OPERATION – WITH EXTERNAL ALARM
TO ACTIVE-X ANTENNA
BROWN
SWITCH
CONNECT ‘LNK’ TO ‘BN’TERMINAL. INCLUDE
SWITCH IN CIRCUIT TO GIVE ON/OFF
CONTROL OF EXTERNAL ALARM FACILITY
BLUE
SHIPS SUPPLY
+12V
0V
PWR
RTF
0V +12V LNK BL BN
EXT ALRM
SWITCHED
CONTACT
(RELAY) FOR
EXTERNAL ALARM
RTE CONNECTIONS
The diagrams show the correct wiring installation
TECHNICAL SPECIFICATION
CONTROL BOX
SWITCH
SHIPS
SUPPLY
LAMP
EXTERNAL ALARM
+12V
-12V
▲
PERFORMANCE CHECK
As the RCS of your vessel may exceed the RCS of the RTE, the
trial is best carried out at 0.5 nm as the target can be easily
identified. The range should then be increased at intervals of
0.5 nm and the RTE switched on and off noting the change in
response. As the range increases the bare target will not be
seen and whilst moving the RTE is left on so that the test target
can be seen at all times. This is important in busy waters to
avoid confusion with other vessels.
If the target is lost it can be acquired by turning the RTE on and
off and watching the display for change in target response. In
normal weather and sea conditions, with RTE and interrogating
radar mounted at four meters above sea level should respond
on the radar screen as shown below. If the mounting heights,
including that of the interrogating radar vary so will the response
due to curvature of the earth. These figures are for guidance
only and should not be relied upon.
2KW radar up to 4 nm :
5KW radar up to 10 nm :
10-25KW radar up to 15-30+ nm
DO NOT EXPECT
to always see by the naked eye the vessel
or land based interrogating radar which may be +/– 30 miles
away and principally below the horizon. Reports of 60 miles
reception have been recorded.
ACTIVATION BY VESSELS OWN RADAR
It is to be expected that use of the vessels own radar will
illuminate the green and possibly the yellow LED. The RTE
will treat this as a third party radar and will continue to receive
and respond to all other radar.
DIMENSIONS and WEIGHTS
Antenna length:
478mm
Antenna width:
40.5mm
Antenna weight:
327gms (excluding cable)
Control Box width:
92mm
Control Box height:
51mm
Control Box depth:
38mm
Control Box weight:
99gms
Cable length:
25m 2 core 0.5mm
2
Cable weight:
967gms
Reception frequency:
X Band Radar 9.3 - 9.5 GHz
Operating Temperature:
- 20 to + 60 degrees C
Voltage:
12V DC - + 30% - 10% (voltage
surge and cross polarity protected)
Current consumption
in quiescent state:
<15mA
Current consumption
X Band Radar 190mA (typically)
when transmitting
Position accuracy:
Within 1 metre
EIRP:
1W (typically)
Exceeds ISO 8729-2 effective July 09 - X Band Radar 7.5m
2
at Zero, +/-10 and 20 degrees of heel maintained over a total
angle of 280 degrees.
STATED PERFORMANCE LEVEL (SPL)
Typical performance –
QinetiQ Funtington Anechoic Chamber March 2010
X BAND RADAR SPL
S BAND RADAR SPL
(ISO Standard 7.5m
2
)
(ISO Standard 0.5m
2
)
Zero degrees:
111.36m
2
Zero degrees: 6.26m
2
+/- 10 degrees: 78.96m
2
+/- 10 degrees: 6.44m
2
+/- 20 degrees: 20.80m
2
+/- 20 degrees: 5.36m
2
FAULT FINDING CHART
No Red LED light when red switch
Check fuse or circuit breaker
Damaged cable or wrong connection
is turned on
Check polarity of wiring
Cable cut with power on check fuse
Check power supply at control box
Unit switched on and continuous green
Local radar on, or radar operating moored nearby (<15M)
LED light shows, in harbour or when
Moored close to large metal object
Check polarity of radome wiring
saturating RTE
Relocate vessel to more suitable position
Unit on and buzzer on and unit fails to
Check all above faults. Is RTE in shadow of interrogating radar as it
operate when it clearly is interrogated
will not operate if masked
Buzzer switched on but does not sound
Buzzer faulty – return control box to Echomax for inspection
when painted by radar
Base fitting: female
1 inch – 14 NF thread
✔
✘
✘
✘
✘
✘
✘
✘
✘
✘
✔
✔
✔
✔
✔
✔
✔
✔
RADAR
MOUNTING
RTE Mast top – horizon (not response) +/- 25 miles
Pushpit – horizon (not response) +/- 4–6 miles.
Lower installations may require trial and error to find the best
location and may be subject to slight shadowing.
28˚
14˚
14˚
BASIC OPERATION – NO EXTERNAL ALARM
PWR
RTF
BROWN
SHIPS SUPPLY
TO ACTIVE-X ANTENNA
BLUE
+12V
0V +12V LNK BL BN
0V
