Ramsey Electronics CB1 CHATTERBOX, Руководство пользователя

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CB-1
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MICROPHONE CONSIDERATIONS
The CB-1 has a built-in miniature electret condenser microphone which is ideal
for stand alone operation. If you would like to use an external microphone, it can
be connected to the "MIC IN" jack, J3. Any sort of microphone may be used. In
addition, the CB-1 is designed to be used with push-to-talk (PTT) microphones
of the Icom/Yaesu/Radio Shack variety. If one of these microphones is used,
you may use the PTT button on the mike to automatically start and stop the
recorder. In this case, the CB-1 will record anytime the microphone button is
depressed. Simply pressing the start button will repeat that message over the
radio. The CB-1 will even key the radio itself!
We have included the pin out diagram for the 5 pin DIN connector below.
Information may be found about the proper wiring to your radio from your
manufacturer or from the manual that came with your radio. To hook up the
chatterbox to your radio, you must understand the pins of the DIN connector on
the rear of the unit:
5 Pin DIN Jack Connections:
Pin 1: Audio output to radio mic in
Pin 2: Ground
Pin 3: Push to talk (open collector)
Pin 4: Radio speaker to chatterbox.
Pin 5: No connection
Icom style radios "look" for the closure of the microphone's push-to-talk switch
by sensing current being drawn by the microphone. Circuitry inside the radio (or
CB-1) senses the current draw by this resistor and in turn keys the radio. You
must be aware that if you try to connect a microphone that does not have a
resistance greater than 10K ohms to the CB-1's microphone input jack, J3, the
CB-1 will trigger the transmitter. Putting a switch in series with the mike will act
as a PTT button or if you wish to use the front panel Start button, add a
capacitor (.1uF ) in series with the microphone so the CB-1 will not see any
current drawn by the mike.
Due to the myriad of different radios and microphones, we're sorry that we
cannot provide exact, precise, tested hook-up instructions for each and every
radio. Here's a great place to use your radio skill and common sense to solve a
typical hook up project!