**Part List:**

R1, R3, R9, R10 - 10 kilo ohms 1/4W

R2 - 22 kilo ohms 1/4W

R4 - 100 kilo ohms 1/4W

R5 - 1.2 kilo ohms 1/4W

R6 - 47 kilo ohms 1/4W

R7 - 120 ohms 1/4W

R8 - 390 ohms 1/2W

R11 - 47 ohms 1/4W

Pot1 - 5 kilo ohms potentiometer

C1, C5 - 0.33uF electrolytic capacitor rated 25V

C2 - 22uF electrolytic capacitor rated 25V

C3 - 10uF electrolytic capacitor rated 25V

C4 - 220nF

C6, C7 - 1000pF ceramic capacitor

C8 - variable capacitor not less than 40pF

C9 - variable capacitor not less than 22pF

Q1, Q3 - 2N2222A or similar NPN transistor

Q2 - 2N2906A or similar PNP transistor

L1 - VK220J or similar RFC inductor

L2 - 3 turns 18AWG magnet wire wound in 10mm diameter plastic former

L3 - 2 turns of 18AWG magnetic wire wound close to L2 using the same core where L2 is wound. See diagram below.

2N2906A pinout |

2N222A pinout |

Inductor L2 and L3 construction |

**Note:**This transmitter is for educational use only. Long range transmitter is illegal in some countries thus use it at your own risk.

can you give the full cercuit board & symbols i dont understand l3 coil etc where she connected or please add more info

ReplyDeletethis nice project how amazing range up to miles

ReplyDelete2N2222A NPN Small Signal General Purpose

2N2906A this is not available what replacement =

what is this VK220J

Pot1 - 5 kilo ohms potentiometer

how many watts is it???

ReplyDeletewhat is VK220J type RFC

ReplyDeleteIs this circuit really works

ReplyDeleteSir I watch your circuit very nice.

ReplyDeleteI have same equation how replacement correct or wrong please reply

.

Q3 insted 2n2219

Q2 BC 177

Qi BC 109.

I wait ur reply thanks my id

babarcity248@gmail.com

I will try this..

ReplyDelete