Basement & Parking
Eliminate dead zones below ground.
Application Overview
Basements and underground car parks are shielded by concrete and soil, so outdoor signals rarely reach them. A dedicated indoor distribution system is usually required, with a donor antenna on the roof or at grade and a network of ceiling antennas below ground.
Typical Installation Layout
A typical installation uses an outdoor donor antenna, a booster or fiber repeater, a distribution network and indoor service antennas.
- 1
Install the donor antenna at grade or on the roof where the outdoor signal is usable.
- 2
Run a low-loss feeder to the booster in the basement technical room.
- 3
Distribute signal through ceiling antennas along drive lanes and parking bays.
Installation notes
- Use fire-rated cable where required by local codes.
- Seal penetrations between floors against water and dust.
- Plan antenna positions around columns and ducts.
Recommended Signal Booster Solutions
The models below are a starting point. The final Bill of Materials is confirmed after a site survey.
AL-30 Multi-Band LCD Signal Booster
Multi-band booster with LCD display, AGC and isolation detection for 100–3,000 m² coverage.
HAG-19-27T Single-Band Engineering Booster
37 dBm output with 75–85 dB gain for 3,000–5,000 m² coverage.
Indoor Omnidirectional Ceiling Antenna
3 dBi omnidirectional ceiling antenna for 800–2700 MHz.
View DetailsRequest a Solution
Share your floor plan, coverage area and target bands. Our engineering team will propose a practical configuration.
- sale@cellphonenetworkbooster.com
- Mon – Fri, 9:00 – 18:00 (GMT+8)
Helpful with your enquiry
- Floor plan or site photos
- Area, floors and ceiling height
- Target bands and operators
Frequently Asked Questions
How many antennas are needed for a 5,000 m² car park?
A common starting point is one ceiling antenna per 300–500 m², adjusted for ceiling height, columns and drive lanes. A site survey confirms the final count.
Can the system cover ramps and entrances?
Yes. Add directional antennas at ramps and entrances where the coverage transitions between outdoor and indoor.
Is a fiber repeater needed for a large underground site?
If cable runs exceed the loss budget or the site has multiple separated zones, a fiber repeater is often more practical than long coaxial runs.
Can the system support emergency calls?
Voice coverage depends on the donor signal and system design. For emergency call requirements, confirm the applicable standard with local authorities.