6A504 A
The auto alarm receiver is tuned to ____ but is able to respond to signals from ____ to ____ (+/- 12.5 kHz)
A.500 kHz, 487.5 kHz, 512.5 kHz
B.500 kHz, 485.0 kHz, 515 kHz
C.500 kHz, 490.00 kHz, 510 kHz
D.500 kHz, 470.00 kHz, 530 kHz
