COMMUNICATION PLUGS AND ADAPTERS 

UK vs. US NATO PLUG

 

Early Swiss Air Force helmets were compatible with British communication systems. They were provided with the so-called "UK (or European), NATO" plug - Type 671.

Other ( current) comm systems need another type of plug, the NEXUS U-174, sometime referred as the "US NATO" Plug.

The UK plug will not fisically mate with the US one, the mating shaft being 0.4 mm wider.

 

Due to this, helmet comm harnesses were/ are configured accordingly.

H-3 (USN) to UK PLUG 

(SE-015 COMM)  

As used with early H-5 helmets while flying

 PL-54/ JK-26

UK  TO BELL PLUG  ADAPTER

As used with early H-5 helmets while flying  EKW

C-36

C-36 COMM ADAPTER 

As used with early H-5 helmets while flying  EKW

C-36

LOW TO HIGH IMPEDENCE ADAPTER

As used with early H-5 helmets while flying  EKW

C-36

HUNTER ADAPTER

WIP WIP WIP