Operation
025-9567E 23
This table shows the control relays programmed against each of the four SEND keys. The
channel busy input number for a SEND key always matches the number of the SEND key.
SEND Key
Control Relays
Programmed
Channel Busy
Input Used
1
- - - - - - - 1
1
2
- - - - - - 2 -
2
3
- - 6 - - 3 - -
3
4
- - - 5 4 - - -
4
This table shows calls from blocks 2, 5, and 9 and the control relays programmed against
them. Block 9 must be the custom call block since each of its calls has different relays
programmed against them. The channel busy inputs used are found from the control relays
programmed against both the calls listed and the SEND keys.
Call Number
Control Relays
Programmed
Channel Busy
Input Used
2123
8 - - - - - - -
none
500000
- - - - - - - 1
1
9001
- - 6 - - - 2 -
2 and 3
9002
- - - - - 3 - 1
1 and 3
9003
- - - 5 4 - - -
4
This table shows how the busy input is found for call number 9001. Note that relay 2 matches
a relay programmed for SEND 2. Relay 6 matches a relay programmed for SEND 3. This
results in channel busy inputs 2 and 3 being used. This call will be sent if the level of inputs 2
and 3 are either ignored or not busy. If either input is busy, the call will be inhibited.
Call 9001
Control Relays Programmed
- - 6 - - - 2 -
Send 1
- - - - - - - 1
Send 2
- - - - - - 2 -
input 2 is used
Send 3
- - 6 - - 3 - -
input 3 is also used
Send 4
- - - 5 4 - - -
- - X - - - X -
these inputs match
Keying Method
Two methods are available for keying transmitters. This option is programmable. One
method is called Direct Channel Keying. Using this method, the keying of one or more
channels is directly controlled by the eight control relays and the PTT relay. The control and
PTT relays close nearly simultaneously and both sets will remain closed while the call is
being sent.
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