|Category:||Head-Up Display [HUD]|
|Object Name:||A-4 HUD Cathode Ray Tube|
|Manufacturer:||Rank Electronic Tubes|
|Year of Manufacture:||1976|
|Location:||Archive Object Store|
Mf No. G-0528-J2
Ser No. 64964
Date Code 7631
Mod Status A+CN45117
Buyers Part 27489
This CRT shows a green resistive helix in the beam focusing region of its neck which indicates it has the "monocon" gun design; this was found to have significant disadvantages in HUD applications and was abandoned for production HUDs.
In common with most of the CRT’s it was supplied by Rank. The deflection yoke was probably supplied by Muirhead but this and the Matching Card were separate items in the early PDU.
"27489" is a defunct CAGE code for the Rochester site but although it infers the Rochester site specified the CRT requirements, it is certainly not the Buyers Part [number].