BENDIXKing KY 96A, Maintenance Manual

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B
KY 96A, KY 97A
Rev 5, Apr 2003 MM 006-05674-0005.dwd Page 5-5
NOTE: Disable the audio compressor by grounding pin 10 on P96A1, P97A1.
5.3.2.A. Sensitivity:
5.3.2.A.1 Input a 2 uV standard audio test signal into the unit and monitor receiver audio
while switching modulation off.
S+N/N: 118.000 MHz ______ NLT 6dB
126.975 MHz ______ NLT 6dB
135.975 MHz ______ NLT 6dB
[136.975 MHz] _____ NLT 6dB
5.3.2.A.2 Input a 100 uV standard audio test signal into the unit and monitor receiver
audio while switching modulation off.
Quieting: 126.975 MHz ______NLT 25 dB S+N/N.
5.3.2.B. AGC Characteristics: 126.975 MHz ______ NMT 3 dB
With a standard audio test signal vary from 5 uV to 20,000 uV.
5.3.2.C. Selectivity:
Using the AGC voltage produced by a 3 uV standard signal reference, mea-
sure and record the frequencies which reproduce the AGC REF voltage at 6
dB and 60 dB above the reference input.
5.3.2.C.1 6 dB Bandwidth:
126.975 MHz:
Above
___ > 126.985 MHz Below ___ < 126.965 MHz - 25 kHz units
___ > 126.9895 MHz ___ < 126.9605 MHz - 50 kHz units
5.3.2.C.2 60 dB Bandwidth:
126.975 MHz:
Above
___ > 126.995 MHz Below ___ < 126.955 MHz - 25 kHz units
___ > 127.015 MHz ___ < 126.935 MHz - 50 kHz units
5.3.2.D. Volume Gain Control: Min___NMT 22mV Max___NLT 7.07V into 500 ohms
With Audio Amp board installed Max___NLT 4.5V into 500 ohms
Input a 100 uV standard audio test signal into the unit. Disable squelch by
pulling the volume knob out and monitor the audio output.
5.3.2.E. Audio Distortion: (Optional)
350 Hz = ___NMT 15% 1 kHz = ___NMT 15% 2.5 kHz = ___NMT 15%
Input a 100 uV 85% modulated signal between 350 Hz and 2500 Hz. The dis-
tortion shall be not more than 15% at 7.07 Vrms into 500 ohms. Modulation