TRT800H Installation and Operation
29
Dokument-Nr.: 03.2121.010.71e / Revision: 1.03
6.5 VFR – Visual Flight Rules
For model variants refer to 1.3 Survey of Variants.
Equipment from SW3.00
The transponder features a user-defined squawk code for VFR-flight
(factory setting: 7000):
• Activate VFR mode and VFR squawk:
Press VFR in normal mode.
• Return to normal mode:
Use VFR key or any rotary knob (VFR squawk remains active).
• Save active squawk as VFR squawk:
Keep VFR pressed until “S” is displayed (3 s);
after releasing the key, VFR mode is activated.
Equipment prior to SW3.00
The transponder supports two VFR modes:
• VFRD (“D” = Deutschland), automatic squawk, switching
below/above 5000 ft (0021/0022)
• VFRW (“W” = World), squawk value user defined
VFRD/VFRW functions:
• Activate VFRD/VFRW:
Press VFR once (in normal operation).
• Activate alternative Squawk (VFRW or VFRD):
Press again.
• Return to normal mode:
Use any other key or rotary knob
• Store active squawk value as VFRW squawk:
Press and hold VFR for 3 s in normal operation mode;
VFRW mode is activated after releasing.
Note
When VFR is activated, the previously active squawk code is stored as
stand-by squawk. However it is not visible as it is hidden by the
appearing VFR indication.
After leaving VFR mode, the previously used squawk can be activated
again by pressing
.
