SZ123

30 meter range fm transmitter (use 2N3904 x2)

The Si472x is the first single-chip FM radio transceiver. The proven and patented digital architecture of the Si472x combines the functionality of the Si470x FM radio receiver with the Si471x FM transmitter, offering full FM receive and transmit capab...

From:http://www.21say.com/30w-fm-transmitter/
30W FM transmitter circuit board

30W FM transmitter circuit board

Camel 5W FM transmitter Gold Edition brief introduction
The transmitter from the motherboard, the control panel, display board at the three major components. Very easy to set up their own radio station. [...]

Parts List: R1 4K7 R4 150K R7 3K9 (2K7) R2 4K7 R5 220R R8 120R (82R) R3 4K7 R6 4K7 All resistors except R8 are at least 0.25W rated. R8 is at least 0.5W rated (the 0.6W metal film [...]

Use DC 1.5V, 1.5V FM Wireless microphone Transmitter, transmitting valve use 2sc2058.
Very easy to make simple wireless microphones.

5 watt FM transmitter amplifier
Use C3355,C2053,C1971
Frequency:88-108MHZ
DC:+15-20V

7cm*15cm
AMP-30watt fm transmitter amplifier design by camel fm(www.21say.com )

 
30Watt fm transmitter amplifier by www.21say.com

At last!- a stereo FM transmitter that's a snack to align.
This new stereo FM Micromitter is capable of broadcasting good quality signals over a range of about 20 metres. It's i...