DigiMaster KIT Instructions

Place and solder the 4 resistors (all are the same value) and the capacitor, note the capacitors polarity so it must be installed in the correct orientation (see image left).
Place and solder the opto isolator, notice orientation (see image left).
Place and solder the 2 3.5mm jack sockets.
Place and solder the 9 pin RS232 connector. (Be careful with the alignment and ensure pins are straight).
Place and solder te 6 pin mini din socket.
Place and solder the link. (Some radios need the link to be closed for correct PTT operation - most radios this is left open).
Place and solder the relay.
Place and solder the 2 isolating transformers.
Place and solder the 2 potentometers (both are same value).
Place and solder the two LED's. (RED=PTT Long lead = + see image left). (YELLOW=CW/FSK Long lead=+v see image left).
Check that you have made no bridges across any of the isolation routed PCB tracks, if you have, use solder wick to remove the excess causing any bridges.

 

Below is the completed PCB showing componenets from the top side of the PCB.


Below is the completed PCB showing the PCB from the underside - components are seen "through" the board.

IN USE
Configure your software to use RTS for PTT and DTR for CW or / and FSK.

The 6 pin mini din socket connections are shown below.
Not all radios support FSK but the output (same as CW) is available on the socket.
The normal colur coding is;-
WHITE = Audio from radio.
RED = PTT.
YELLOW = Audio to radio.
BLACK = Audio GND.
BLUE = FSK.
SCREEN = Radio chassis GND. Note that PTT is normally arranged between PTT and chassis GND, some radios such as the IC910 need the link closed so that PTT is activated between audio/chassis GND.

The connections to your radio's plug depend on your radio model and you should check your operating manual.
Many cables specs can be seen by clicking the "MoreInfo" buttons on the following page here. (Add in the extra blue wire for your radios FSK input if it has one).

The view of the 6 pin socket looking into it, so it's shown exactly as you would see the plug when wiring.