Key Topic 78: Measurement Procedures Flashcards
3-78L1: Can a P25 radio system be monitored with a scanner?
A. Yes, regardless if it has P25 decoding or not.
B. No.
C. Yes, if the scanner has P25 decoding.
D. Yes, but it must also have P26 decoding.
C. Yes, if the scanner has P25 decoding.
3-78L2: Which of the following answers is true?
A. The RF Power reading on a CDMA (code division multiple access) radio will be very accurate on an analog power meter.
B. The RF Power reading on a CDMA radio is not accurate on an analog power meter.
C. Power cannot be measured using CDMA modulation.
D. None of the above.
B. The RF Power reading on a CDMA radio is not accurate on an analog power meter.
3-78L3: What is a common method used to program radios without using a “wired” connection?
A. Banding.
B. Using the ultraviolet from a programmed radio to repeat the programming in another.
C. Infra-red communication.
D. Having the radio maker send down a programming signal via satellite.
C. Infra-red communication.
3-78L4: What is the common method for determining the exact sensitivity specification of a receiver?
A. Measure the recovered audio for 12 dB of SINAD.
B. Measure the recovered audio for 10 dB of quieting.
C. Measure the reovered audio for 10 dB of SINAD.
D. Measure the recovered audio for 25 dB of quieting.
A. Measure the recovered audio for 12 dB of SINAD
3-78L5: A communications technician would perform a modulation-acceptance bandwidth test in order to:
A. Ascertain the audio frequency response of the receiver.
B. Determine whether the CTCSS in the receiver is operating correctly.
C. Verify the results from a 12 dB SINAD test.
D. Determine the effective bandwidth of a communications receiver.
D. Determine the effective bandwidth of a communications receiver.
3-78L6: What is the maximum FM deviation for voice operation of a normal wideband channel on VHF and UHF?
A. 2.5 kHz.
B. 5.0 kHz.
C. 7.5 kHz.
D. 10 kHz.
B. 5.0 kHz.
