|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
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|
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|