In service since 1995, the test coach is equipped with measurement receivers, mobile telecommunications testing devices, measurement antennae and computers. It also houses systems for measuring PMR and GSM(-R) applications.

Radio test coach schedule.
The use of the test coach is coordinated by SBB Telecom. The schedule is structured as follows:

Testing of public GSM networks:

Testing of SBB networks:

Technical specifications of the radio test coach:

• Vehicle number: X 60 85 99-73 109-8
• Length over buffers: 26.4 metres
• Height (incl. antennae): 4.4 metres
• Width: 2.825 metres
• Weight (gross): 42 tonnes
• Brakes: O-PR (GS)
• Braked weight: 57 tonnes
• Heating cable: 1,000 Volt / 16.7 Hz
• No. of axles: 4
• Distance between bogies: 19 metres
• Multiple-unit control: Type IIId and EP line
• Basis: Bm 51 85 22-70 026-0
• Telephone: +41(0)51 2204481 or +41(0)79 2231001
• Alarm system: Securtion (intruder, fire)