8
OPERATION
The IS-1 is connected between 2 radios. When the IS-1 receives COR or VOX from Radio 1, for example, the IS-
1 will light the Radio 1 COR LED then assert the PTT Output to key Radio 2, light the Radio 2 PTT LED and pass
the audio received from Radio 1 to Radio 2 to be retransmitted.
The power switch is a 3 position switch, with the middle position being off. With the switch in the upper position
the unit gets power from an external source such as one of the radios or an optional wall adaptor. In the lower
position the unit can get power from a customer supplied 9 V battery.
Using CTCSS or DCS
: If it is not desired to have the IS-1 repeat all activity Midian recommends using a different
channel with the same frequency set for a different CTCSS/DCS decode (IS-1) and encode (field radio). When
the field radios wish to interoperate switching to the second channel will cause the IS-1 to interoperate. The field
units on the receiving system will need to switch to the second channel on their radios to respond.
Содержание IS-1
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