Aviation aux Etats-Unis : amélioration technologique et sécurité, 1930-1939. - 24 photos - Photo n° 228651
Photo n°
228651
:
WATCH YOUR CREDIT *WIDE WORLD PHOTOS* WASHINGTON BUREAU 5-25-31. A NEW T-TYPE ANTENNA FOR AIRPLANE RADIO RECEPTION, TO REPLACE THE COMMONLY USED VERTICAL POLE APPARATUS, CONTAINING THE GOOD FEATURES OF THE OLD DEVISE BUT ELIMINATING THE POSSIBILITY OF ICE FORMATION AND VIBRATION TROUBLE, HAS BEEN PERFECTED BY THE BUREAU OF STANDARDS AT WASHINGTON. R. M. GREEN, JR., ASST. RADIO ENGINEER, BUREAU OF STANDARDS. IS SHOWN SEATED AT THE RADIO CONTROL WHILE WM. LA VINOLETTE, RADIO ASST., ARRANGES THE NEW ANTENNA. [Actualit] [Wide World Photos] [735109]
