Sigtronics SPCC-2, Руководство по эксплуатации

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5. Push-to-Talk Switches: In order for pilot and observer to
transmit on their selected radios, they will each need a
push-to-talk (PTT) switch. The SPCC is compatible with all
standard general aviation type portable push-to-talk
switches. The male plug on the PTT switches plug directly
into the XMIT SW jacks of the SPCC unit. If your PTT
switches also have a female jack, it is not used. The pilot
should strap the switch end of his portable PTT switch to
the yoke or stick of the aircraft. The observer's PTT can
similarly be strapped to the co-pilot controls or operated
as a hand-held switch. Various types of push-to-talk
switches are available from Sigtronics, including one that
does not have the female jack.
If you already have permanently wired push-to-talk switches
in the aircraft, and wish to use them with the SPCC instead
of the portable type, then wiring modifications will have to
be made to the aircraft. Again, your avionics technician
should be able to do this for you.
6. Headset Hookup: All standard general aviation headsets are
compatible with the SPCC unit. Helicopter type headsets can
also be used if adapter cables are used. (Sigtronics
manufactures cables that adapt the helicopter plugs to
general aviation plugs).
Plug the microphone and headphone plugs on the headsets into
the jacks labeled MIC and HDPH, on the front panel of the
SPCC. Put on the headset, and position the boom mic close to
the mouth, as is the practice with hand-held microphones.
Voice clarity is best when the mic is about 1/4" away and
slightly off center from the lips. Turn headset volume
control(s), if any, all the way up.