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SS70A • 14
Set pushbutton switch S3 to the IN position to select SPEAKER level
input.
Install the jumper block between the pins on J4 labeled “SPEAKER” to
select speaker level output.
Connect the scanner’s audio output to J7, RX IN and connect your speaker
to J6 RX OUT.
TAPE RECORDER CONNECTION
In hooking up a tape recorder, we’ll make use of the SS70A’s TX and RX
paths. We’ll scramble the audio through the TX path and send it on to the
recorder’s input to be recorded. We’ll use the SS70A’s RX path to take the
recorder’s playback audio and unscramble.
Once the wires are “hooked up”, energize the circuit and try taping a
scrambled message.Then try to playback and descramble it! While playing
External Speaker
External Speaker or Earphone
Scanner or
Receiver
TX OUT TX IN RX OUT RX IN POWER
SS-70A
TX OUT TX IN RX OUT RX IN
External Speaker
POWER
Microphone
Microphone
Input
External Speaker or Earphone
O
SS - 70
A