Make: Online : HOW TO - Make a telephone FM transmitter

HOW TO - Make a telephone FM transmitter

Tfmt3
LeorickSimon writes - "This project is taken from www.electronics-lab.com. With some modification, I create my own version of FM Telephone bug complete with stripboard layout. Theortically, the frequency range is from 88MHz to 94MHz but you may experiment with the coil structure to tune it." - Link.

Comments

Oldest comments listed first.

Posted by: hyperdrive on October 28, 2006 at 10:14 PM

do you know anyone that makes this telephone transmitter? i don't know much about putting these things together and would rather buy one from a reliable audio surveillance equipment manufacturer.

any ideas?

the hyperdrive

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Posted by: sliceofsand on December 2, 2006 at 6:35 PM

there is a company in england that makes a telephone transmitter such as a parallel telephone transmitter and a series telephone transmitter.

i don't remember what the company name is but i remember they were in the west end of london.

they have a workshop in the rear where the build their equipment. i think their website is http://www.gcomtech.com

i checked out the site and they have a telephone transmitter on this page here: http://www.gcomtech.com/product.aspx?ID=32&CID=9

hope this helps your search.

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Posted by: kingsley on January 9, 2008 at 12:52 PM

some circuit are shown without circuit diagram, pleas i'll like it if the diagram is shown for easy understanding.

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Posted by: jennifer on January 16, 2008 at 12:52 PM

i just want to know how to make a small scale model of a telephone...for a history project? could you put something a little less technical in here
Thank you

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Posted by: agate_white on May 4, 2009 at 8:09 PM

Your basically looking for a FM transmitter. Telephone is simply the audio i am going to modulate the carrier with.http://www.vxcb.comThank you.

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