P-503BS

P-503BS onboard tape recorder

P-503BS is an onboard tape recorder designed for installation on aircraft, ground equipment and stationary facilities for recording speech signals and time information. The recorder is used in voice recording systems where continuous registration of crew communications and associated time reference signals is required. Recorded information may be used for subsequent playback, technical analysis and investigation.

Recording function of P-503BS

The P-503BS records speech signals and time information during operation. In aviation use, the recorder can be connected to onboard communication circuits to capture crew voice communications and related timing signals. The system is intended for continuous recording, allowing speech information to be stored throughout operation of the equipment. The recorder belongs to the P-503B family and is used where wire-based voice recording equipment is specified by documentation.

P-503BS as a modification of the P-503B family

P-503BS is a modification within the P-503B recorder family, which also includes P-503B and P-503BZ versions. The P-503BS version is intended for applications where the recorder configuration differs from the standard P-503B installation. Exact differences between versions should be confirmed through the product passport and applicable technical documentation, since installation layout, protection requirements and equipment composition may vary by system configuration.

Wire recording medium of P-503BS

The P-503BS uses a wire recording medium for storing speech and time information. The recorder operates with wire type 5.4 according to applicable documentation and provides continuous recording for not less than 9 hours. The wire medium moves at a specified linear recording speed, allowing the system to record audio-frequency information in the speech band. This recording principle is characteristic of earlier onboard voice recording systems before the wide use of solid-state recorders.

P-503BS system composition and optional beacon

The P-503BS set may include the UZ P-503BS recording unit, PU P-503BS control panel, mounting frame, wire cassette, empty cassette, cassette case and documentation. The product design allows installation of a PAM-6k underwater acoustic beacon, which can be used to locate the recorder underwater at depths of up to 6000 meters, where specified by system configuration. The exact scope of supply should be checked against the passport and delivery specification.

Identification and ordering of P-503BS

The recorder may be referenced as P-503BS or П-503БС. These designations refer to the same product type. For correct supply, it is useful to specify whether the request concerns a complete recorder set or separate components, such as the recording unit, control panel, mounting frame, wire cassette, empty cassette, cassette case or documentation. The required configuration should be confirmed by product passport and system documentation.

Product Type: Onboard tape recorder
Designation: P-503BS
Alternative Designations: П-503БС
Function: Recording of speech signals and time information
Purpose: Continuous recording of voice communication and time reference signals
Application / Where Used: Aircraft, ground equipment, stationary installations
System / Installation Area: Onboard voice recording system
Compatible Aircraft / Equipment: Aircraft and ground facilities using P-503B family recorders
Family / Related Versions: P-503B, P-503BS, P-503BZ
Recording Medium: Wire, type 5.4 according to GOST 18834-83
Recording Medium Diameter: 0.05 mm
Continuous Recording Duration: Not less than 9 h
Frequency Range: 0.3 to 3.4 kHz
Linear Recording Speed: 100 ± 10 mm/s
Detonation Coefficient: Not more than 7%
Weight: Not more than 4.0 kg
Part of System / Included in Set: Recording unit UZ P-503BS; control panel PU P-503BS
Scope of Supply: Recording unit UZ P-503BS; control panel PU P-503BS; mounting frame; wire cassette SY5.960.035; empty cassette XS5.960.003; case SY6.875.047; documentation
Optional Equipment: PAM-6k underwater acoustic beacon
Underwater Beacon Location Depth: Up to 6000 m, where applicable by configuration
Condition: As applicable
Technical Documentation: Product passport P-503BS

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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.