Sigtronics Spo-42 4P Intercom

The Sigtronics SPO-42 is a portable Transcom II intercom for up to four headset positions. It is designed for voice-activated communication between connected occupants and uses a main unit with a remote expansion module for the additional headset positions.

Suitable for portable intercom use where clear crew and passenger communication is required, the SPO-42 provides adjustable volume and squelch controls, auxiliary audio input and audio output connections, and push-to-talk inputs for pilot and copilot positions.

• Manufacturer part number: SPO-42
• Roctexo part number: RX1-10-19115
• Four headset positions
• Voice-activated intercom operation
• Radio-priority function during transmission
• Fail-safe radio monitoring for the pilot position
• Auxiliary audio input for a compatible monaural audio source
• Auxiliary audio output for recording intercom or radio audio
• Operates from 9 V battery power or 11–34 V DC aircraft power

Please consult the aircraft configuration and the manufacturer instructions before installation or use. Manufacturer operating instructions (PDF)