By 1940, the U.S. called upon the Telecommunications Convention to prohibit amateurs from contacting any other HAMS outside of the United States and banned any portable and mobile operation below 56 MHz. Thus, radio amateurs were denied the use of the air.
Thus, radio amateurs were denied the use of the air. It was at this time that the U.S. banned any portable and mobile operation below 56 MHz. By 1940, the U.S. called upon the Telecommunications Convention to prohibit amateurs from contacting any hams outside of the United States.
By 1940, the U.S. called upon the Telecommunications Convention to prohibit amateurs from contacting any hams outside of the United States. It was at this time that the U.S. banned any portable and mobile operation below 56 MHz. Thus, radio amateurs were denied the use of the air.
By 1940, the U.S. called upon the Telecommunications Convention to prohibit amateurs from contacting any hams outside of the United States. It was at this time that the U.S. banned any portable and mobile operation below 56 MHz. Thus, radio amateurs were denied the use of the air.