Technical data

B KY 96A, KY 97A
Rev 5, Apr 2003 MM 006-05674-0005.dwd Page 5-11
Load L107 tune L105
Load L105 tune L107
Adjust T101, T102, T103, and T104 for maximum ACG voltage. During the
above adjustments, the RF signal should be reduced to keep the AGC voltage
near 4.75 volts.
5.4.6.2 Noise Squelch Adjustments
Apply 2.0 uV (Hard) of RF modulated 30% with 1 kHz and adjust R176 CW until
the receiver just breaks squelch (audio present).
5.4.6.3 Carrier Squelch Adjustments
Apply a 128.50 MHz, 12.5 uV (Hard) signal into the antenna connector modu-
lated 85% at 8 kHz and slowly adjust R184 until squelch just breaks (audio
present).
5.4.6.4 Climax Filter Adjustments
Apply a 128.50 MHz, 100 uV (Hard) signal modulated 85% at 4.5 kHz. Disable
the compressor/ squelch. Monitor the audio output with an audio wattmeter.
Adjust L110 for minimum output (Null).
5.5 OVERHAUL
5.5.1 Visual Inspection
The following visual inspection procedures should be performed during the course of
maintenance operations.
5.5.1.1 Inspect all wiring for frayed, loose, cracked, or burned wires.
5.5.1.2 Check that cable connections are free of corrosion and are properly secured.
5.5.1.3 Check all components for evidence of overheating, breakage, vibration, cor-
rosion, or loose connections.
5.5.1.4 Check all capacitors and transformers for leaks, bulges, or loose connections.
5.5.1.5 Inspect relay and switch contacts for pits or arcing.
5.5.2 Cleaning
5.5.2.1 Use a clean, lint-free cloth, lightly moistened with an approved cleaning agent
to remove foreign matter from the unit case and front panel. Wipe dry with a
clean, dry, lint-free cloth.
5.5.2.2 Use a hand controlled dry air jet (not more than 15 psi) to blow the dust from
inaccessible areas.