Can anyone know where i can get Technical/Service manuals for Magnavox's
RT-1146 and C9533 UHF/AM transceivers.There are use,i think,on military aircraft.
Contact Phillips it's one of their brands. If it's not too old they may have manuals for it. If you can find the full military designator you might find more information using it.
I may be wrong, but the military heritage of these devices might preclude your ability to obtain anything on them. I would concur with the advice offered by mrmeval.