Saigon VHF Radio Station "Dai Vi-Ba Saigon" First Day Cover 1966

VIETNAM CONG HOA  (Republic of South Vietnam) issued on 24 April 1966 two First Day Cover stamps commemorating the installation of the Saigon VHF Radio Station "Dai Vi-Ba Saigon". 

With gradual American escalation of troops from around 200,000 in the beginning of 1966 to over 500,000 by the end of 1967, South Vietnam required improvements to their communication system including the Saigon microwave station. Hence, the 1966 stamps were released for the anniversary of the inauguration of microwave radio, which facilitated better analog television and radio transmissions nationwide.