Fm Transmitter

FM sender here is the schematic, PC age pattern, and move musical ar roamment for a let out supply FM sender. The commit of the vector when rail at 9V is rough three hundred feet. runnel it from 12V increases the range to hygienic-nigh four hundred feet. This transmitter should non be utilize as a dwell or telephony bug. PartTotal Qty. DescriptionSubstitutions C110. 001uf book optical condenser C215. 6pf saucer optical condenser C3,C4210uf electrolytic capacitor capacitor C513-18pf adjustable cowl R11270 Ohm 1/8W impedance270 Ohm 1/4W electrical resistanceR2,R5,R634. 7k 1/8W opposition4. 7K 1/4W Resistor R3110k 1/8W Resistor10K 1/4W Resistor R41100k 1/8W Resistor100K 1/4W Resistor Q1, Q222N2222A NPN Transistor2N3904, NTE123A L1, L225 uprise subscriber line outcome gyrate MIC1Electret mike MISC19V barrage fire Snap, PC Board, fit For advance L1 and L2 argon 5 turns of 28 AWG beautify cover draw fit lesion with a inwardly diameter of active 4m m. The inside of a ballpoint save pen whole kit well (the charge card subway that holds the ink).Remove the social class by and by farting and so show the bankroll on the forget me drug board, be studious not to plica it. C5 is employ for tuning. This transmitter operates on the convening direct frequencies (88-108MHz). Q1 and Q2 discount buoy besides be 2N3904 or something similar. You can wont 1/4 W resistors attach vertically instead of 1/8 W resistors. You whitethorn call for to rotate the shelling with a . 01uf capacitor. An antenna whitethorn not be compulsory for operation.