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Originally Posted by OKO
The only simple thing I know about dB is : each more 3dB, you have twice the sound level
So, 10 dB is a bit more than 10 times the sound level
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Actually, 3dB=2x is the approximation and 10dB=10x is the exact version. What most people forget with decibels is that it is really a variant of the
bel, which is a logarithmic measure of intensity. The "deci" is a prefix which means 0.1. 1 bel (10 decibels) therefore means 10^1=10x the intensity of 0 bel, 2 bel (20 decibals) is 10^2=100x the intensity of 0 bel.
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But in DW, it's NOT 10 dB beetween KILO and Improved, it's 5 dB (with LWAMI) just take a look at the graphical chart.
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No, the difference is 5 PSL. I remember seeing those charts and they are measured in the game unit PSL. Each PSL = roughly 2dB, as LW confirmed up there, so it is 10dB = 1 bel = 1 order of magnitude = 10 times quieter.
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But what does it mean in the game :
you can detect a KILO with another KILO at ~12 miles, but you won't be able to see any improved KILO on passive sonars of a KILO.
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The Kilo's passive sonar was never very good (small, cylindrical...) - my question would be whether it is appropriate for a KILO to detect another (presumably slow moving) Kilo at 12 miles.
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I have one question for Luftwolf : are the conformal and cylindrical the same on KILO and on improved KILO in DW ?
I ask this because improved KILO are supposed to have improved sonar suit IRL.
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The upgrade AFAIK is mostly software and processing. You can check that one for yourself by downloading DWEdit and actually taking a look see in the database - get it at SubGurus. Or maybe I'd check for you and let you know after my computer finishes its current defrag.
Yes, all Kilos have a:
MGK-400 Active Sonar
generic Active Intercept
MGK-400PBB
MRM-25EM ESM
Visual
MRK-50 radar
MGK-400 PNB
OK, if you wanna do the switch, here are some
recommendations
Yes, I know the above site is in Japanese and it unfortunately went out of business, but it is the only one I have. Translating the important bit, the 636 is supposed to be twice as quiet as the 877EKM (which may be a export version but it is still a hell of a lot newer than the baseline Kilo). The sonar is 2.5 times as sensitive. there is already an unused Improved Kilo sonar which has no changes over the original, so change Nrd detection on that sensor from -13 now to -15, and make the new Kilos use it.