NILECJ Standard for Mobile FM Receivers: A Voluntary National StandardU.S. Department of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice, 1975 - Government publications - 14 pages |
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Page 5
... intermediate frequency of the receiver and 1000 MHz . 4.6.4 . Intermodulation Attenuation The intermodulation ... frequency , both signals being at frequencies either above or below the on - channel signal . 4.7 . Squelch Characteristics ...
... intermediate frequency of the receiver and 1000 MHz . 4.6.4 . Intermodulation Attenuation The intermodulation ... frequency , both signals being at frequencies either above or below the on - channel signal . 4.7 . Squelch Characteristics ...
Page 10
... frequency . Then increase the output of the generator to approximately 0.1 volt , and slowly vary the generator frequency continu- ously from just below the lowest intermediate frequency of the receiver to 1000 MHz . Note each frequency ...
... frequency . Then increase the output of the generator to approximately 0.1 volt , and slowly vary the generator frequency continu- ously from just below the lowest intermediate frequency of the receiver to 1000 MHz . Note each frequency ...
Common terms and phrases
1-millivolt output 12 dB SINAD accordance with paragraph Adjacent channel selectivity adjust the receiver adjust the squelch audio distortion audio hum audio noise output AUDIO OUTPUT LOAD audio output power Audiofrequency Response dB 10 dB dB 6 dB dB SINAD ratio Enforcement and Criminal equipment as shown expressed in decibels FM signal frequency counter frequency deviation hum and noise Interconnect the receiver intermediate frequency intermodulation attenuation measure the audio mobile FM receivers Modulate the FM Modulation Acceptance Bandwidth noise output power output level output power item power supply voltage receiver and test RECEIVER UNDER TEST selectivity and desensitization Sensitivity Test shown in figure simple harmonic motion SINAD sensitivity SPST switch spurious response attenuation squelch attack Squelch Block squelch control Squelch Release STANDARD AUDIO OUTPUT standard power supply standard test frequency standard test modulation standing wave ratio temperature test equipment Test Interconnect TEST STANDARD AUDIO Threshold squelch sensitivity Tight squelch sensitivity unsquelched μν