Garmin GTS 800 Series Taffic Systems

Part No.	PHOTO	Description	CART	Price
GMN GTS-800	PHOTO	GTS-800 Traffic System	CALL	CALL
GMN GTS-820	PHOTO	GTS-820 Traffic System	CALL	CALL
GMN GTS-850	PHOTO	GTS-850 Traffic System	CALL	CALL
System prices starting at $8,650 plus installation

Advanced air traffic surveillance and collision avoidance systems.

Let’s look at the systems:

The Garmin GTS lineup features three distinct system configurations, each tailored to a specific range of aircraft and cost/performance requirements. All three Garmin systems will operate to 55,000 feet – so they’re not constrained by the much lower altitude limits imposed on some competitive TAS/TCAS systems.

GTS 800 TAS: A lower-cost option with performance suited to most light aircraft and helicopters2, the GTS 800 offers 40 watts of transmit power, a +/- 10,000-foot vertical separation maximum, and a typical active interrogation range of 12 nm in the forward direction. Passive surveillance is provided with available 1090 MHz extended squitter ADS-B “In” capability. The basic GTS 800 system consists of a remote transmitter/receiver computer LRU and a single top-mounted directional antenna. Flexibility is provided for optional dual directional antenna configurations, as well.

GTS 820 TAS: With 250 watts of nominal power output and up to 40 nm of active interrogation range in the forward direction, the GTS 820 is recommended for faster and higher-performing aircraft2. The 820 can actively track up to 60 targets simultaneously, and depending on the specific cockpit display being used, will depict up to 30 of the most relevant traffic threats. Passive surveillance is provided with available 1090 MHz extended squitter ADS-B “In” capability. And the typical installation includes both top-mount directional and optional bottom-mount antennas (directional or omni) to reduce the potential for antenna “shading” of TAS interrogations. This shading effect can cause targets to drop out during turns or maneuvers, or when threat aircraft are positioned directly below you. In addition to the remote computer LRU, the GTS 820 package includes a 4-channel GPA 65 power amplifier/low noise amplifier (PA/LNA) that is remotely installed near the top directional antenna to boost antenna performance while minimizing power consumption for better efficiency.

GTS 850 TCAS I: Featuring the same componentry, tracking range and 250-watt nominal power output of the GTS 820 TAS, the TCAS I certified GTS 850 is recommended for today’s higher-capability cabin class turboprops and business jets2. For commuter aircraft (those with 10 to 30 passenger seats), TCAS I capability is mandated by the FAA. The Garmin GTS 850 system satisfies all TCAS I collision avoidance criteria, while enabling both active and passive (via ADS-B) surveillance of fast-closing aircraft in high-traffic airspace.

GARMIN TAS / TCAS COMPARISON:	GTS 800	GTS 820	GTS 850
Traffic system type	TAS	TAS	TCAS 1
Transmitter power output (nominal)	40 watt	250 watt	250 watt
Active surveillance range (typical)	12 nm	40 nm	40 nm
Number of targets tracked	60	60	60
Number of targets displayed (dependent on display system capability)	30	30	30
Display range	2/6/12	2/6/12/24/40	2/6/12/24/40
Range accuracy	+/- .05 nm	+/- .05 nm	+/- .05 nm
Bearing accuracy	5° RMS	5° RMS	5° RMS
Altitude accuracy	+/- 200 ft	+/- 200 ft	+/- 200 ft
Altitude resolution	+/- 100 ft	+/- 100 ft	+/- 100 ft
Max vertical separation	+/- 10,000 ft	+/- 10,000 ft	+/- 10,000 ft
Audible target threat position callouts	Yes	Yes	Yes
1090ES ADS-B receiver (requires ADS-B “Out” capability)	Yes	Yes	Yes
Correlated display capability	Yes	Yes	Yes
Selective Mode-S interrogation	No	Yes	Yes
Maximum Operating Altitude	55,000 ft.	55,000 ft.	55,000 ft.

Antennas that clear the air:

The antennas and technology used by Garmin TAS and TCAS are designed to help minimize frequency congestion while enhancing signal reception. Moreover, an array of available antenna configurations allows performance to be optimized for specific types of aircraft. The system works by sending out a transponder interrogation signal from your aircraft – an interrogation that is picked up by another aircraft’s transponder, which in turn sends back a reply. Your system’s traffic computer uses that reply to calculate distance, direction, relative altitude, etc., of the replying aircraft. Should the other aircraft pose a collision threat, a traffic advisory is displayed and audibly annunciated.

The antennas incorporated by Garmin TAS/TCAS include a top-mounted directional antenna that is used to determine distance and relative bearing to the intruder aircraft. (Bottom-mount directional antennas are also optionally available to help prevent target drop out during turns and maneuvers. For high-speed aircraft, optional low-profile directional antennas are also available.) By making these antenna transmissions directional, the system is able to reduce the number of transponders being interrogated simultaneously, and thus reduce potential garbling of replies on the 1090 MHz frequency band.With the capability supplied by a Garmin GTX 33(D) or GTX 330 transponder, Mode-S detection techniques enable the GTS 820 and GTS 850 systems to provide interference-limiting “selective interrogation” that apportions transmission rates to give higher priority to the nearest and fastest-closing targets.

Better technology for higher safety:

The Garmin GTS family of TAS and TCAS I systems offers a full range of traffic surveillance capabilities to fit your specific aircraft and operational requirements. Plus, the Garmin network of worldwide sales and support facilities adds even more confidence and peace-of-mind to every flight.

GTS 800/820/850 Processor LRU	GA 58 Directional Antenna
Unit Size: 6.25"W x 2.7"H x 12.7"D (15.87 x 7.11 x 32.25 cm) excluding mounting rack	Unit Size: 4.03"W x 2.97"H x 5.63"D (10.24 x 7.54 x 14.30 cm)
Weight: 9 lbs (4.08 kg) LRU; excludes connectors Vertical rack - 1.05 lbs (0.48 kg) Horizontal rack - 1.94 lbs (0.88 kg)	Weight: 0.8 lb (0.36 kg); excludes connectors
Temperature: -55°C to +70°C	Omni-Directional Antenna (optional)
Operating Altitude: To 55,000 feet	Unit Size: 0.98"W x 3.30"H x 4.00"D (2.49 x 8.38 x 10.16 cm)
Power input: 14 or 28 VDC 40 watts max. (GTS 800); 45 watts max. (GTS 820, 850)	Weight: 0.24 lb (0.10 kg); excludes connectors
Cooling input: Integrated	GPA 65 PA/LNA Module (GTS 820/850 only)
Environmental Compliance: RTCA DO-160E	Unit Size: 4.25"W x 1.00"H x 8.00"D (10.8 x 2.54 x 20.32 cm)
Software Compliance: RTCA DO-178B Level C	Weight: 1.75 lb (0.79 kg); excludes connectors
Hardware Compliance: RTCA DO-254, Level C
TSO Compliance: GTS 800,820 TAS: TSO-C147, TSO-C166a, DO-197A, DO-260A; GTS 850 TCAS I: TSO-C118, TSO-C166a, DO-197A, DO-260A