equipment. There is radio equipment suited to every level in the chain of
command. The use of ____________________ has many advantages.
(42. Answer: radio)
43. Radio communications can be quickly set up for operation, can intercon-
nect tactical echelons separated by great distances (e.g., terrain and the
enemy), and can provide high-quality multichannel circuits. Radio lends
itself to concepts of mobility and fast-moving, swiftly changing tactical
situations. The advantages of radio are ________________________ and
(43. Answer: quick installation, mobility)
44. Unfortunately, radio is subject to interference from atmospheric dis-
turbances, jamming, and transmissions from other radio stations. However,
properly allocated frequencies, competent operators, and suitable site selec-
tion will minimize these (advantages) (disadvantages).
(44. Answer: disadvantages)
45. For operating together, radio sets must have a common or overlapping
frequency range, be of the same type modulation, and transmit and receive the
same type of signal. Thus, if two or more radio stations are to be used to
form a radio net and to intercommunicate, they must operate on the same
f__________________ , have the same type of m__________________ , and have
similar or compatible s______________________ .