if is difficult to use the simplr AGv SYSTEM available on the ANACOM1/2 board with an SSB transmissio because
a. the AGV circuit requires both sideband to be present to control the receiver gain.
b. the AGV system requires the incoming signal to contain a carrier component.
c. the frequency is too high and AGV system cancot make the receiver gain respond fast ennoudgh.
d. the BFO produces a constant level of output signal.