Description
Waterproof Speaker Microphone
Heavy-duty IP67 submersible speaker mic for A25 series aviation radios.
The Icom HM231 (also designated as HM-231) is a genuine OEM waterproof speaker microphone designed for A25 series handheld aviation radios. Engineered to deliver clear transmit and receive audio in challenging flight line and ground support environments, the Icom HM231 features a compact 2-pin slim L-type connector that seats securely into the radio accessory jack.
Built with an IP67 dust-tight and waterproof rating, the Icom HM231 withstands harsh weather, driving rain, and accidental water exposure. An integrated 8-position rotary belt clip allows pilots and airfield personnel to attach the microphone securely to lapels, flight jackets, or harnesses for convenient hands-free monitoring.
Key Features & Benefits
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IP67 Waterproof Rating: Sealed housing protects internal audio components against dust ingress and water submersion up to 1 meter depth for 30 minutes.
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Icom HM231 Rotary Clip: Heavy-duty 8-position rotating clothing clip attaches securely to coats, vests, or flight gear at optimal listening angles.
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Compact Coiled Cable: Flexible 500 mm (19.7 Inches) coiled cord extends easily while preventing snag hazards on cockpit controls.
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Slim L-Type Connector: Custom 2-pin slim right-angle connector ensures a tight, low-profile seal against the radio housing.
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Lightweight Aviation Design: Weighing just 115 grams, the microphone provides all-day carrying comfort without straining lapels or collars.
Specifications
| Attribute |
Details |
| Brand |
Icom |
| Model/SKU |
HM231 (HM-231) |
| Product Type |
Speaker Microphone |
| Connector Type |
2-Pin Slim L-Type |
| Ingress Protection |
IP67 (Dust-Tight & Submersible) |
| Cable Length |
500 mm / 19.7 Inches (Curled) |
| Weight |
115 g (4.06 oz) |
| Mounting Clip |
8-Position Rotary Clip |
Compatibility
Recommended Accessories
Compatible Radios
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Icom A25N VHF Airband Portable Radio – Advanced navigation and communication airband handheld radio featuring Bluetooth and GPS.
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Icom A25C VHF Airband Portable Radio – Com-only VHF aviation handheld radio for flight crew and ground support operations.
Batteries & Chargers
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Icom BP288 Li-Ion Battery Pack – High-capacity 2200mAh waterproof battery pack for A25 series portable radios.
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Icom BC224 Desktop Charger – Rapid rate drop-in desktop charging base for A25 batteries.
More Resources
- 5 Benefits of Professional Two-Way Radios Over Mobile Phones
- Real-World Two-Way Radio Range & Propagation Explained
- 15 Myth-Busting Facts About Two-Way Radio Range
- Browse All Icom Aviation Radio Accessories & Parts
Frequently Asked Questions
What is the primary function of the Icom HM231 speaker microphone?
The Icom HM231 is a remote speaker microphone that plugs into A25 series handheld radios, allowing users to transmit and hear audio without removing the radio from their belt or flight bag.
Is the Icom HM231 speaker microphone waterproof?
Yes, the Icom HM231 features an official IP67 ingress protection rating, making it completely dust-tight and waterproof when submerged in up to 1 meter of water for 30 minutes.
Which radio models are compatible with the Icom HM231?
The Icom HM231 is designed specifically for Icom A25 series VHF airband portable radios, including the A25, A25N, and A25C.
What type of connector does the Icom HM231 use?
The Icom HM231 utilizes a specialized 2-pin slim L-type connector engineered to form a tight, weatherproof seal against the radio accessory port.
How long is the cable on the Icom HM231 speaker microphone?
The Icom HM231 features a durable coiled cable with a base curled length of 500 mm (19.7 Inches), allowing comfortable movement without catching on flight controls.
Does the Icom HM231 clip rotate?
Yes, the Icom HM231 comes equipped with an integrated 8-position rotary clothing clip that swivels 360 degrees for secure attachment to lapels, vests, or harnesses.
Warranty
1-year manufacturer’s warranty.
