Cirrus Off-Air Master
Why Off-Air Systems Like Cirrus Are Needed
Reliable Coverage Without On-Site Base Stations (BTS)
Buildings need strong indoor signal but can’t host operator base stations due to space, cost, or approval barriers. Cirrus solves this by taking the outdoor network signal and bringing it indoors — perfect for offices, hotels and smaller buildings where base stations aren’t an option.
How Cirrus Off-Air Master Works
Macro Off-Air Signals → Digital DAS → Indoor Coverage
Cirrus captures the outdoor donor signal through an antenna, and feeds it into your digital Maven DAS. The DAS then distributes coverage across the building. No base station, low power use, and a fully digital chain that’s simple to install and easy to maintain.
Coverage in Tunnels
Tunnels rarely have space or conditions for operator base stations, yet they still require continuous, safe radio coverage.
Cirrus captures the outdoor network signal and feeds it into your tunnel DAS — ideal for road, rail, and utility tunnels where installing base stations isn’t possible.
Examples of successful reference cases
Cirrus – Digital Off-Air Master
The Cirrus off-air headend unit converts radio signals to a digital CPRI stream. Cirrus can be used as a primary or secondary source for redundancy of a hybrid DAS system.
Technical characteristics
- Supports any bands from low V/UHF to higher cellular bands
- Multi-operator
- Modular and scalable design
- Typically 200W power-consumption
Stratus – High Power Digital DAS Remotes
The Stratus high power digital remote is suitable for hybrid DAS installations supporting passive antenna and leaky feeder systems. The Stratus remote supports combinations of public safety bands (87.5MHz-900MHz) and cellular bands (700MHz – 4GHz) in any SISO or MIMO configuration.
Technical features
- Up to 5 bands in one enclosure and/or 4X4 MIMO Support
- Fanless – passively cooled maintenance free
- Typical 400W power consumption
- Weather-proof (IP66) and less than 25kg
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Any questions?
Do you have any questions about how our indoor coverage solutions works? Don’t hesitate to reach out!
Jörgen Krigsman
Sales Chief Officer