Aviation Flight Helmet Adapter for DPH, GPH

$285.00
SKU
AVDPHFH9R
  • Adapt a Relm BK DPH and GPH to flight helmet
  • Compatible with NATO-UK Wiring standard
  • Built to NIFC Air Com Standards

What is the AVDPHFH9R Adapter?

The AVDPHFH9R Flight Helmet Adapter allows DPH and GPH Radio users to connect to the nexus plug of your helicopter flight helmet.  Easy and cost effective communications with the use of the adapter to stay in contact with the aviation equipment on wildland fire indidents. The avaition adapter uses the PTT button on the nexus plug to key up your handheld radio and communicate through the microphone on your flight helmet.

Works with the following Bendix King Radios: 

  • DPH5102X, DPHX5102X, DPH5102X-CMD
  • GPH5102X, GPH5102XP, GPH5102XP-CMD

Is your Helmet Compatible?

The flight helmet adapters are compatible with many brands of flight helmets which utilize a Nexus U-174 connector with the NATO/UK (AKA Peltor) wiring standard. There are 2 common wiring standards for this connector. Our adapters use the Peltor wiring standard for this connector which is also compatible with NATO / UK (most civilian helicopter flight helmets in the US use this standard). However there are some flight helments that use the NATO / US wiring standard for the U174 Conntector which are not compatible with these flight helmet adapters. There are some slight differences in the NATO / US and NATO / UK connectors (pictured below) that will help you determine which connector your helmet has.

This is not compatible for this adapter

Aviation Wiring Diagram NATO US


This is a compatible Connector.


This U174 is a compatible connector plug, but not when wired to US military standards; however, many companies wire this connector to the Peltor standard. Some companies will even wire this connector to either standard based on customer preference.  Contact helmet manufacturer to confirm connector wiring standard.

While we can help you determine which connector you have, it is impossible for us to know exactly which wiring standard was used. While the vast majority of US civilian flight helmets are compatible, if you are still unsure, often you can find out from the manufacturer of your helmet which wiring standard was used for your order. 

Frequently Asked Questions:

  1. What connector does this headset adapter use?
    Nexus PTT (M9177/5-1 U-94A/U)

  2. What wiring standard was the Nexus plug wired to?
    Our adapters are wired to Peltor or "Helicopter" standard.

* Also known as: ACS 988-3 Air Com NFES 5328 NIFC.

More Information
Product Name Aviation Flight Helmet Adapter for DPH, GPH
SKU AVDPHFH9R
Radio Type Portable Handheld
Radio Model DPHX5102X, DPH5102X, DPH5102X-CMD, GPH5102XP, GPH5102X, GPH5102A, GPH5102X-CMD
Radio Brand BK Technologies
Item Type Flight Helmet Adapters
Grade Standard
Adapter Type Flight Helmet
Accessory Type Adapter
Manufacturer 49er Communications
Accessory Connection Type Plug In
Water Rating IP50 & Below No Water
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