Appendix B: Specifications
22-4 SkyView System Installation Guide - Revision AA
SV-XPNDR-261 Specifications
ETSO 2C112b Class 1 Level 2els (see
below), ETSO C166a Class B0, TSO C112c
Class 1 Level 2els (see below), TSO C166b
Class B1S
Level 2 (Comm B) Level 1 + receive and
transmit 112 Bit Messages Level 2A Same
as Level 2 without the support air-initiated
Comm B messages
e – Extended squitter, the ability to send
ADS-B/1090ES data. This requires an
external GPS (certified GPS units only).
Mode S transponders with 1090ES
capability can always send ADS-B data out
but may not be able to receive ADS-B data
in to receive traffic information. The actual
data out and data-in capabilities for each
model are shown out in the table above.
l – Elementary surveillance, i.e. basic
position reporting derived from SSR radar,
enhanced in the case of a Mode S
environment with higher resolution (25')
pressure altitude, unique ICAO aircraft ID
and other Mode S capabilities. Note that
this is different than 1090ES/ADS-B data-
out capabilities.
s – Surveillance Identifier (SI) code. Used
by Mode S transponders and Mode S
equipped SSR to limit interrogations to
specific transponders.
EUROCAE ED-73C, EUROCAE ED-14F (RTCA
DO-160F), RTCA DO-181D, RTCA DO-260B
ED-12B (RTCA DO-178B) Level B
11 – 33 Volts DC. Typical 6 Watts @
14Volts.
95% @ +50°C for 6 hours; 85% @ +38°C for
16 hours.
Tested to Category A in DO-160F
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