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Are there any potential problems related with the Garmin GDL49 Datalink System?

April 26, 2017datalink Garmin potential problems system

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Are there any potential problems related with the Garmin GDL49 Datalink System?

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First, prior to installation of the Garmin GDL49 datalink system, the owner/operator is urged to create a customer account with Echo Flight. If an account has not been setup, complete testing of the system cannot be performed. There should not be a coverage problem related to the GDL49 performance anywhere due to the 35 ORBCOMM satellite constellation. Individual satellites move quickly crossing the U.S. in about 15 minutes. On average there are 2 satellites overhead at any one time but only one is required to communicate. The GDL49 communicates with the satellite system on a VHF frequency range that is susceptible to RFI interference. Due to this, RFI in the 135 to 140 Mhz range may interfere with the GDL49 reception. In addition, the VHF antenna should be mounted on top of the aircraft away from any motorized, pulsating assemblies that may cause interference.