"SJ" and "SD" radar - what does it stand for?

04-23-08, 02:36 PM

I hear the terms all the time, but what exactly does SJ and SD stand for?

Quillan · 04-23-08, 03:37 PM

I'm not certain they stand for anything. I think they're probably just a code designation that has no meaning beyond model and series. S might for instance refer to all ship radar, with the D and J referring to specific models within the group.

Raptor1 · 04-23-08, 03:44 PM

I also believe that it does not stand for anything, I think surface ships' equivilant was called the SG Radar, and the model that succeded the SD Radar was called the SV Radar...

The S stood for S-Band while the other letter stood for the model as far as I know

kylesplanet · 04-23-08, 05:48 PM

The SD radar got its name from the crew. Each time the radar picked up a plane the crew screamed SH*T! DIVE!!! Hence the acronym, SD.
:rotfl: :rotfl:

V.C. Sniper · 04-23-08, 06:04 PM

^ I LUL'D!!1!1 :rotfl: :rotfl: :rotfl:

Nisgeis · 04-24-08, 06:27 AM

There are two main groups of radar, search and fire control. Fire control radar is prefixed with an F and search radar is prefixed with an S. The second letter is usually the model of search radar, so the SJ radar is search radar, model J (model 10). Fire control radar used to be denoted by letters, but was standardised to be numbered instead, so what used to be called an FC or FD would subsequently be called just a Mark III or Mark IV.

Any number after the S<letter> system is a modification. So, SJ-1 is the first modification to the SJ radar set, which increased range.

04-23-08, 02:36 PM	#1
Zayphod Stowaway Posts: n/a Downloads: Uploads:	"SJ" and "SD" radar - what does it stand for? I hear the terms all the time, but what exactly does SJ and SD stand for?

04-23-08, 03:37 PM	#2
Quillan Samurai Navy Join Date: Apr 2005 Posts: 579 Downloads: 2 Uploads: 0	I'm not certain they stand for anything. I think they're probably just a code designation that has no meaning beyond model and series. S might for instance refer to all ship radar, with the D and J referring to specific models within the group. __________________ We, the unwilling, led by the unknowing, are doing the impossible for the ungrateful. We have done so much, for so long, with so little, that we are now qualified to do anything with nothing.

04-23-08, 03:44 PM	#3
Raptor1 Navy Seal Join Date: Jul 2007 Location: Stavka Posts: 8,211 Downloads: 13 Uploads: 0	I also believe that it does not stand for anything, I think surface ships' equivilant was called the SG Radar, and the model that succeded the SD Radar was called the SV Radar... The S stood for S-Band while the other letter stood for the model as far as I know __________________ Current Eastern Front status: Probable Victory

04-23-08, 05:48 PM	#4
kylesplanet Commodore Join Date: May 2007 Posts: 629 Downloads: 39 Uploads: 0	The SD radar got its name from the crew. Each time the radar picked up a plane the crew screamed SH*T! DIVE!!! Hence the acronym, SD. :rotfl: :rotfl: __________________

04-23-08, 06:04 PM	#5
V.C. Sniper Watch Officer Join Date: May 2007 Posts: 339 Downloads: 1 Uploads: 0	^ I LUL'D!!1!1 :rotfl: :rotfl: :rotfl: __________________ I only need one torpedo.

04-24-08, 06:27 AM	#6
Nisgeis Ocean Warrior Join Date: Jan 2008 Posts: 2,909 Downloads: 77 Uploads: 11	There are two main groups of radar, search and fire control. Fire control radar is prefixed with an F and search radar is prefixed with an S. The second letter is usually the model of *search* radar, so the SJ radar is search radar, model J (model 10). Fire control radar used to be denoted by letters, but was standardised to be numbered instead, so what used to be called an FC or FD would subsequently be called just a Mark III or Mark IV. Any number after the S<letter> system is a modification. So, SJ-1 is the first modification to the SJ radar set, which increased range. Last edited by Nisgeis; 04-24-08 at 07:49 AM.