Simulated walkie talkie Haiyun Tong H280

		Product Name	Simulated walkie talkie Haiyun Tong H280
		Product Specifications	102mm×51.5mm×28.5mm
		Product Usage	Widely used in government duty units such as public security, military, armed police, judiciary (prisons), security, urban management, etc.
detailed description

Simulated walkie talkie Haiyun Tong H280

Haiyun Tong H280 walkie talkie is a small-sized, stable in quality, easy to carry, powerful, and alarm equipped walkie talkie. It will become one of the most classic and best-selling walkie talkies in the walkie talkie industry! Best suited for female consumers and the service industry!

[Long call distance]
Large power range, capable of communication up to 5 kilometers in open areas.
[Loud and Clear Voice]
Innovative acoustic propagation structure design makes sound clearer and louder.
The machine is sturdy and durable
The body wall thickness is thickened, the structure is compact, and it can withstand a drop of 1.5 meters, ensuring durability.
[Long working hours]
The 1300mAh high-capacity lithium battery has a working time of up to 13 hours, while making the body more flexible, lightweight, and convenient to use.
High/Low Power Conversion
The power of each channel can be adjusted through the buttons (high/low power buttons) that have been set with corresponding functions. When the communication range is small, low power can be used to save battery energy.
【25 KHz /12.5 KHz 信道间隔可调】
Haiyun Tong fully considers future applicability, and users can set the channel spacing for each channel to 25KHz or 12.5KHz through the frequency writing software without having to purchase a new machine.
DTMF ANI (Automatic Call Sign Identification)
2-Tone Encoding and Decoding
This function can be set for each channel. When the walkie talkie receives a signal, there is an automatic prompt sound and indicator light to remind the user.

Press the MONI key to monitor the activity of the current channel, which is particularly advantageous when receiving weak signals.
Automatic power-saving function
When no signal is received or there is no operation, the walkie talkie will automatically enter power-saving mode, reducing power consumption and extending battery life
Low battery warning
Automatically remind users to charge when the battery is low.
[Busy channel locking]
This function prevents user devices from receiving unauthorized signals and sending signals to busy channels, keeping the channels clean and free from interference.
[Prohibited from posting after timeout]
This function is used to prevent a single walkie talkie from occupying a certain channel for too long.

The functional parameters of one walkie talkie can be copied to another walkie talkie through a duplicate cable.
Computer Programming
Users can set the frequency of reading and writing, as well as the function without disassembling the device, through this feature.
[End note elimination]
If this function is set on your walkie talkie, you will not hear the "click" sound caused by the sender's call ending or carrier disappearing.
Nine level static noise level adjustable
The squelch level determines where the squelch is turned off or on. You can choose the squelch level from 0 to 9 levels, which can be suitable for different usage environments.
Priority channel scanning
Users can set an important or frequently used channel as a priority channel. When the walkie talkie stays on a non priority channel, it still checks the activity of the priority channel regularly. Once there is activity on the priority channel, the walkie talkie automatically enters the priority channel for communication.

General specifications	Haiyun Tong H280 walkie talkie
frequency range	VHF: 136-150 MHz 150-174 MHz UHF: 350-370 MHz (Public Security) 370-390 MHz (Prison) 400-420 MHz 450-470 MHz
No of channels	16
Channel Spacing	25 /12.5 KHz
Working Voltage	7.4V
battery	1300mAh (Li-ion)
Average battery life (5-5-90 working cycles) 1300mAh 高容量锂电池	Launch 5% of the time, receive 5% of the time, and wait 90% of the time. More than 18 hours
Frequency stability	±5ppm
Working temperature range	-20℃~+50℃
antenna impedance	50Ω
Dimensions (height x width x depth) (with battery, without antenna)	102mm×51.5mm×28.5mm
Weight (with antenna and battery)	220 g
TRANSMITTER	Haiyun Tong H280 walkie talkie
output power	5W/2W（VHF） 4W/2W（UHF）
modulation scheme	16KΦF3E/8KΦF3E
Noise and harmonics	≤-21dBm
residual FM	40dB
Audio Distortion	≤5 %
Receiver	Haiyun Tong H280 walkie talkie
sensitivity	0.25/0.28 μV
adjacent channel selectivity	55/50dB
intermodulation	50dB
signal-to-noise ratio	45/40dB
rated audio-frequency output power	500mW
Rated audio distortion	≤5%

Haiyun Tong H280 walkie talkieWidely used in government duty units such as public security, military, armed police, judiciary (prisons), security, urban management, etc.
It is also widely used in:
【Construction sites, port transportation, logistics and warehousing】
In the above-mentioned places, the noise from mechanical construction and vehicle traffic is often very loud. Haiyun Tong has scientifically and effectively improved the sound hole of the loudspeaker using unique technology, and the communication sound is very loud and clear. Even in high noise environments, both parties can achieve smooth communication and audio transmission.
【Catering hotels, chain supermarkets】
There are many female employees in industries such as hotels, restaurants, and chain supermarkets. The Haiyun Tong H280 is small in size, light in weight, and equipped with high-capacity lithium batteries. The batteries are extremely durable and are the most economical professional walkie talkie, meeting the needs of female employees to use it freely. For male employees, the convenience of carrying it with them is even higher.
Haiyun Tong H280 walkie talkie complies with US military standards 810C, D, E&F FCC

Usage standard	MIL-810C		MIL-810D		MIL-810E		MIL-810F
test project	method	program	method	program	method	program	method	program
high temperature	501.1	1	501.2	1	501.3	1	501.4	1
low temperature	502.1	1	502.2	1. 2	502.3	1. 2	502.4	1. 2
thermal shock	503.1	1	503.2	1	503.3	1	503.4	1
solar radiation	505.1	1	505.2	1	505.3	1	505.4	1
humidity	507.1	2	507.2	2. 3	507.3	2. 3	507.4	3
salt fog	509.1	1	509.2	1	509.3	1	509.4	1
dust	510.1	1	510.2	1	510.3	1	510.4	1
vibration	514.2	8. 10	514.3	1	514.4	1	514.5	1

Haiyun Tong H280 walkie talkie complies with European telecommunications standard: CE