Starfire wrote:
HELP!
I have been reading through this long post without finding what I need. I still hope some of your might know what I need
I am flying an WWII airsim in which we can fly and make campaigns. Right now I am trying to recreate a historical reinactment of the US navys raid on Wake at the 24 of February 1942.
I am trying to find prof of use of IFFF (Identiication Friend or Foe).
I know that the the CXAM-1 experimental radar system was installed in USS Enterprise CV-6. Date unknown but installation of the CXAM started in october 1940. From that I extrapolate that it was installed by february 1942.
(
http://en.wikipedia.org/wiki/CXAM_RADAR)
What I need to know is if the USN aircraft onboard of Enterprise CV-6 had IFF!?
I know that US Navy had an I.F.F. named ABK (US Army name SCR 595) at the time, but was an IFF build into Enterprise's aircraft!?
The Enterprise had a CXAM-1, which was the production unit, not experimental (a bit of semantics as all radar at that time was more or less experimental). Enterprise had her CXAM-1 installed at least as early as November 1941, as the Life photo series taken then show it clearly. It might have been installed as early as June 1941, but the copy of photo K-14254 I have is just too fuzzy to say for sure. It was not there in spring 1941 as we have the Dive Bomber movie photos to confirm this. Note that there was a CXAM and a CXAM-1 set. CXAM (no-1) was the pre-production series. The CXAM had a lighter bed spring and sat in a frame that allowed tilting. CXAM-1 was a heavier bed spring and was at a fixed vertical angle, it could not be tilted. Six CXAM sets were made, and CV-5 and later CV-8 had one installed - in Hornet's case right after Midway. It came from donor battleship California, then laid up for repairs. I believe that IFF systems were in place on all US carriers and combat aircraft by early 1942. The Santa Cruz action report merely makes mention of the fact that the FD fire control radar could not pick it up. OTHER systems could pick it up, namely CXAM and CXAM-1, SC and SA series radars. The report merely mentions that the 5 inch gun controllers had a problem in that the FD radar that they used for fire control could not, at that point, pick the IFF equipped planes out. But the search sets could. Most likely, in early 1942, it was the IFF Mark II transponder, ABD or ABE (aka SCR 535 in Army parlance). The CXAM and SC radars in use at that time had responsors that could interrogate ABE, ABD Mk II. Check this page out:
http://www.history.navy.mil/library/online/radar-13.htm