User's Manual

ADR-7050 Pilot’s Guide
2
• Adjustable volume control
• Intercom function that enables the pilot and copilot to communicate with each
other via their headphones without speaker output. This function is only used if
the aircraft’s audio panel does not have an intercom function.
• Auto squelch function with manual override. The ADR-7050’s auto squelch fea-
ture sets a radio noise threshold to silence unwanted noise. The auto squelch level
is set using a maintenance computer. Anything below the set threshold is silenced.
When squelch is deactivated by the pilot, he will hear noise if no signal is pres-
ent on the tuned channel. The ADR-7050 provides indication if the squelch is
broken.
• Stuck mic condition indication. The ADR-7050 detects a stuck microphone
switch if the Push To Talk (PTT) switch is active for more than 35 seconds. If
the switch is stuck, the switch becomes unusable.
The com radio’s volume, squelch setting, sidetone levels, channel spacing and
squelch threshold can be set by the flight system.
NOTE
All ADR-7050 functions are controlled through various Multi-Func-
tion Displays (MFDs). Refer to the AFMS and specific documentation
supplied with your cockpit displays for more detailed instructions.
Nav Radio Features
• VOR receiver operation in the range of 108.00–117.95 MHz in 50 kHz incre-
ments
• Localizer receiver operation in the range of 108.00–111.95 MHz
• Glideslope receiver operation in the range of 329.150–335.00 MHz
• Adjustable volume control
• Nav ID Filtering. When the filter is on, any voice-over is silenced and only the
Morse code identifier is heard. The ADR-7050 decodes the Morse code IDs from
the tuned localizer or VOR stations and sends the alphanumeric station IDs to be
displayed.
VOR, Localizer, & Glideslope Receivers
The nav radio also provides VOR, localizer and glide slope signals to the flight sys-
tem. When in the VOR mode, you can enter an OmniBearing Select (OBS) setting
through the flight system. The VOR receiver determines the appropriate Course
Deviation Indicator (CDI) output to send back to the flight system based on the
received signal and the OBS input. The VOR receiver also outputs the nav audio
signal and automatically decodes the Morse code identifier from the VOR station.
Equipment Description