pinehilljoe
Senior Airman
- 670
- May 1, 2016
Great photos. Love the vacuum tubes. APS-4 was also used for anti sub/shipping. the bottom photo looks like the Avenger also has a Light, like the Leigh Light.From the start the USN used TBMs equipped with the APS-4 radar (underwing pod ) as a fighter-controller to guide radar-equipped F6Fs and U4Us to near the target aircraft where the fighter could get a good picture on his radar set (APS-6, a simplified APS-4).
This led to the later development of AEW Avengers/Guardians/Skyraiders/Tracers/Hawkeyes.
TBM with APS-4 ( https://www.aef.se/Avionik/PDF-filer/PS18_USN_APS-4_Tactical_use.pdf ):
View attachment 767007
AN/APS-4 without external housing:
View attachment 767012
TBM with APS-3 navigation/night bombing radar ( https://www.aef.se/Avionik/PDF-filer/PS19_USN_APS-3.pdf ):
View attachment 767013
With added searchlight and rockets:
View attachment 767014