It is an AN/APR-4 Radar Intercept Receiver with a CW-26 cover. The AN/APR-4 was built by Crosley an improvement over the AN/APR-1 made by Galvin Inc (later Motorola).
Further reading: AN/APR-4
AN/APR-1 & APR-4 Radar/Comm Surveillance Receiver | N6CC
I finally...
Thank you all for the replies! I figured it was used for some kind of guidance or for tracking radio beacons along the Hump. I don't think it was used in any sort of ELINT function because 42-6323 was converted to a tanker in May 1944 and wouldn't be seeing any combat other than transporting...
What is this antenna/transmitter/receiver... on the nose of early B-29s? The bulge on the nose halfway between the landing gear doors and the window panes.
These B-29s are in India and were some of the first built by the Wichita Plant and deployed to India in April-May 1944. It seems like some...