Worldcast Systems - Radio & TV Broadcast Solutions


In an emergency, response time is critical. Police, fire-fighting, search and rescue services depend on fast and reliable audio and video communications. Our resilient mobile network access solution with award-winning SureStream technology is designed to meet the needs of public safety aviation professionals for surveillance and video transmission in emergency situations.

Two solutions are available: 

  • APT SureStreamer HELI
  • APT SureStreamer DRONE

This resilient, low latency solution enables high quality, simultaneous video streaming between mobile surveillance forces (helicopters, drones and vehicles), the Control and Command Centers, and the first responders.
On a low and constant latency of less than 0.5 sec. over 4G/4G+/5G networks (glass to glass) enables fast and efficient decision-making and action-taking, in real-time.



Ultra-low latency

Thanks to the TCP-free signal chain and the omission of channel bonding, the APT SureStreamer HELI and DRONE ensure the lowest latency achievable and significantly lower than traditional broadcast video codec solutions.


SureStream is a streaming technology based on diverse streaming, sending multiple copies of your video stream across different carriers. You benefit from high stability of the IP connection, even under difficult circumstances. 


Utilizing secure VPN encrypted links for all transmissions over the cellular network and the public Internet, end-to-end video is secure and safe from prying eyes.

Low operating costs

Your video content is distributed across affordable 4G/4G+/5G mobile internet links. Using the unique tool-sets and features incorporated within SureStream, the SureStreamer HELI and SureStreamer DRONE are compatible with any network with the use of standard SIM cards.


Helicopter Application

With the SureStreamer HELI our first responders can have multiple and simultaneous access to the ‘eye in the sky’ in real time.
The team on approach make critical split-second decisions without direction or communication form the pilot



Reliable, low latency video communication
for Public Safety Aviation


APT SureTreamer HELI

APT SureStreamer HELI is a mobile network access solution for high quality video transmission in less than 0.5 sec. air-to-ground!

Download HELI brochure

APT SureStreamer Heli
APT SureStreamer Drone

APT SureStreamer DRONE

APT SureStreamer DRONE is a mobile network extension which meets the needs of public safety professionals for mobile surveillance and video broadcasting in emergency situations.

Download DRONE brochure




Learn more with Kevin's tech talk:

Thursday, July 29th at 11:00 AM

Location: Theatre TBC

Kevin Campbell


Ultra-Low Delay Linking By Cellular / LTE for Heli and Drone Video

Increasingly Public Safety Aviation are looking for alternatives to microwave downlinking. LTE / Cellular is one such solution, however LTE is not without issue, this is public internet, packets are dropped, video can lag, is this secure? WorldCast's award-winning SureStream algorithm has been incorporated into the APT SureStreamer Heli and APT SureStreamer Drone products, adding ultra-reliability of video delivery with an ultra-low delay of <500ms over dual cellular / LTE links; making this a lower cost and more robust option.  This talk will explain these new video linking solutions and the core technology behind them.