Manual Interlock-IP – User guide
Page 6
In the radios that don’t have an Inhibit input, the method to stop transmission is:
•
SSB: Routing the microphone signal through the relay at pins 3 and 8 of the
DB9. When idle, the pins are connected, but when the block is activated the
relay isolates the pins and the radio cannot send any SSB signals (no input
Mic)
•
CW: Routing the CW signal through the relay at pins 3 and 8 on the DB9.
When idle the pins are connected but when the block is activated the pins are
isolated and so no CW signal can be sent.
The auxiliary signal (Pin 7) can be used for radios configured as IN-BAND (R4 or R5)
to activate the switching relay with the Inband station.
Using the JP-A we can select the output level of either 5 or 12V and this level is
common for all radios. The configuration is through a bridge which works as follows:
•
1-2:
5V
•
2-3:
12V
The DB9 connector schematic is as follows:
GROUND
INHIBIT (Out)
PTT IN (In)
Aux OUT(Out)
Pin3 and Pin8 are:
Joined when Inhibit is OFF Default)
Open when Inhibit is ON
Relay
1.3 Jumpers JP-1, JP-2, JP-3, JP-4 and JP-5,
Those jumpers are located close to each of the radio relays. The jumper of the radio
is used (jumper close) when the radio doesn’t include an Inhibit signal so the
Auxiliary PCB is used. In this case, 5V will be present at pin2 when the Inhibit signal
is activated.
So, set the jumper when the Auxiliary Box is going to be used on that radio.
1.4 J1: External power
Power input from 12-14Vdc and 150mA.
