How do I switch it to Amateur frequencies?

This is a GMRS only radio. It will not change to the amateur frequencies. There are other radios from QYT as well as B-tech that will allow access to amateur bands as well as GMRS frequencies. However this radios at not FCC approved for use on FRS and GMRS frequencies

speaker output- is the audio output a normal jack or something special? a 1/4" jack?

Believe or is a normal audio out Jack

Which Antenna does it use?

A Dual Band Antenna Patriot or Cushcraft. Some of the GMRS channels have been blocked in this model.

what would i buy to plug this in to an AC adapter at home instead of vehicle?

Will need to buy a power converter. 12 volt DC to 110/120 volt aC

Kt 8900 | Desertcart Vietnam

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5070477₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📻 Stay connected, stay ahead — the KT-8900 is your communication game-changer!

PRIVACY ON DEMAND - 50 CTCSS & 104 DCS codes keep your conversations secure and interference-free—no unwanted eavesdropping.
DUAL BAND VERSATILITY - Seamlessly switch between VHF (136-174MHz) and UHF (400-480MHz) for ultimate frequency flexibility.
PRO GRADE PROGRAMMABILITY - 200 channels fully programmable for repeater use, with integrated control mic and DTMF keypad for instant command.
UNMATCHED LONG RANGE REACH - Up to 12 miles of crystal-clear communication, perfect for off-roaders and pros who never lose touch.
POWER MODES FOR EVERY MISSION - Adjust output power (25W/20W/10W/5W) to optimize battery life or maximize range as needed.

The QYT KT-8900 is a professional-grade 25W GMRS mobile and base station radio featuring dual-band VHF/UHF operation, 200 programmable channels, and 154 privacy codes. Designed for long-range communication up to 12 miles, it offers adjustable power settings and advanced functions like DTMF, remote stun, and FM radio. Lightweight and versatile, it’s ideal for managers, outdoor enthusiasts, and professionals demanding reliable, secure connectivity.

Specifications

ASIN	B09G962T3J
Additional Features	Lightweight / Dual Band / Noise Reduction / CARRIER / CTCSS / DCS / 5Tone / 2Tone / DTMF /ANI
Best Sellers Rank	#466 in Portable FRS Two-Way Radios
Brand	QYT
Built-In Media	1x 2.8 ft DC Cable with Cigarette Plug Connector, 1x Microphone with DTMF Keypad, 1x Mobile Transceiver, 1x Mounting Bracket(Fuse and Screws included), Cable
Color	Black
Compatible Devices	Devices with VHF and UHF frequency range and compatible output power
Connectivity Protocol	DTMF
Customer Reviews	4.1 4.1 out of 5 stars (56)
Frequency Range	462.55 - 462.725MHz, 462.5625 - 462.7125MHz, 467.55 - 467.725MHz
Impedance	50 ohm
Item Dimensions D x W x H	4.65"D x 3.86"W x 1.38"H
Item Highlight	Integrated Control Mic,Lightweight,50 CTCSS & 104 DCS Privacy Codes,200 Channels – All Programmable for Repeater Use
Item Type Name	Two Way Radios
Item Weight	14.4 ounces
Manufacturer	QYT
Mfr Part Number	KT-8900-BLACK
Model Number	KT-8900-BLACK
Number of Channels	200
Number of Packs	1
Talking Range Maximum	12 mile
Temperature Range	-5℉ to 140℉ °F
Tuner Type	UHF
UPC	717977012829
Unit Count	1 Count
Voltage	13.8 volts_of_direct_current
Warranty Description	3 months warranty
Water Resistance Level	Not Water Resistant

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5070477₫

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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