B4-Yar1

B4-Yar1 is an onboard HF power amplifier designed to amplify the RF output signal of the transmitter as part of aircraft HF radio communication systems of the Yadro family. The unit is a functional component of Yadro-1A1 and Yadro-1G1 systems and is used to achieve the required transmitter output power for long-range HF communication.

The B4-Yar1 power amplifier operates in conjunction with the B1-YAR2-1A transceiver, B5A-Yar1 antenna tuning unit, control panel, and antenna system. The amplified RF signal is supplied to the antenna system through the antenna tuning unit, ensuring efficient radiation and stable simplex radiotelephone communication.

The unit is installed in the aircraft radio compartment and is designed for operation under vibration, temperature variations, and electrical loads typical for aviation equipment. B4-Yar1 is an essential element of the Yadro HF radio station when operating on long-range communication routes.

Purpose: Amplification of RF transmitter output signal in HF radio systems
Systems: Yadro-1A1 and Yadro-1G1 HF radio communication systems
Application: Helicopters and aircraft equipped with Yadro HF radio stations
Product Type: Onboard HF power amplifier
Function: Increasing transmitter output power for long-range HF communication
Operating Band: HF band within radio station operating range
Compatibility: B1-YAR2-1A transceiver, B5A-Yar1 antenna tuning unit, control panel
Installation Location: Aircraft radio compartment
Operating Mode: Simplex radiotelephone communication as part of radio station
Condition: As applicable
Documentation: Manufacturer passport and technical documentation available upon request

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

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.