A-037-1G

A-037-1G System Overview

The A-037-1G is a primary transmitting–receiving unit of the A-037 radio altimeter system designed to measure true altitude above terrain, water, and uneven surfaces on aircraft and helicopters.

A-037-1G Measurement Function

The unit operates using continuous-wave radar with frequency modulation, transmitting a signal toward the surface and processing the reflected return to generate real-time altitude data for onboard systems and crew indication.

A-037-1G Aircraft Application

The transceiver is installed on fixed-wing aircraft and helicopters, including Mi-8, Mi-17, and Mi-171 platforms, as part of onboard radio altimeter systems for low-altitude flight monitoring and safety control.

A-037-1G System Integration

The unit functions as the core electronic module of the A-037 system, integrating transmitting, receiving, signal processing, and monitoring circuits, and interfacing with cockpit indicators and warning systems. The product is also known under alternative designations A-037-1G, A037-1G, A 037 1G, and A-037-1G Transceiver.

Product Type: Radar altitude measuring unit
Part Number: A-037-1G
Function: Measurement of true altitude above ground or water
Operating Principle: Continuous-wave radar with frequency modulation

Operating Altitude Range: 20 to 300 m
Residual Altitude (H₀): 7.2 m

Measurement Error (95%):
– ≤20 m (H1/H3 outputs): ±0.6 + 0.05·H
– >60 m: ±0.6 + 0.05·H
– 0 to 20 m analog indication: ±2 m

Calibration Error on K-5 delay line:
– Analog outputs H1/H3: ±(0.3 + 0.03·H)
– Indicator calibration: ±0.05·H

Overall Sensitivity on K-5 line: ≥87 dB
Altitude Pulse Outputs (1RS/2RS): 5 to 750 m

Danger-Altitude Signal Error:
– 0 to 20 m: ±1 m
– Above 20 m: ±2 m

Aural Signal Duration: 3 to 9 s
Indicator Backlight: White / Red
Control-Mode Altitude Indication: 15 ± 2 m

Power Consumption (max):
– 115 V 400 Hz supply: 10 VA
– 27 V DC supply: 30 W

Unit Mass: 6.8 ± 0.3 kg

Application / Where Used: A-037 radio altimeter system (variant 04)
Compatible Aircraft / Equipment: Mi-8, Mi-17, Mi-171 helicopters and other aircraft
Technical Documentation: Passport and operation manual

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In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.