3.5 mm. The coil L1 - 10 coils. The coil L2 – 2 coils of the wire ПЭВ 0.3. The chokes Dr.1 and Dr.2 - 100 coils of the wire ПЭВ 0.1. Coils winded on a magnetic core. Diameter of core is 2.8 mm. The condensers C1 and C2 must be counted on a voltage no less than 250 – 400 V. A power network 220 V is used as antenna (aerial).
The elements of device are found under voltage 220 V.
Circuit of the FM radio transmitter with the power supply 220 V
Literature: Magazine Радиохобби №3 1999.
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