Why are program circuits, using telephone lines, usually fed in at a level of about 12 milliwatts? ... If the power output of a modulator is decreased from 1000 watts to 10 watts, how is the power loss expressed in db? 16. ... Draw a simple schematic diagram showing a method of coupling a modulator tube to a radiofrequenoy power amplifier tube to produce plate modulation of the amplified radio frequencyanbsp;...
|Title||:||Study manual for commercial radio operators examinations|
|Author||:||C. Radius, L. Warner|