The Northern Electric / Bell Canada QSK7A is a local battery-powered communication set designed for broadcasters to coordinate remote programming over leased telephone lines. It supported both 2-wire and 4-wire connections, making it a reliable choice for radio stations managing live remote broadcasts.
Key Features:
- Dedicated Order Wire Communication – A separate phone circuit allowed seamless communication between remote locations and the studio.
- Built-in Ringing Signal Generator – The QSK7A included a battery-powered oscillator to generate ringing current for signaling the other end.
- Program Quality Audio Transformer – Equipped with a 150 to 600-ohm transformer, it ensured high-fidelity transmission by matching the subscriber’s audio program to the leased line.
- Versatile Audio Input Options – The rear panel featured independent terminals supporting multiple microphone impedances:
- 150 ohms
- 500 ohms
- 600 ohms (line connection)
Design & Connectivity:
- The ring indicator is located at the upper front left of the unit.
- The headset jack is positioned at the upper front right for convenient access.
- The back panel hosts dedicated terminals for connecting microphones and leased lines, ensuring flexible setup options.
The QSK7A played a crucial role in remote broadcasting, providing reliable and high-quality audio transmission for live productions.
Cleaned and Reassembled
As received .
Disassembled and ready for a cleaning.
Cleaned and ready for assembly.
