Technical data

VHF/AM RADIO FSG 2T
3 Installation
June 2014 FAV_D10048 23
3.4 Mechanical Installation
3.4.1 Transceiver installation
Any radio installation into an aircraft shall be coordinated with both the licensed
Inspector who certifies the installation, and with the aircraft manufacturer's installation
instructions.
Certifying the aircraft installation may be subject to specific National Regulations.
The FSG 2T VHF/AM transceiver is designed to be installed rigid into the instrument panel
or operating console from its rear side into a standard 2¼ inch / 58 mm diameter
instrument hole. Shock-mounts are not required, even not for helicopter installation. For
dimensions and positioning of the 4 fixing holes refer to Figure 3 - 3.
Select a radio location distant to heat sources. All equipment controls shall be readily
accessible from the pilot's normal seated position. The appropriate operator / crew
member(s) shall have an unobstructed view of the display and access to the control
knobs when in the normal seated position.
Sufficient room (at least 220 mm / 9 inches) behind front panel must be left for wiring
accommodation. Fixing of the transceiver is achieved by use of 4 cross recessed Pan
head screws M4 x 20 mm (supplied). These screws are sufficient for panel thickness
between 3 mm and 7 mm (1/8 … 5/16 inch).
3.4.2 Compass deviation
Compass deviation caused by FSG 2T is less than 30 cm for 1° deflection.
(Category Z in accordance with EUROCAE ED-14D / RTCA DO-160D environmental
test conditions).
Compass Deviation
Distance
0.5°
12 cm / 4.73 in.
1.0°
7 cm / 2.76 in.
1.5°
< 7 cm / 2.76 in.
2.0°
< 7 cm / 2.76 in.
2.5°
< 7 cm / 2.76 in.
3.0°
< 7 cm / 2.76 in.
Fig. 3 - 2: Deviation of a compass by a transmitting FSG 2T; depends on the distance
between compass center and contour of transceiver
0
1 2
5
10
13
0.5
1.0
1.5
2.0
2.5
3.0
x
x
Distance
[cm]
Compass
Deviation
[ ° ]