The Standard Horizon MH-57A4B is a compact mini speaker microphone for compatible Standard Horizon handheld VHF radios. It lets the radio stay on a belt or close by while speaking and listening through the external microphone.
The MH-57A4B is useful on board, in port, during service work and in other marine communication situations where quick access is important. The current replacement type is also listed by suppliers as SSM-17H. Always check the exact radio model and connector before ordering.
Key features
- Mini speaker microphone for Standard Horizon handheld VHF radios
- Compact and lightweight design
- For speaking and listening through an external microphone
- Useful as a shoulder microphone or onboard accessory
- Current replacement type is also listed as SSM-17H
- Earphone jack according to supplier description
- Suitable for several HX-series handheld radios
- Not intended as a universal microphone for all VHF radios
- Note: listed by a supplier as not waterproof
- Always check compatibility with the exact radio model
Product specifications
- Brand: Standard Horizon
- Model / type: MH-57A4B
- Replacement / alternative type: SSM-17H
- Product type: mini speaker microphone / external microphone
- Colour: black
- Material: plastic according to supplier
- Function: speaking and listening through external speaker microphone
- Connector: model-specific Standard Horizon connector
- Compatibility according to suppliers: HX870E, HX851E, HX760E, HX751E, HX400E, HX370E and HX290E
- Also listed by some suppliers: HX40E
- Waterproof: no, according to supplier listing
- Application: handheld VHF, marine communication, harbour, boat, service and field use
- Not included: VHF radio, headset or other accessories
- Check advice: always verify the exact VHF model and connector before ordering
Yaesu SSM-17H
