MAP and VFR GPS Navigator Operation
SkyView HDX Pilot’s User Guide – Revision B 5-23
SV-ADSB-470/472 Traffic Display Capabilities (US Only)
The SV-ADSB-470/472 works in tandem with your SV-XPNDR-261/262 or Garmin GTX 330ES
transponder module to provide the ADS-B based TIS-B traffic picture around your aircraft when
you have both products and a Moving Map License is activated. This is enabled by the following
bidirectional data link capability:
1. The SV-XPNDR-261/262 or Garmin GTX 330ES has ADS-B out capability via its 1090ES
capability.
2. The SV-ADSB-470/472 contains an ADS-B 978MHz “UAT Band” receiver that can see
other traffic – both ADS-B equipped targets AND radar targets – in the following
manner:
a. ADS-B equipped aircraft: The SV-ADSB-470/472 can detect traffic transmitting
ADS-B out messages via 978 MHz directly. The SV-ADSB-472 detect traffic on
1090 MHz, as well.
b. TIS-B: Additionally, the FAA’s ADS-B TIS-B service, seeing your transponder’s
1090ES ADS-B out transmission – but knowing that your aircraft only has 978
MHz input capability via the SV-ADSB-470/472 – assembles a traffic portrait of
all traffic that it knows about that are within 15 Nm and +/- 5000 ft. of your
aircraft. This includes:
(1) ADS-R (rebroadcast) targets: The FAA ADS-B system will rebroadcast all
of the 1090ES ADS-B-equipped targets onto the 978 MHz band for
your benefit (SV-ADSB-470 only)
(2) Radar targets: Any targets that the FAA’s radar system is aware of via
approach, center, and other radar facilities.
Note: The SV-ADSB-472 is a dual band receiver and generally relies on direct reception of ADS-B
equipped aircraft. As a result, ADS-B equipped aircraft may not be retransmitted by the FAA’s
ADS-R service.
The end result: your aircraft sees the vast majority of the aircraft that can possibly be a factor.
Since SkyView participates in the ADS-B system via the SV-XPNDR-261/262’s or GTX-330ES’s
ADS-B out capability, it receives all of the traffic that the FAA knows is around your aircraft. In
contrast, receive-only ADS-B traffic solutions are not able to see the all traffic (such as radar-
only targets) because they are not able to request traffic data from the FAA ADS-B ground
stations. To reduce clutter from targets that are far away, targets that are farther than
approximately 15 nm away from your position or more than 5,000 ft above or below your
altitude are not shown.
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