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High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability

Good quality Long Range RF Module for sales
Good quality Long Range RF Module for sales
We are very satisfied with their service and products, I bought their long range audio modules, at the begining I could not installed the modules, they taught me step by step and finally I got it! The modules work well and help me won the bid! Best Regards! Santithamkul

—— Santithamkul from Thailand

I visited many factories before I placed order for my radio modem. The reason I choose them is their professional skill and their excellent service. They do very best in every details. I like this factory and also like their lovely sales people! I will recommend more business partners to do business with them.

—— Makarov From Russia

Very excellent products and excellent service! I visisted many factories in China but none of them were meet my request! I finally chose them because many of my partners recommanded this company to me! The I/O Modules they sold were brilliant! It makes us more convenient with wireless solution!

—— Andrew from Brazil

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High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability

China High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability supplier
High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability supplier High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability supplier

Large Image :  High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability

Product Details:

Place of Origin: ShenZhen,China
Brand Name: carrylink
Model Number: KYL-668H

Payment & Shipping Terms:

Minimum Order Quantity: 2pcs
Price: negotiation
Packaging Details: cartons for outer packing and plastic film for wrapping
Delivery Time: 3-5 working days
Payment Terms: T/T, Western Union, PayPal
Supply Ability: 100pcs per day
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Detailed Product Description
Name: RF Audio Module Voltage: 12V
Distance: 20KM Power: 25W
Dimension: 108mm*128mm*28mm(Does Not Include Antenna Head) Frequency: 150MHz/230MHz/450MHz/470MHz
Interface: RS232/RS485/TTL Baud Rate: 1200/2400bps

KYL-668H BNC 25W High Power 20KM Wireless Voice And Data Transceiver UHF/VHF Wireless Transmitter



1. Transmission power

Using imported power amplifier module inside , transmission power 25W (adjustable ), Dimension 108mm × 128mm × 28mm.

2. ISM band working frequency, no need to apply carrier frequency, such as 150/230/450MHz etc, up to 256 channels.

3. High anti-interference ability and low bit error rate

Based on the MSK modulation method, an efficient communication protocol is used. When the channel error rate is 10-2, the actual bit error rate can be 10-5 ~ 10-6.

4. It can transmit voice or data signals for use as a wireless car intercom station.

5. Transparent data transmission.

Provides a transparent data interface that can adapt to any standard or non-standard user protocol. Automatically filter out noise signals and false data generated in the air. Transceiver conversion time: <50ms

6. Multi-Baud rate.

Air Baud rate: 1200bps, 2400bps , Interface baud rate 1200,2400,4800,9600,19200, can be set by users .

7. Can use the computer to set the transmission frequency, change the channel, and determine the working mode.

8. Can be as Receiver or transmitter, half-duplex communication, switching quickly.

9. Double phase-locked loop, dual VCO structure, high stability.

10. RS-232, RS-485, TTL Multiple standard interfaces are optional and can be directly connected to user equipment.

11. The interface uses standard TTL, RS-232 (or RS-485) levels and can be directly connected to a microcontroller or personal computer


●Ships, urban transport, taxi intercom systems, wireless call systems

●Industrial automation control, power dispatch, railway signal acquisition

●Water conservancy project monitoring, hydrology hydrological monitoring, meteorological data transmission, environmental protection monitoring equipment, oil production and transportation monitoring

●Forestry protection facilities, wireless beacons, river navigation, geological exploration, GPS positioning information, military training, public security alarm, remote telemetry and other automated control areas

●Picture transmission wireless intercom system

•Technical Specification

                                                         KYL-600L Parameter

High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability
•Pin Definitions

High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability
•Detailed specifications

Basic parameters
● Frequency: 150MHz/230MHz/450MHz

● Frequency tolerance: ±2.5ppm

● Channel spacing: 25KHz

● Antenna impedance: 50Ω

● Ambient temperature: -35℃~+75℃

● Modulation: MSK

● Baud rate: 1200/2400bps

Receive parameters

● Available sensitivity: ≤0.25uV

● Singal to noise ratio: ≤50dB

● Adjacent channel selectivity: ≥70dB

● Intermodulation immunity: ≥70dB

● Spurious response immunity: ≥70dB

Transmitting parameters

● Transmitting output power: 5-25W

● Modulation distortion: ≤3%

● Remaining FM: ≤-48dB

● Data frequency offset: ≤4KHz

● Adjacent channel power ratio: ≤-70dB

● Spurious frequency components: ≤-36dBm


Supply power

● Voltage: 12V (±10%)

● Waiting current: ≤60mA (Needs low current, can be customized)

● Transmitting Current: ≤6A (Transmitting output power 25W)


1. Power Supply:

Due to the big power of radio station, the general transmission power is 25W, the power supply capacity meets 12V 8A. Please select a power supply with a better ripple factor and strong anti-interference ability. If The switching power supply is used. Please pay attention to keeping the antenna away from the power supply as much as possible because the antenna may affect the normal operation of the switching power supply. When radio station transmission fails, check if the power supply voltage is tampered by the antenna, it is one of the troubleshooting methods.

2. Antenna:

The antenna should be selected according to the frequency band used by the radio station. In long-distance transmission, directional antennas or high-gain antennas should be used, which should be set as high as possible.The impedance of antennas and its cable should match the one of interface of the module (50 Omega;). If the antenna impedance does not match, the module efficiency will be very low, the power consumption will increase, and it will be easily damaged for radio station. Antenna erection should be paid attention to lightning protection and antenna directionality, and grounding should be good.

3. Cable

The feeder line is a coaxial cable, which connects between the radio and the antenna. Selecting feeder line should pay attention to the following indicators:

Impedance: 50 Omega; (There are two types of 75 Omega; and 50 Omega, please note the difference)

Attenuation: Attenuation Decibels (DB) per meter feeder line. The smaller, the better.

Wire diameter: The thicker the feeder line diameter and the thicker the shield, the smaller the attenuation of the feeder.

Feeder line connector: The two ends of the feeder line must match the ones of the antenna and radio station. The connector's impedance is also 50 Omega; and it must be securely connected. When installing the feeder line,be careful not too tightly. Take a loop around the feeder line when enter the room,which prevents rainwater from entering the radio station. In Dorayan areas or when the antenna is installed at a high level, an arrester must be installed.

4. Cooling

When the radio station is transmitting for a long time, heat generated must be emitted in a timely manner. If can not, it may easily cause the wireless transmission to work abnormally.



1. Standard accessories
►1pc KYL-600H module.
►1pc Power supply cable.
►1pc small magnetic antenna
2. Selectable accessories
►RS-232 interface programming cable. (for users to set parameters through RS232 interface of the computer)
►USB interface programming cable. (for users to set parameters through USB interface of the computer)
►Power supply
►Selectable antenna.(Users can choose antenna if need)
Pic.: Selectable accessories
High Power 20KM Wireless RF Audio Module UHF/VHF High Anti Interference Ability


Contact Details
Shenzhen KYL Communication Equipment Co.,Ltd

Contact Person: sales

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