Radar warning question

rfunes · 05-05-07, 03:25 PM

Hi Folks,

I just upgraded my old radar warning generator (FuMB-1) to a Naxos (FuMB-7). Early '44.

I was thinking that now I would have 2 radar warning generators, but it seems that SHIII just removed my old radar to put the new one.

From GWX manual: "Many U-boats in the last few months of the war kept as many sensors as possible to ensure coverage against all known Allied radar frequencies"

Am I doing something wrong? Using GWX 1.03.

Keelbuster · 05-05-07, 04:12 PM

I'm suspicious of the RWR devices in GWX. I once upgraded, and I no longer got the warnings for incoming planes. Since then I've stayed with the first FUMB device, and it's worked just fine.

Paajtor · 05-05-07, 04:21 PM

Quote:

Originally Posted by Keelbuster

I'm suspicious of the RWR devices in GWX. I once upgraded, and I no longer got the warnings for incoming planes. Since then I've stayed with the first FUMB device, and it's worked just fine.

Yeah, I think I noticed that too (using a FuMO-64).
It's the 1st time I'm sailing late war (July '44) on GWX1.03...allthough radar from ships is being detected.

Jimbuna · 05-05-07, 04:52 PM

They should be working fine....both were thoroughly checked out at the beta testing stage....when you upgrade the game only allows one version (stock/vanilla restriction) so naturally the newer one is applied

Kpt. Lehmann · 05-05-07, 05:59 PM

Looking at the sensors.dat file I don't see any problems with the FUMO-64.

I'll put it on my list of stuff to re-check for version 1.04 just in case.

joea · 05-05-07, 06:10 PM

Quote:

Originally Posted by Paajtor

Quote:

Originally Posted by Keelbuster

I'm suspicious of the RWR devices in GWX. I once upgraded, and I no longer got the warnings for incoming planes. Since then I've stayed with the first FUMB device, and it's worked just fine.

Yeah, I think I noticed that too (using a FuMO-64).
It's the 1st time I'm sailing late war (July '44) on GWX1.03...allthough radar from ships is being detected.

Not a problem for me, I got warnings from both planes and ships with FuMo 10 (?).

melnibonian · 05-05-07, 07:07 PM

I get warnings with all radars and RWR. Obviously you need to have the late war sensors and antenas mod enabled for them to work properly.

Chock · 05-05-07, 07:43 PM

While it is true that many U-Boats kept a old few devices installed, it's extremely likely that they'd have dropped the FuMB 1 'Metox' like a proverbial hot rock as soon as they could do, since it actually increased the chance of being detected as allied radar improved...

Check out this German report from 1943:

'Gruppe West reports, as a result of experiments., that the Metox radar interceptor produces radiation of its own, which can be detected at the following distances... 23km at 500m altitude, 33km at 1000m altitude and 50km at an altitude of 2000m.'

Incidentally this was way beyond the 'Metox' useful detection range, effectively making it a liability in many cases, rather than an aid - which is sort of fitting, since it was made by a French company!

Also check out this official order to all German subs sent in summer 1943:

'Use of the Metox and Grandin RWRs is now forbidden in all sea areas.'

With that in mind, the deletion of older RWR devices in GWX is broadly accurate.

In actual fact this emission problem was not the only issue with the early German radar detectors, which emitted an audio warning as well as a visual indication on an oscilliscope. It was often not realised that the audio signal was generated from the pulse repetition frequency of the detecting aircraft search radar. At high PRF it was quite possible for the RWR to generate a warning audio signal which was actually outside the range of human hearing, so if nobody was watching the oscilliscope, thinking they'd get an audio warning too, they'd be in for a shock!

ronbrewer · 05-07-07, 11:50 AM

The following link has some good info:

http://uboat.net/technical/detectors.htm

I know the "Metox transmitting detectable signals" versus the "Lie told by captured British officer" has been tossed around the forum for a while. I think the general consensus is that it was the introduction of 10cm radar (undetectable at the time by German technology) that was the cause of so many losses of 1943 instead of the Metox transmitting signals.

