f.u.n.k.e AVIONICS ATR 833-II LCD

The f.u.n.k.e. AVIONICS ATR833-II LCD is a modern, compact VHF/AM aviation transceiver with 8.33 kHz and 25 kHz channel spacing, specifically designed for installation in the standard 57 mm / 2¼-inch instrument panel cutout. As the successor to the proven ATR833, the ATR833-II combines modern digital signal processing with high transmitter output power, an integrated intercom, Dual Watch functionality and an LCD display that remains highly readable even in bright sunlight.

The transmitter and receiver of the ATR833-II have been completely redesigned and use modern Digital Signal Processing (DSP). Digital processing begins immediately after the first intermediate frequency and is complemented by digital audio signal processing. This provides stable transmitter performance and clear voice communication.

The ATR833-II supports both 8.33 kHz channel spacing and conventional 25 kHz channel spacing, covering the VHF aviation communication frequency range from 118.000 to 136.975 MHz.

With an RF transmitter output power of 6 watts, the compact transceiver provides powerful and reliable communication for a wide range of aircraft.

A particularly useful feature of the ATR833-II is its integrated Dual Watch function. In addition to the active frequency, a second frequency can be monitored simultaneously. This is useful, for example, when another relevant frequency needs to be monitored while remaining on the current airport or FIS frequency.

The integrated voice-controlled intercom supports up to four microphones. Standard and dynamic microphones can be used, providing flexible adaptation to different headset and cockpit configurations.

With suitable headsets, the integrated intercom can be used as a 4-place intercom system. If an external intercom system is already installed in the aircraft, the internal intercom function can be disabled.

Another particularly practical feature is the recording of the most recently received radio transmission. At the push of a button, up to 9 seconds of the last received transmission can be replayed. If a frequency, call sign or instruction was not fully understood, the pilot can simply listen to the last transmission again.

For frequently used frequencies, the ATR833-II provides 20 freely programmable memory locations. Each stored frequency can be assigned an individual name, making frequently used airport, FIS or other frequencies easy to identify and recall.

In addition, the ATR833-II automatically stores the 10 most recently used frequencies, allowing them to be recalled quickly.

A major advantage of this version is the LCD display. It provides excellent readability even in direct sunlight while also offering low power consumption. These characteristics make the LCD version particularly attractive for gliders and other aircraft where the instrument panel may be exposed to strong sunlight or where low electrical power consumption is important.

The matrix display features a resolution of 128 × 64 pixels and provides a clear overview of the relevant radio information.

The ATR833-II can also be fully remote-controlled using the separately available ATR833RT Remote Control Unit. This provides additional installation flexibility, for example in tandem cockpits or when the main radio cannot be installed in an easily accessible position.

With dimensions of only 65 × 65 × 169 mm and a weight of approximately 460 g, the ATR833-II is exceptionally compact and lightweight. Installation is designed for the widely used 57 mm / 2¼-inch round instrument format.

The wide supply voltage range of 11 to 30 V DC allows operation in both 12 V and 24 V aircraft electrical systems.

The ATR833-II LCD is ETSO approved and meets the applicable requirements for use as a VHF aviation communication transceiver.

Features:

Modern VHF/AM aviation transceiver

8.33 kHz and 25 kHz channel spacing

Frequency range: 118.000 – 136.975 MHz

6 W RF transmitter output power

4 W audio output power

Modern Digital Signal Processing (DSP)

Digital audio signal processing

Stable transmitter performance

128 × 64 pixel LCD matrix display

Excellent readability in bright sunlight

Low LCD power consumption

Particularly suitable for gliders

Dual Watch technology

Simultaneous monitoring of a second frequency

Integrated voice-controlled intercom

Intercom for up to 4 microphones

Standard and dynamic microphones supported

Internal intercom can be disabled

Audio input for external audio sources

Recording of the most recently received radio transmission

Replay of up to 9 seconds of the last received transmission

20 named frequency memories

Quick recall of the 10 most recently used frequencies

Remote control via optional ATR833RT Remote Control Unit

Configurable power-saving mode

Compact 57 mm / 2¼-inch installation format

Suitable for 12 V and 24 V aircraft electrical systems

Low weight of only approx. 460 g

ETSO approved

Technical Specifications:

Model: f.u.n.k.e. AVIONICS ATR833-II LCD

Device type: VHF/AM Aviation Transceiver

Display: LCD matrix display

Display resolution: 128 × 64 pixels

Frequency range: 118.000 – 136.975 MHz

Channel spacing: 8.33 kHz / 25 kHz

RF transmitter output power: 6 W

Audio output power: 4 W

Signal processing: Digital Signal Processing (DSP)

Dual Watch: Yes

Intercom: Integrated / voice controlled

Supported microphones: Up to 4

Microphone types: Standard / dynamic

Audio input: Yes

Frequency memories: 20 named memory locations

Recently used frequencies: Last 10 frequencies can be recalled

Last transmission replay: Up to 9 seconds

Power-saving mode: Configurable

Supply voltage: 11 – 30 V DC

Current consumption, receive: approx. 220/120 mA

Current consumption, transmit: approx. 1.3/0.65 A

Dimensions: approx. 65 × 65 × 169 mm

Installation format: 57 mm / 2¼ inch

Weight: approx. 460 g

Remote control: Via optional ATR833RT Remote Control Unit

Approvals / Standards:

ETSO-2C169A

Transmitter Class 4 & 6

Receiver Class C, E, H1, H2

ETSO-2C128

EASA Approval: EASA.21O.10062108

Advantages of the LCD Display:

The LCD display provides excellent readability even in direct sunlight while requiring comparatively little electrical power.

These characteristics make the LCD version particularly suitable for gliders, motor gliders and other aircraft where the instrument panel is exposed to strong sunlight.

For installation positions without direct sunlight, the ATR833-II is also available with a high-contrast OLED display.

Installation:

The ATR833-II LCD is designed for installation in a standard 57 mm / 2¼-inch instrument panel cutout.

Thanks to its wide 11 to 30 V DC supply voltage range, the transceiver can be used with both typical 12 V and 24 V aircraft electrical systems.

Installation must be carried out in accordance with the applicable airworthiness, regulatory and technical requirements for the respective aircraft.

Scope of Delivery:

f.u.n.k.e. AVIONICS ATR833-II LCD VHF Aviation Transceiver

Device connector

Wiring harness and additional installation accessories are available separately unless explicitly stated otherwise.

The f.u.n.k.e. AVIONICS ATR833-II LCD is a modern and compact solution for pilots and aircraft owners looking for a powerful 8.33 kHz aviation transceiver in the standard 57 mm format with excellent sunlight readability. With 6 W transmitter output power, Dual Watch, integrated 4-place intercom, 20 named frequency memories, recall of the last 10 frequencies and a 9-second replay function for the most recently received transmission, the ATR833-II offers a comprehensive range of practical features while weighing only approximately 460 g.