The bigger and emptier the hall, the easier the signal breaks
The difficulty in an exhibition centre is not its floor area but its structure: single storey, column free, long span, high clear height and mostly steel — the signal has nothing to work with. During an event, several authorities, a heavy crowd and hard deadlines all arrive together.
Long span, high clear height and mostly steel structure: the signal attenuates noticeably in the middle and at the corners, and an ordinary design cannot reach.
Build-up, show and breakdown involve completely different people, so the requirement shifts repeatedly within a few days.
Facilities, security, police and fire are all present, each with its own requirement, and all of them have to coordinate inside one building.
At the opening peak the crowd concentrates, and queues at screening, temporary controls and incidents all have to be communicated immediately.
Build-up vehicles, the freight holding area and internal traffic interleave, so dispatch has to reach the outdoor grounds too.
Evacuation, fire interlock and police response — not one call can be unintelligible or go unanswered.
Multiple access points, signal into every hall
Once a site survey and field measurement have established where the dead zones are, access points are placed at the building's various aggregation points and fibre distributes the signal to the halls, entrance concourses, links and outdoor grounds.
Real field strength is measured hall by hall on site, establishing where the dead zones are and how the loss behaves — the design is based on measurement, not estimation.
Access points are placed at the building’s various aggregation points, so coverage does not fall away too quickly across a long span from a single source.
Digital optical remote units carry the signal to each hall, entrance concourse and outdoor ground — no loss over distance, and maintainable.
Device state is reported live, so pre-event checks and on-duty monitoring have something to work from and faults raise an alarm.
Two networks — venue and police —
on one antenna system
400 MHz venue operations and 350 MHz police communications coexist on the same distributed system, each managed independently and neither interfering with the other. The venue does not build a separate network per authority, nor put up a temporary one for each event.
Talk groups follow department and function, with build-up, exhibitor and emergency channels opened temporarily for the duration of an event.
What the venue gains beyond the calls
On top of the communications, the system provides equipment monitoring, dedicated dispatch and indoor patrol positioning — turning what happens during an event into a record you can watch, search and review.
Which hall someone is in and whether the route was walked — on-duty coverage during an event visible on one screen.
Flexible grouping by department and by event, so instructions land first time and roles do not talk over each other.
Live condition monitoring across the system, so pre-event checks and on-duty monitoring both have evidence.
National-level exhibition and convention centre, Tianjin
The third national convention project after the national exhibition complexes in Guangzhou and Shanghai. Combining exhibition, conference, retail, office and hotel, it is the largest new-generation green exhibition complex in northern China. Phase two runs the Evertac two-way radio system.
After survey and field measurement, a multi-point access design provides dual-band coverage from the building’s aggregation points — communication holds at the moments and places that matter.
Equipment monitoring, dedicated dispatch and indoor patrol positioning are added on top of the basic communications, giving the venue comprehensive information support.
Digital optical remote units raise system stability, and full network management satisfies live oversight and intelligent management requirements.
What we do on site before the doors open
During the China International Import Expo we provide radio communications assurance for the fire, police and facilities teams at the national exhibition centre in Shanghai, with a team drawn from engineering, technical support, service and supply chain stationed on site.
Core equipment and links checked before the event, with risks cleared in advance.
Every base station, remote unit and antenna confirmed in turn.
Field strength re-measured zone by zone across 1.27 M m², confirming no new dead zones.
800+ radios programmed to one plan and call quality tested unit by unit.
Critical spares placed on site so a fault is swapped, not waited on.
A joint drill with every department, verifying the emergency command chain.
Recommended product mix
Several bands in parallel, supporting independent groups per authority.
Carrying the signal into every hall and the outdoor grounds.
End coverage and Bluetooth positioning across long-span space.
Issued in volume to facilities, security and temporary event posts.
How the design gets made real
Authorities involved, spectrum available and the event calendar confirmed.
Field measurement hall by hall, establishing dead zones and difficult areas.
Multi-point access placement, frequency plan and talk-group design.
Installed and commissioned by our own team, accepted against field-strength criteria.
Pre-event re-measurement, spares on site and staff on duty.
Send us the hall layout, the authorities involved and the event calendar. We survey on site and come back with a coverage design, a frequency plan and an event-period assurance plan.
Exhibition and venue key facts
Halls and outdoor
Exhibition halls, concourses and outdoor areas
Event-day capacity
Channels planned for peak staff numbers
Shared network
Security, operations and exhibitors on one system
Expo and parks
Convention centers and theme parks in our cases
Venue and event coverage FAQ
The questions we hear most often on selection, certification and delivery.
Didn’t find your question? Ask an engineer →A private radio network is not affected by visitor phone traffic. Channel capacity is planned for peak staffing on event days.
Yes. Talk groups and radios can be provisioned for event-day teams and exhibitors, then removed after the event.
Halls, concourses, back-of-house, loading docks, car parks and outdoor plazas, with fiber-fed remote units in each zone.
References include national-level convention centres, a major theme park in Beijing and other venues listed in our case studies.