Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 350

29
CESSNA 400 TRANSPONDER PILOT'S OPERATING HANDBOOK
AND ALTITUDE ENCODER (BLIND) SUPPLEMENT
SECTION 5
PERFORMANCE
There is no change to the airplane performance when this avionic
equipment is installed. However, the installation of an externally mounted
antenna or several related external antennas, will result in a minor
reduction in cruise performance.
6
1 October 1979