Does the bc20 need an external power or does it plug into an ac port

The BC20 is not powered, if you need it to be louder, go with the BC23A, which connects to 12VDC. The sound from it is great.

How is this speaker powered? I have a uniden R3 radar, and i want a speaker to plug into the aux port so i can have my radio up and still hear.

The speaker is powered from the EXT SP Port, External Speaker. That's it. I purchased a Uniden/Bearcat speaker with my scanner. Plenty Loud Enough For Me! Works off the Volume Control Of The Scanner. If you have a EXT SP port, Audio Companies know how to broadcast it to your entire neighborhood, if you got the $$$ and desire.

Does this come with the wires to hook it up to Uniden 880 bearcat radio

It comes with a single non detachable cord that plugs into the back hole marked "ext. Speaker"

I would like to mount a speaker at the driver's side corner of the windshield on the curved dash surface. Is this a good choice?

No, there would be to much vibration for it. I wired it and mounted it at the bottom of the dash of a 389 Peterbuilt, so it would be stable.

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(BC20) Bearcat 20-Watt External Communications Speaker. Durable Rugged Design, Perfect for Amplifying Uniden Scanners, CB Radios, and Other Communications Receivers ,Black

Product ID: 3795485

Details

Audio Output Mode
Mono
Brand
Uniden
Connectivity Technology
Wired
Frequency Response
5000 Hz
Speaker Maximum Output Power
20 Watts

🎧Noise Blanker for clear audio

🔊20 Watts max output

🔌10 ft wired with 3.5mm jack

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Description

🔊 Amplify your signal, not the noise—Uniden BC20 keeps you connected in style.

POWERFUL 20 WATT OUTPUT - Experience crystal-clear sound that cuts through any environment.
UNIVERSAL COMPATIBILITY - Seamlessly amplifies audio from CB radios, scanners, and other communication devices.
FLEXIBLE MOUNTING OPTIONS - Mount it securely or place it on any surface with included hardware for ultimate convenience.
RUGGED SHOCKPROOF DESIGN - Built to withstand real-world punishment—durability meets reliability.
ADVANCED NOISE BLANKER TECH - Say goodbye to static and electrical interference during critical communications.

The Uniden BC20 Bearcat is a rugged, 20-watt external speaker designed to enhance audio clarity for CB radios, scanners, and communication receivers. Featuring a noise blanker to reduce interference, a 10-foot wired connection with a 3.5mm jack, and versatile mounting options, it delivers powerful, clear sound in demanding environments. Compact yet durable, it’s the perfect audio upgrade for professionals who demand reliability and crystal-clear communication.

Specifications

ASIN	B009TNABQ2
Additional Features	Shockproof, Clear Audio
Antenna Location	electrical
Audio Driver Type	Dynamic Driver
Audio Output Mode	Mono
Best Sellers Rank	#167 in Portable FRS Two-Way Radios
Brand	Uniden
Built-In Media	product, manual
Color	Black
Compatible Devices	CB Radio, Radio Scanner, Communications Receiver
Connectivity Protocol	3.5 mm wired connection
Connectivity Technology	Wired
Control Method	Touch
Controller Type	Touchpad
Customer Package Type	Standard Packaging
Customer Reviews	4.5 4.5 out of 5 stars (1,124)
Enclosure Material	Plastic
Frequency Response	5000 Hz
Global Trade Identification Number	00050633550601
Impedance	4 Ohms
Is Waterproof	FALSE
Item Dimensions D x W x H	2.5"D x 4.7"W x 4.7"H
Item Type Name	CB speaker
Item Weight	1.4 Pounds
MP3 player	No
Manufacturer	Uniden
Model Name	BC20
Model Number	BC20
Mounting Type	Flush Mount, Tabletop Mount
Number Of Circuits	1
Number of Items	1
Speaker Maximum Output Power	20 Watts
Speaker Size	4 Inches
Speaker Type	Satellite
Specific Uses For Product	Amplifying audio from CB radios and radio scanners, use in noisy environments, or monitoring radio communications
Subwoofer Connectivity Technology	Wired
Tweeter Diameter	4 Inches
UPC	132017733654 168141325373 031112153674 012302119298 803983102521 782386054050 115971122191 031111475326 521375641198 163120828715 073581007362 050633550601 731215348235 021113059112 151903547830 182682395459
Unit Count	1.0 Count
Warranty Description	1 year
Warranty Type	Limited
Woofer Diameter	4 Inches

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$99.76

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered 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 British Virgin Islands.

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TrustScore 4.5 | 7,300+ reviews

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