RHOTHETA User Manual RT-800
Page 49 of 192
Designation of the currently active scan mode
Main bearing frequency (currently active)
Monitoring frequencies
Fig. 24 “Monitoring” mode. Indication of frequencies
If the Monitoring (normal) function is activated, the DF system switches alternating from the
main bearing frequency to the selected monitoring scanning frequencies (s. 6.2.2.1).
The currently monitored frequency is displayed highlighted in green, so you can see, which
frequency is active at a given moment (s. Fig. 24).
A frequency will be monitored for 3 seconds if ELT/PLB is not activated, and 10 seconds if
ELT/PLB is activated.
If a signal is received during monitoring, the bearing value is indicated on the “Bearing” page
for 30 seconds.
o
In order to interrupt the current reception, press the “ESC” button. The system will
continue with the next monitoring frequency.
Active reception will be interrupted after 30 seconds for a short moment in order to examine
the other monitoring frequencies (safety function). This behavior can be changed under
“Monitoring Settings” (s. 6.2.2.4, “Edit Scan” hotkey-description).
If the signal is lost during the monitoring procedure, the scanning process continues with the
next frequency/channel after 30 seconds (depending on the settings of the bearing indication
time and how many seconds (e.g. of 30 s - period) have already elapsed until the signal was
interrupted).
Monitoring” On
Active frequency:
Main frequency = 131.510 MHz
Signal is received
“Monitoring” On
Active frequency:
Main frequency = 131.510 MHz
Signal has just interrupted
“Monitoring” On
Active frequency:
Monitoring frequency = 121.500 MHz
Signal is not present
Fig. 25 “Monitoring” mode. Example views of the “Bearing” page
o
If at some point of scanning procedure the signal on the desired frequency is received,
and monitoring of other frequencies is not desired anymore, press the “OK” button. The
