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FM Telephone Transmitter
Posted on Thursday, March 24, 2011   •   Category: FM Transmitters

FM Telephone Transmitter

The FM telephone circuit is built on a PC board that is so small it can easily be fitted inside the housing of a telephone making it an instant pseudo-speak earphone. This FM transmitter circuit connects in series with telephone line, steals power from it, and transmits both sides of the conversation to an FM radio tuned between 90 and 95 MHz.

     Basic FM Transmitter
     Small AM Transmitter
     Simple FM Transmitter
     Micro Spy PLL FM Transmitter
     4W PLL FM Transmitter
     FM Transmitter Bug
     30W Digital Wattmeter for RF (0-500MHz)
     200mW FM Transmitter
     Simple FM Transmitter with BC549
     100W FM AMPLIFIER
FM Telephone Transmitter

 

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]



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