| 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 1kHz 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 (May vary slightly with udates)  |
|
SPECS |
|
Current consumption ~ 10mA |
|
Required supply voltage
8-16Vdc, or 5Vdc if bypassing regulator |
| ID speed ~ 5 - 12wpm (default 12wpm) |
| ID tone ~ 1 - 2kHz |
| Price: Fully built, programmed and tested - $100 + postage (at cost) |
| Programmed chip only - $30 + postage (at cost) for DIY circuit board builders |
| Contact : daveland100
at gmail dot com |
| |
| Veroboard layout / Circuit diagram |