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User manual: Installation and Operation of Direction Finder System RHOTHETA RT-600 / SAR-DF 517
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2.3.2
ETS Pages
The Law Enforcement version of the RT-600 system is supporting the tracking of ETS transmitters.
If an ETS frequency has been selected, the bearing window for ETS opens. Its operational use is similar to the
standard bearing window.
2.3.3
Med Track Pages
“Med Track”, patient tracking, allows to track persons wearing a small transmitter helping to recover them e.g. in
cases of disorientation or unconsciousness.
If a medical tracking frequency has been selected, the standard bearing page is slightly modified:
AutoSquelch during Med Track Operation
(1)
The squelch level is set automatically, indicated by a letter >A<
above the squelch level marker. It is recommended to leave the
squelch in automatic mode.
(2)
To reactivate the automatic squelch mode after unintentional
manual modification of the squelch level, manually increase the
squelch level through the >SQL< rotary switch to the maximum
value (60 %).
There are no special functional options available.
Reception of a signal above squelch level is indicated by an acoustic signal (beep tone).
Med Track frequencies always have to be selected through the MEMORY page, i.e. the receive frequency has to
be a memory channel, selected through the frequency selection page.
2.3.4
Law Enforcement Scan Mode
If the Law Enforcement Scan Mode has been selected, the receiver scans ETS and LoJack frequencies for
signals.
On the LoJack frequency, the receiver is staying receiving for a longer period of time. The scanning criterion is
the reception of a LoJack VLU signal with valid LoJack ID.
On the ETS frequencies, normal manual squelch settings for ETS frequencies are used, and the scan mode
stops as soon as a signal is being received.
Reception of signals, which stop the scan mode, will result in the appropriate bearing page to be activated.
Frequency
Application
Criterion
Country-Specific LoJack-Frequency LoJack
Valid LoJack ID
216.4875 MHz ETS
Squelch Level
216.5125 MHz ETS
Squelch Level
219.930 MHz ETS
Squelch Level
219.960 MHz ETS
Squelch Level