can this be used to connect an external speaker while in the car?

Yes, it separates the single speakermike jack of compatible models, into separate speaker and mic jacks.

Will it work on standard horizon hx400is?

It should. It appears the adapter plug and the plug on the HX400is hand microphone are the same.

Is this compatible to connect my yaesu FT-270R to kenwood/baofeng 2 pin connectors on speaker/mics and headsets?

Yes, some 2-pin "Icom" style speakermics "may" work thru this adapter, but at that point I would suggest getting the correct Speakermic - either the MH-57A4b, the CMP460 , or the MH-73A4B, no need for adapter.

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Yaesu Vertex/Standard Horizon CT-91 Speaker Microphone Adapter

Product ID: 274726082

Details

Brand
Yaesu Vertex
Connector type
Auxiliary
Cable type
AUX
Compatible devices
Radio
Special features
Waterproof

🎤Separate mic & speaker

📻Compatible with multiple models

🔌Single jack adapter

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1317530₫

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔊 Elevate Your Audio Game!

EFFORTLESS SETUP - Plug-and-play design means you can get started in seconds—no technical expertise required.
PROFESSIONAL QUALITY - Engineered for durability and reliability, perfect for demanding environments.
STAY CONNECTED ANYWHERE - Ideal for outdoor adventures or professional use, ensuring you never miss a beat.
UNIVERSAL COMPATIBILITY - Fits a wide range of Yaesu and Standard Horizon radios, ensuring seamless integration.
TRANSFORM YOUR COMMUNICATION - Easily adapts a single Speakermic jack into separate speaker and mic jacks for enhanced clarity.

The Yaesu Vertex/Standard Horizon CT-91 Speaker Microphone Adapter is a versatile accessory that transforms a single Speakermic jack into separate speaker and mic jacks. It is compatible with a variety of Yaesu and Standard Horizon radios, making it an essential tool for clear communication in both professional and recreational settings.

Specifications

ASIN	B0049GXLDY
Brand	Yaesu Vertex
Brand Name	Yaesu Vertex
Cable Type	AUX
Cable type	AUX
Color	Black
Compatible Devices	Radio
Compatible devices	Radio
Connector Gender	Male-to-Female
Connector Type	Auxiliary
Connector type	Auxiliary
Included Components	Microphone
Indoor Outdoor Usage	Outdoor
Item Shape	Round
Manufacturer	Yaesu Vertex Standard
Model	CT-91
Model Name	Horizon CT 91
Number of Pins	6
Other Special Features of the Product	Waterproof
Recommended Uses For Product	Radio
Recommended uses for product	Radio
Special features	Waterproof
Specification Met	UL
UPC	788026085279
Unit Count	1.0 Count

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1317530₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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