78I3 B
 What can be the visual observation of a condition whereby it may be possible to initiate a reliable Inmarsat TELEX transmission but a voice transmission may not be possible?
A. An indication on a meter or on the display terminal of high transmit power.
B. An indication on a meter or on the terminal of low receiver signal strength.
C. An indication of a very high antenna elevation on the display terminal screen.
D. An indication that the antenna has reached its maximum travel in one direction.