Thanks,
Ron

05-05-07, 03:25 PM	#1
rfunes Swabbie Join Date: Jun 2005 Posts: 9 Downloads: 3 Uploads: 0	Radar warning question Hi Folks, I just upgraded my old radar warning generator (FuMB-1) to a Naxos (FuMB-7). Early '44. I was thinking that now I would have 2 radar warning generators, but it seems that SHIII just removed my old radar to put the new one. From GWX manual: "Many U-boats in the last few months of the war kept as many sensors as possible to ensure coverage against all known Allied radar frequencies" Am I doing something wrong? Using GWX 1.03.

05-05-07, 04:12 PM	#2
Keelbuster Ace of the Deep Join Date: Oct 2005 Location: BA 72 Posts: 1,092 Downloads: 43 Uploads: 0	I'm suspicious of the RWR devices in GWX. I once upgraded, and I no longer got the warnings for incoming planes. Since then I've stayed with the first FUMB device, and it's worked just fine. __________________

05-05-07, 04:52 PM	#4
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,481 Downloads: 63 Uploads: 13	They should be working fine....both were thoroughly checked out at the beta testing stage....when you upgrade the game only allows one version (stock/vanilla restriction) so naturally the newer one is applied __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

05-05-07, 05:59 PM	#5
Kpt. Lehmann GWX Project Director Join Date: Jul 2005 Location: The Republic of Texas Posts: 6,993 Downloads: 124 Uploads: 0	Looking at the sensors.dat file I don't see any problems with the FUMO-64. I'll put it on my list of stuff to re-check for version 1.04 just in case. __________________ www.thegreywolves.com All you need is good men. - Heinrich Lehmann-Willenbrock

05-05-07, 07:07 PM	#7
melnibonian Ocean Warrior Join Date: Jul 2006 Location: Reading UK Posts: 3,473 Downloads: 90 Uploads: 0	I get warnings with all radars and RWR. Obviously you need to have the late war sensors and antenas mod enabled for them to work properly. __________________ http://www.thegreywolves.com/ http://wolvesatwar.com/ Download GWX and other goodies: http://hosted.filefront.com/melnibonian

05-05-07, 07:43 PM	#8
Chock Sea Lord Join Date: May 2005 Location: Under a thermal layer in chilly Olde England Posts: 1,842 Downloads: 0 Uploads: 0	While it is true that many U-Boats kept a old few devices installed, it's extremely likely that they'd have dropped the FuMB 1 'Metox' like a proverbial hot rock as soon as they could do, since it actually increased the chance of being detected as allied radar improved... Check out this German report from 1943: 'Gruppe West reports, as a result of experiments., that the Metox radar interceptor produces radiation of its own, which can be detected at the following distances... 23km at 500m altitude, 33km at 1000m altitude and 50km at an altitude of 2000m.' Incidentally this was way beyond the 'Metox' useful detection range, effectively making it a liability in many cases, rather than an aid - which is sort of fitting, since it was made by a French company! Also check out this official order to all German subs sent in summer 1943: 'Use of the Metox and Grandin RWRs is now forbidden in all sea areas.' With that in mind, the deletion of older RWR devices in GWX is broadly accurate. In actual fact this emission problem was not the only issue with the early German radar detectors, which emitted an audio warning as well as a visual indication on an oscilliscope. It was often not realised that the audio signal was generated from the pulse repetition frequency of the detecting aircraft search radar. At high PRF it was quite possible for the RWR to generate a warning audio signal which was actually outside the range of human hearing, so if nobody was watching the oscilliscope, thinking they'd get an audio warning too, they'd be in for a shock!

05-07-07, 11:50 AM	#9
ronbrewer Mate Join Date: Jul 2005 Location: Dallas, TX Posts: 54 Downloads: 0 Uploads: 0	The following link has some good info: http://uboat.net/technical/detectors.htm I know the "Metox transmitting detectable signals" versus the "Lie told by captured British officer" has been tossed around the forum for a while. I think the general consensus is that it was the introduction of 10cm radar (undetectable at the time by German technology) that was the cause of so many losses of 1943 instead of the Metox transmitting signals. Thanks, Ron