Is this the SD radar scope?

jdkbph · 07-17-07, 02:33 PM

Interesting...

That link you provided says this:

Long-wave aircraft warning sets. SD-a, SD-1, and SD-2 are installed on submarines and give range only. SD-3, for small auxiliaries, supplies range and bearing. All sets are equipped with "A" scopes, and have provisions for IFF (identification) connections.

And that has always been my understanding. SD uses an A scope.

Now I know that early SJ used an A scope as well, but more familiar (in connection with SJ) is the PPI introduced in '43 I think.

That's why I associated the A scope in SH4 with SD and the PPI with SJ. There is no reason that I know of to run both displays simultaneoulsy for any one system... ie, it makes no sense to say both the A scope and PPI are for the SJ.

And that leads me to believe the current SD implementation (system is always on, no display - just a text type contact report) is a last second hack job and not a real "as intended" fix.

Thoughts?

JD

Jace11 · 07-17-07, 02:42 PM

yeah I think it has a tiny A scope in that tube...

No bearing, just range.. I think..

elanaiba · 07-17-07, 04:39 PM

When the SJ-1/a with PPI arrived, the A-scope was still used to get a more precise idea on "what's out there". The PPI makes it sometimes hard to distinguish between multiple blobs/targets.

In the meantime, the SD was generally moved to the Command Room.

07-17-07, 02:33 PM	#1
jdkbph Captain Join Date: Mar 2007 Posts: 508 Downloads: 104 Uploads: 0	Interesting... That link you provided says this: Long-wave aircraft warning sets. SD-a, SD-1, and SD-2 are installed on submarines and give range only. SD-3, for small auxiliaries, supplies range and bearing. All sets are equipped with "A" scopes, and have provisions for IFF (identification) connections. And that has always been my understanding. SD uses an A scope. Now I know that early SJ used an A scope as well, but more familiar (in connection with SJ) is the PPI introduced in '43 I think. That's why I associated the A scope in SH4 with SD and the PPI with SJ. There is no reason that I know of to run both displays simultaneoulsy for any one system... ie, it makes no sense to say both the A scope and PPI are for the SJ. And that leads me to believe the current SD implementation (system is always on, no display - just a text type contact report) is a last second hack job and not a real "as intended" fix. Thoughts? JD Last edited by jdkbph; 07-17-07 at 02:53 PM.

07-17-07, 04:39 PM	#3
elanaiba Ace of the Deep Join Date: Mar 2005 Location: Bucharest, Romania Posts: 1,058 Downloads: 3 Uploads: 3	When the SJ-1/a with PPI arrived, the A-scope was still used to get a more precise idea on "what's out there". The PPI makes it sometimes hard to distinguish between multiple blobs/targets. In the meantime, the SD was generally moved to the Command Room. __________________ With strength I burn...

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07-17-07, 02:42 PM	#2
Jace11 Seasoned Skipper Join Date: Mar 2005 Location: UK Posts: 683 Downloads: 104 Uploads: 1	yeah I think it has a tiny A scope in that tube... No bearing, just range.. I think..