Re: 4 Transistor Tracking Transmitter

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4 Transistor Tracking Transmitter

Posted by: andrew ()

Date: June 26, 2003 09:54PM

parts:
Transmitter Parts:
R1 100K resistor
R2 10 ohm resistor
R3 47K resistor
R4 220 ohm resistor
C1 4.7uf electrolytic capacitor
C2 0.001uf disc capacitor
C3 10 to 40pf trimmer capacitor
C4 4.7pf disc capacitor
C5 0.001uf disc capacitor
Q1 2N3906 PNP transistor
Q2, Q3, Q4 2N3904 NPN transistor
L1 4-5 turns of 22 ga. magnet wire close wound around 1/8" non-conductive core
Antenna 10-12" hookup wire

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Re: 4 Transistor Tracking Transmitter

Posted by: kyle ()

Date: June 29, 2004 07:01PM

what sort of range would you get out of this and would it be suitable in 155.fre I was looking for something to use for dog tracking. what sort of range is this???
Thanks Kyle

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Re: 4 Transistor Tracking Transmitter

Posted by: Alan Hall ()

Date: December 21, 2005 05:44PM

Hi! The cct. originally contained a comment "I don't know how it works, what you'd use it for, etc." I've just sent an e-mail off to answer these Qs. ~ and yours as well! Hope you get to read them / find them enlightening!

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			Home Forum!! *Robotics Projects:* Smallbot *Electronics Projects:* SMT Reflow Serial Multiplexer *Project Log:* Current Projects My Bench Equipment				Tracking : Reconn's World Forum Attention! If you would like to post, but don't want to create your own account, use login:guest password:rw -- Enjoy! Goto Topic: Previous•Next Goto: Forum List•Message List•New Topic•Search•Log In•Print View 4 Transistor Tracking Transmitter Posted by: andrew () Date: June 26, 2003 09:54PM parts: Transmitter Parts: R1 100K resistor R2 10 ohm resistor R3 47K resistor R4 220 ohm resistor C1 4.7uf electrolytic capacitor C2 0.001uf disc capacitor C3 10 to 40pf trimmer capacitor C4 4.7pf disc capacitor C5 0.001uf disc capacitor Q1 2N3906 PNP transistor Q2, Q3, Q4 2N3904 NPN transistor L1 4-5 turns of 22 ga. magnet wire close wound around 1/8" non-conductive core Antenna 10-12" hookup wire Options: Reply•Quote Re: 4 Transistor Tracking Transmitter Posted by: kyle () Date: June 29, 2004 07:01PM what sort of range would you get out of this and would it be suitable in 155.fre I was looking for something to use for dog tracking. what sort of range is this??? Thanks Kyle Options: Reply•Quote Re: 4 Transistor Tracking Transmitter Posted by: Alan Hall () Date: December 21, 2005 05:44PM Hi! The cct. originally contained a comment "I don't know how it works, what you'd use it for, etc." I've just sent an e-mail off to answer these Qs. ~ and yours as well! Hope you get to read them / find them enlightening! Options: Reply•Quote Goto: Forum List•Message List•Search•Log In Array Sorry, only registered users may post in this forum. Click here to login This forum powered by Phorum.