Friday 24 January 2014

FM Transmitter 6 Watts

Below is the versatile FM Transmitter build around car MP3 player ,which can deliver up to 6 Watts.In this circuit RF signal is taken from a MP3 player built-in low power transmitter, it is than boosted by the two more RF stages ,For making any RF transmitter circuit at least two meters are very necessary , one is frequency counter & the other is RF field strength meter.In the first stage of transmitter one of the best driver transistor 2SC2053 were used .you can use the other transistor up to 500MW power for this stage.In the second stage another RF transistor 2SC1971 were used.also you can use any equivalent transistor. Note : L3 will be 4 turns , L6 will be 12 turns, Heat Sink required for 2SC1971 (C2053 can be used ).
RF field strength meter also available below, up to 3 different circuit i have tested photo added.

https://obaidkakar.blogspot.com/2019/10/fm-transmitter-25-watts-88-108-mhz.html

arduino-gsm-jammer-900-mhz










                                   

https://obaidkakar.blogspot.com/2018/08/arduino-fm-radio.html AliExpress.com Product - 5pcs 2SC1971 C1971 TO-220 35V 2A AliExpress.com Product - 10pcs/lot 2SC2053 C2053 TO-92 NPN transistor, VHF RF amplification


RFC COIL: 0.68 uH



 Authentic Original
AliExpress.com Product - 100Pcs Multilayer Chip Inductor 0805 68nH 5% 2012 AliExpress.com Product - CJMCU-4713 SI4713 Stereo FM Transmitter





AliExpress.com Product - Car Bluetooth FM Transmitter MP3 Player with 1.1" Display Dual USB(1A/3.1A) Supports TF/USB Input Radio Modulator Car Kit