When ACAS issues a Resolution Advisory (RA) to the pilot: RA Downlink carried out the Feasibility of ACAS RA Downlink Study (FARADS) the objective of which was to assess the technical and operational feasibly, as well as safety aspects, of displaying ACAS RA information on Controller's Working Positions (CWP).The RA downlink research undertaken by SESAR P has been inconclusive, as real-time simulation could have not been conducted.Flight crews have an Airborne Collision Avoidance System (ACAS, also commonly referred to as TCAS - Traffic Alert and Collision Avoidance System) to help them avoid collisions.

Here we will now forward the data from the website to the KPN Lo Ra network.

Please refer to the topic on the KPN forum to see how a downlink should be set up.

RAs instruct the pilots to manoeuvre the aircraft vertically.

ACAS RAs are automatically coordinated between the aircraft involved.

Multiple Input Multiple Output (MIMO) is an integral part of LTE.

Vector signal generators and signal & spectrum analyzers from Rohde & Schwarz support LTE measurements with up to 4 antennas.Does TTN receive the uplink messages from the device? If ttn does not recieve the uplink messages at all, no downlinks can be scheduled. And when I send downlink messages to the device via the TTN console, they show up in the console device data (first scheduled, then after an uplink message from the device actually sent) and they reach the device (it causes a led to be turned on).If the signal from your device to the gateway is too weak, maybe the device is not within range to receive downlinks. But the message send via http (the command line message mentioned above) do not even show up in the the TTN console. For more information please review our cookie policy.You have exceeded the time limit and your reservation has been released.An STCA warning is nominally generated 90 to 120 seconds in advance of the closest point of approach between the aircraft concerned.