AAHHi Two-Way Radios Factory

Professional Two-Way Radio Manufacturer

Home | About Us | Products | Support | Contact Us

Home > Products > Analog Radios > A21

A21 Mini Ear-hook Walkie Talkie w/Removable Battery Pack

The A21 is lightweight, compact, and easy to use with removable battery pack and is paired with the most popular Type-C charging port making this an easy solution to your productivity problems.

— Highlights —

	Mini Size			Voice Prompt
	Only 29g Mini Pocket Size with lightweight design and easy to use are good for your communication privacy with clear voice			The radio actually talks to you in a human-like voice. You will hear the prompt spoken in plain relative language.
	Intelligent Power Saver			Low Battery Indicator
	The radio will switch to automatically after being left unused for a certain amount of time, lessens the drain on your battery and makes it last longer.			This circuit alerts the user when the battery needs changing or charging.
	Low Battery Alert			Power-on Tone
	When the battery voltage is low, it will prompt "Please change the battery" and the red light will flash at the same time. Please charge right now.			A sound prompt when you turn on the power, which is a very practical function in dark places or for people with visual impairments.
	Monitor			Channel Step
	This feature allows you to check if a channel is clear before you transmit.			Channel refers to the frequency value occupied when transmitting and receiving.
	Scan			Hands-free VOX
	The channel scan feature enables a two way radio to continuously scan each channel for activity.			This hands-free feature allows you to get on with other manual tasks while you stay in touch with other users.
	Wide/Narrow Band			Busy Channel Lockout
	Narrowband takes up less frequency space and lowers the chance for interference, wideband channels can carry more infos but require more power.			This feature keeps communication lines open by preventing radios from listening or transmitting through conversations outside their talkgroup.
	Time-out Timer			Scrambler
	This feature will stop the transmission of the two-way radio if the radio is transmitting for a long duration.			A technology is used to scramble communications to prevent other radio users in the vicinity from listening to your conversations.
	CTCSS/DCS			Frequency Hopping
	CTCSS uses continuous tones below 300 Hz whereas DCS uses digital data and all encoded words can be used on the same channel without interference.			Frequency hopping is a method of transmitting radio signals by rapidly switching the carrier between different frequency channels.
	Type-C Charging Interface
	The Type-C charging interface is so simple usage by specifying cables having identical plugs on both ends, which can be inserted without concern about orientation.

— Specifications —

General
Frequency Range	400-470 MHz
Channel Capacity	16
Zone Capacity	/
Channel Spacing	12.5/25kHz
Frequency Stability	±2.5ppm
Antenna Impedance	50Ω
Operating Voltage	DC 3.7V
Battery Capacity	350mAh
Battery Life(5-5-90 Duty Cycle,High TX Power)	4 hours
Dimensions (ex ant, H×W×D)	69.8x18.7x18.2 mm
Weight	About 29g
Transmitter
Output Power	≤0.5W
Analog FM Modulation	ФF3E
Digital 4FSK Modulation	/
Conducted/Radiated Emission	< -36dBm [ < 1 GHz]; < -30dBm [ > 1 GHz ]
Modulation Limiting	±5kHz@25kHz
FM Hum & Noise	<-45 dB@25kHz
Adjacent Channel Power	≤-65 dB
Audio Response	＋3dB～－3dB
Modulation Distortion	≤5%
Digital Vocoder Type	/
Digital Protocol	/
Carrier Frequency Tolerance	±500Hz
Receiver
Sensitivity(Analog)	0.16μV
Selectivity(Digital)	/
Adjacent Channel Selectivity	≤70dB
Inter Modulation Response Rejection	50dB
CSQ Hum & Noise	<-40 dB
Rated Audio Power Output	≤300mW
Rated Audio Distortion	≤5%
Conducted Spurious Emission	< -58 dBm [ < 1 GHz ] < -47 dBm [ > 1 GHz ]
Co-channel Rejection	≥-8dB
Block	≥84dB
Received Signal To Noise Ratio	<-40 dB
NOTE: 1.All specifications are subject to change without notice due to continuous development.