Avionics Support Equipment - Cirrus SR20 Pilot Operating Handbook

Cirrus Design
SR20

Avionics Support Equipment

Antennas
Two rod-type COM antennas are mounted to the airplane's exterior;
COM 1 is mounted directly above the passenger compartment, COM 2
is mounted directly below the baggage compartment. These antennas
are connected to the two VHF communication transceivers contained
in the Integrated Avionics Units.
The optional blade-type DME antenna is mounted on the airplane
underside just aft, right of the firewall.
The optional combined loop/sense ADF antenna is mounted to the
underside of the airplane just aft of the main wing spar. The antenna
combines antenna signals into a single signal input to the ADF
receiver.
A sled-type marker beacon antenna is mounted below the baggage
compartment floor and provides a signal to the marker beacon
receiver located in the audio panel. If the optional air conditioning
system is installed this antenna is located below the baggage floor
inside of the airplane.
The transponder antenna is located on the bottom side of the airplane,
just aft of the baggage compartment bulkhead on the RH side of the
airplane.
GPS 1 antenna is mounted directly above the passenger
compartment. If the optional XM system is installed, a combination
GPS 1/ XM antenna is installed in this location. GPS 2 antenna is
mounted just forward of the baggage compartment window. Serials
2127 and subs:, a combination GPS 2 / Iridium antenna is installed in
this location. These antennas are connected to the two GPS receivers
contained in the Integrated Avionics Units.
The optional Traffic System antenna is mounted just above the pilot/
copilot compartment.
If the Avidyne TAS or Garmin GTS 800 Series TAS is installed, a
second blade-type antenna is located on the bottom RH side of the
airplane just forward of the baggage compartment.
The optional Lightning Detection antenna is mounted directly above
the passenger compartment.
The Navigation antenna is mounted to the top of the vertical fin. This
antenna provides VOR and glidescope signals to the VHF navigation
receivers contained in the Integrated Avionics Units.
P/N 21399-004 P/N 21399-004
Revision A1
Airplane and Systems Description
Section 7
7-97 7-97