General Description
Introduction
12 Transceiver Family 620X DV14307.03 Issue 04 March 2016
1.1. Introduction
AR-, RT-, RCU620X VHF Transceivers are a modern family of communication equipment that have
comprehensive capabilities and significantly extend the typical aeronautical transceivers.
Despite its small size and weight the devices include inter alia:
• Sensitive receiver which meets the most recent requirements of ED-23C, including the
ability to work in the offset-carrier (climax) operation in 25 kHz and 8.33 kHz channel
spacing (class H2).
• Receiver includes SCAN (dual watch) mode. This allows simultaneous monitoring of two
different VHF frequency channels without interrupting communication on the active
frequency.
• High efficiency transmitter, which delivers more than 10 W modulated, or un-modulated,
output power at 28 V supply voltage, or 6 W at 12 V.
Lower power consumption allows longer operation from battery.
• Extended built-in intercom which can work as:
o 4-way intercom with isolation mode – passengers could continue conversation or
listening to music from MP3 player at the same time as pilots talk via intercom or
communicate with the tower.
o 2-way intercom for tandem operation – pilot and co-pilot work with separate
controllers and can control their individual audio parameters, like volume or VOX.
This mode is preferred especially for training due to full synchronization of LCD
contents.
• Non-volatile memory for storing:
o 99 channels can be labelled manually for storage of VHF frequencies.
o 9 recently selected VHF frequencies are automatically stored.
For further descriptions we are using following terms for VHF transceivers, VHF remote transceiver
and remote control unit, instead writing their complete model number.
620X in general for the device family.
AR620X for: AR6201, AR6203 (Single Block Transceiver).
RT for: RT6201 (Remote Transceiver).
RCU for: RCU6201 (Remote Control Unit).
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