RPM-70 2.024.065

RPM-70 receiver in the Kurs MP-70 landing system

The RPM-70 is an airborne marker beacon receiver used as part of the Kurs MP-70 navigation and landing system. It receives signals from ground-based marker beacons installed along the approach path and gives the crew an indication when the aircraft passes over these points. The receiver is not a standalone landing system. It works as one component in the onboard radio navigation suite, helping the crew confirm position during approach and landing by using marker beacon signals.

Marker beacon reception through RPM-70

During an instrument approach, marker beacons transmit on a fixed frequency and use different modulation tones for specific approach points. The RPM-70 detects these signals and sends the corresponding information to the aircraft indication and audio circuits. The crew receives both headset audio and cockpit visual indication. This is useful because the marker signal gives a clear confirmation that the aircraft is passing a defined point on the approach path, such as outer, middle or inner marker position, depending on the installed airport system.

RPM-70 in approach and landing navigation

The RPM-70 supports approach operations by adding marker beacon information to the navigation and landing picture available to the crew. It does not calculate glide path or localizer deviation, and it does not control the aircraft. Its role is more specific: to identify passage over marker beacon zones and provide a signal that can be recognized quickly in the cockpit. In older and mixed navigation environments, this remains important where marker beacon equipment is part of the landing procedure or aircraft system architecture.

Integration of RPM-70 with Kurs MP-70 equipment

In the Kurs MP-70 system, the RPM-70 works together with onboard indication circuits, mode selection equipment and other radio navigation units. It may interact with the common mode selector of the Kurs MP-70 complex, depending on aircraft wiring and configuration. During troubleshooting, marker beacon indication problems should not be assigned to the receiver alone without checking antenna circuits, wiring, annunciators, headset audio paths and mode selector connections. The receiver is one part of the full signal chain.

Aircraft application of the RPM-70 receiver

The RPM-70 is used on aircraft and helicopters equipped with the Kurs MP-70 system. It can be found on platforms such as Il-76, Il-86 and Mi-26T, as well as other aircraft fitted with the corresponding navigation and landing equipment. The exact installation depends on the aircraft type, avionics configuration and documentation set. Before replacement, the receiver should be checked against the aircraft parts catalog, Kurs MP-70 documentation and the actual onboard wiring arrangement.

Identification and alternate designations of RPM-70

In supply requests and technical documentation, the receiver may appear under several designations: RPM-70, РПМ-70 or IIC-RPM-70. These names refer to the same general receiver type, but the exact unit configuration and documentation should still be checked before supply. The Cyrillic designation РПМ-70 is commonly used in Russian-language aircraft documentation. For procurement, it is best to specify the system application, aircraft type, required condition and availability of passport or operational documents.

Supply and documentation for RPM-70

RPM-70 is classified as airborne radio navigation equipment and may be supplied new, from storage, repaired, overhauled or serviceable depending on availability. For aircraft use, the product passport, operational documentation, service history and compatibility with the installed Kurs MP-70 system are important. If the unit is purchased separately, it should be clarified whether the requirement is only for the receiver or for a larger Kurs MP-70 set including selectors, indication elements and related wiring components.

Product Type: Marker beacon receiver / airborne radio navigation equipment
Designation: RPM-70
Cyrillic Designation: РПМ-70
Alternative Designations: RPM-70, РПМ-70, IIC-RPM-70
Function: Reception of marker beacon signals with audio and visual indication
Application / Where Used: Aircraft navigation and landing systems
System / Installation Area: Kurs MP-70 onboard navigation and landing system
Part of System / Included in Set: Kurs MP-70 system
Compatible Aircraft / Equipment: Aircraft and helicopters equipped with Kurs MP-70, including Il-76, Il-86 and Mi-26T depending on configuration
Operating Frequency: 75 MHz
Modulation Frequency, Outer Marker: 3000 Hz
Modulation Frequency, Middle Marker: 1300 Hz
Modulation Frequency, Inner Marker: 400 Hz
Indication: Audio signal in headset and visual indication on cockpit annunciators
System Interaction: Operates with the common mode selector of the Kurs MP-70 system depending on aircraft configuration
Supported Navigation Function: Indication of aircraft passage over marker beacon points during approach
Condition: As applicable
Technical Documentation: Product passport and operational documentation

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Warranty
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