Help Topics
General / Radar / Instruments / Navaids / Autopilots / Communications / Fishfinders

2. RADAR
1. After installing my new RADAR, I noticed that the indicated bearing to a target does not agree with the actual bearing. How do I correct this?
2. I have a GPS receiver interfaced with my Raytheon RADAR. When navigating to a waypoint, why does the waypoint identifier jump around on the screen? 
3. In my marina I notice that my pathfinder radar does not show many targets on short ranges.
4. I am concerned that my radar may be harmful when transmitting and people are on the flybridge close to the radar beam.
5. Can I interface my Raytheon radar with my GPS?

1. After installing my new RADAR, I noticed that the indicated bearing to a target does not agree with the actual bearing. How do I correct this?

All Raytheon RADARS require a bearing alignment procedure during initial setup. Please refer to your owner's manual for a description of the setup procedure or to an authorised technician.
 
 


2. I have a GPS receiver interfaced with my Raytheon RADAR. When navigating to a waypoint, why does the waypoint identifier jump around on the screen? 

This condition occurs because the RADAR is using course over ground (COG) information from the GPS to determine the ship's heading. COG is an "average heading" calculated over time, and may not update with the "real time" image on the RADAR screen. This can be corrected on the XX series, RL9, and Autohelm ST50 RADARS with the addition of an electronic fluxgate compass which delivers "real time" heading information. This will stabilise the waypoint symbol on the RADAR screen. Raytheon offers the optional XX heading sensor (fluxgate compass) or the RADARS will also accept heading information from a Raytheon or Autohelm Autopilot via the Seatalk interface. (Seatalk is optional on the RL9, R10XX. and R11XX.) 
 
 
 


3. In my marina I notice that my pathfinder radar does not show many targets on short ranges.

This is probably due to the fact that in a marina or harbour situation you may need to switch STC and GAIN to manual and adjust them as necessary. The STC will need to be lowered to improve the target detection.
 
 
 


4. I am concerned that my radar may be harmful when transmitting and people are on the flybridge close to the radar beam.

Due to the relatively low power of leisure radars this is generally not considered to be a problem, as long as people are a few feet from the scanner unit.
 
 


5. Can I interface my Raytheon radar with my GPS?

All Raytheon radars can be interfaced via NMEA to a GPS, and most can accept Seatalk GPS without the need for any kind of interface box.