VK7DC 
SIMPLE REPEATER CONTROLLER /BEACON MORSE CODE I.D. UNIT

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UPGRADE FOR REPEATER CONTROL - Sept 2017
FM REPEATER CONTROL
This simple board provides simple repeater control and outputs morse code audio identification for FM repeaters.
Will ident at end of first received signal and if further transmissions are received will ident again
at the end of the preset time (nominally 10 minutes). Does not include a timeout function.
This will need to be done in the transmitter programming. Remote control/disable not available in this controller.

BEACON OR REPEATER ID
FSK output for beacons or other transmitters that require CMOS/TTL level input or just audio.  Easily interfaces with radio equipment.
Use it for a foxhunt event to key up a hidden hand held transmitter and identify.
 
Pic Microchip based circuit, with stable internal crystal oscillator.
Suitable for repeater or beacon morse code identification.
Generates morse code audio at approximately 12wpm and 2kHz tone.
Supplied pre-programmed with your desired message and time delay.
Can be used with either positive or negative edge triggering to suit your requirements.
Can run in beacon mode, where ident repeats automatically after the set time delay expires.
FSK output, which can be used to drive your own audio oscillator or generate
true FSK by modulating a crystal/PLL or similar inside the beacon radio. 
The PTT output turns on while the ident is occuring.
Can be used as a fox hunt auto key-up and ID for a hidden 2m/70cm transmitter.
In repeater mode the TX tail is approx 4 seconds - other lengths can be custom orderded
SAMPLE BOARD

Amateur radio, cb radio, morse code id unit, repeater 12 wpm 2kHz tone. morse code, FSK output

SPECS

Current consumption ~ 10mA

Required supply voltage    8-16Vdc, or  5Vdc if bypassing regulator

ID speed ~ 12wpm
ID tone ~ 2kHz
Price: Fully built, programmed and tested -  $60 + postage (at cost)
Programmed chip only - $25 + postage (at cost) for DIY circuit board builders 
Contact :   daveland100  at  gmail dot com

Veroboard layout / Circuit diagram

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