tknowles Posted November 21, 2015 Share #1 Posted November 21, 2015 Looking for information on the correct microphone for the early ms22001 oxygen mask Thanks Link to comment Share on other sites More sharing options...
northcoastaero Posted November 21, 2015 Share #2 Posted November 21, 2015 Please provide a year or time frame, branch of service, and aircraft. The microphone elements and amplifiers (if used) can vary. Link to comment Share on other sites More sharing options...
tknowles Posted November 21, 2015 Author Share #3 Posted November 21, 2015 As fitted to a p-3 usaaf helmet circa 1952-1953 Link to comment Share on other sites More sharing options...
northcoastaero Posted November 21, 2015 Share #4 Posted November 21, 2015 I believe the microphone element would be the ANB-M-C1 with a rubber (not cloth) covered cable and a PL-291 two pin plug. Hope this helps. Link to comment Share on other sites More sharing options...
BlueBookGuy Posted November 21, 2015 Share #5 Posted November 21, 2015 This was removed from a 1953-dated MS-22001 Link to comment Share on other sites More sharing options...
BlueBookGuy Posted November 21, 2015 Share #6 Posted November 21, 2015 Link to comment Share on other sites More sharing options...
BlueBookGuy Posted November 21, 2015 Share #7 Posted November 21, 2015 Link to comment Share on other sites More sharing options...
tknowles Posted November 21, 2015 Author Share #8 Posted November 21, 2015 In looking at my mask the microphone cavity does not appear large enough for the microphone you show. I believe it is set up for the anb mc1 having a smaller round receptacle. Forgive my ignorance, first foray into jet age helmets. The mask has the earlier green anodized oxygen socket on the hose too. I think this mask probably had the early microphone is there a way to be sure? Also, was there a post ww2 anbmc1 microphone produced with a longer cord for the p helmets? Thanks Link to comment Share on other sites More sharing options...
northcoastaero Posted November 21, 2015 Share #9 Posted November 21, 2015 I believe the M-32 series microphone elements were introduced during the mid 1950s for the MS-22001 and MBU-3/P. The plug at the end of the cable would be a PL-291 and later the PJ-292. Both types had two pins. There was also a later cloth covered Y cable for the mask for use with the P-4B and HGU-2/P helmets. During WWII, the USN/USMC used an ANB-M-C1 style microphone element with a short cable and PL-291 two pin connector on their A-14 masks. Link to comment Share on other sites More sharing options...
Bluespicker Posted November 22, 2015 Share #10 Posted November 22, 2015 Concur with Northcoastaero. Early 1950s the USAF was using the AN/AIC-8 radio system. The AN-AIC-10 replaced the AN/AIC-8 and the switch over to the M-32 microphone from the AN-B-C1. If the P-3 has the U-75 three prong helmet lead then the mask would just plug into the helmet Another possibility is I think called the HS-33A headset which could have a red PL-354 or a black PL-54 single prong plug. If the helmet has the single prong plug, the mask would have a lead to the helmet and a two prong plug that went down the mask and plugged into the aircraft. You need three prongs to the A/C two small for the mic, bigger one for the headset... If the headset was upgrade to the H-75 with the black earcups, that's AN/AIC-10. Link to comment Share on other sites More sharing options...
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