The Circuit shown can transmit voice to exceptionally good range. Tune trimmer to hear the signal to your near radio. Frequency range is 88-108 MHz. Max current consumption is 30mA. You can power the bug with a 9Volt Battery, or you can plug a power supply to feed in 9-12 Volts.
Datasheet file1: Click here to download 2N2222.pdf datasheet. Datasheet file2: Click here to download BC547.pdf datasheet.
Comments
wrote on May 26, 2008
tray this to improve range with range and volt,apear
mike wrote on Nov 1, 2009
did enybody test if it works?
spytekpro wrote on Dec 6, 2009
it works fine. power output is 200mW...
joy wrote on Jun 30, 2010
From where do i get mic
and what to say when u buy the mic like (some farad some volts for capacitor)
we don't hav any shelf like thingie to pick from we have to buy from a shop.
sudhu wrote on Jan 27, 2012
does dis circuit amplies evn radio frequecy waves & gives d output?
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