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Old 06-22-2020, 02:48 AM   #1
Navy Dude
Join Date: Dec 2014
Location: St. Petersburg, FL
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Default Noob questions about SJ Surface Radar

I got my first SJ radar equipped boat and I want to know all about my new toy...

I turned this on after I left the vicinity of Pearl (I didn't realize that it defaulted to off until I got my first sighting contact the "old fashioned" hydrophone way.)

I switched the set on by manually going to the set and flipping the switch. Actually, I tried the Ctrl T hotkey and didn't see anything in the message window so I tried it again. When that failed I went to the set and flipped the switch.

I now understand that the Ctrl T hotkey actually worked the first time but that no message gets displayed. Trying it again actually turned off the unit.

I see that there are three range settings... is there a downside for selecting anything other than max?

I also see that there are two modes, Sweep & Focus can someone either tell me or point me to an explanation of what the differences are?

Finally, some questions on how this type of Radar is modeled in the game...
1) Will always having this on really attract a lotta flies? It doesn't seem like it should because the Japanese were pretty oblivious to Radar but I'm guessing that in-game that's not really true.
2) Should I turn OFF my SD radar now that I've got the SJ set? I understand that it picked up airborne contacts as well.
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Old 06-22-2020, 06:50 AM   #2
Sea Lord
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I have recently explained elsewhere how the 2 radars are operated (at least in FOTRSU mod but it works that way elsewhere too I think). Please read my response here at post #1363:

In the TMO mod you can raise or lower the SD radar antenna at periscope depth, and there is NO option to turn the radar off AFAIK, it will always be working whatever the radar station looks like. In the FOTRSU mod, as explained in the link above, you can switch off both radars.

When setting max range with the knob you don't get a good idea of the range, I would switch it on middle range and 'sweep'.

Focus: the radar wave is directed in one precise bearing without the radar antenna turning around, this yields a fast update on located targets.
Sweep: The radar antenna turns around to locate all possible targets in a 360° arc. Air targets may also be detected, the blip doesn't differ from that of a ship.
In the FOTRSU mod, when leaving radar station the game always changes from sweep to focus, nothing you can do, but it doesn't matter for target detection. Whatever method the radar uses, all targets will appear on the NavMap as grey icons. Those icons which read "speed very fast" are planes.

Theoretically warships could triangulate your position if more of them detect your radar waves, but I have not seen this in the early war stage during game. Maybe in the late war years.

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