Product Details

Product Description

SA828 - 3.5 - 5km All-in-One UHF / VHF vhf transceiver module high-integrated walkie talkie module

SA828 is an all-in-one professional walkie-talkie module in small size. It is very easy to use with powerful function. This module has full function of a professional walkie-talkie and can talk with any analog walkie-talkie in the market. With the small size, it can be easily embedded into instrument, portable and handheld device. SA828 works well in the hot/cold environment with the KDS 1PPM TCXO. The features of excellent antenna match network, good RF amplifier, high RF sensitivity allow its communication easily to achieve over 3Km in open area.
Rotary switch for channel selection, EEPROM, Audio Amplifier, RF Amplifier, PTT key, Antenna socket are all included in such a small size module. Besides, all parameters (CTCSS, CDCSS, SQ, Predefined channels etc) can be easily modified either by PC software or command using UART interface. With the embedded audio volume turning circuit, user can only solder a variable resistor on Pin16, Pin17 to adjust the volume steplessly.
There are two frequency bands of SA828: SA828-U and SA828-V. The only difference is the frequency range. The others are same, including module size, interface, software protocol, etc. The two modules’ frequency ranges are: SA828-U: U band, 400 -- 480MHz , SA828-V: V band, 134 -- 174MHz

Specification

Parameter	Test condition	Min.		Typ		Max.	Unit
Operating voltage range	--	3.3		4.2		5.5	V
Operating temperature range	--	-30		25		70	℃
Power consumption
Sleeping Current	--	--		≤3			uA
RX current	--	--		60			mA
TX current (high output power)	--	--		650		750	mA
TX current (low output power)	--	--		450		550	mA
TX frequency parameter
Operating frequency range	SA828-U	400		--		480	MHz
	SA828-V	134		--		174	MHz
TX current (high output power)	@VCC=4.0V	28		29.5		31	dBm
TX current (low output power)		25		26.5		27	dBm
Audio distortion	@1.5Khz/2.5KHZ Frequency deviation	--		2		5	%
Adjacent Channel Ratio	@12.5K offset	--		-60dBc			dBm
RX frequency parameter
RX sensitivity	13 dBm output audio SNR	--	-124		--	dBm
RX SNR	@1.5 KHZ Frequency deviation	45	50		--	dB
Audio output power	--	--	2		--	W
Audio output impedance	--	--	8		--	OHm

Features
Frequency range: 400~480MHz /134~174MHz
Solely TX and RX frequency
12.5/25KHz bandwidth selection
1W Output Power
3~5Km distance in open aera
High Sensitivity: -124dBm
High Integrated with ultra small size
166 CDCSS, 38 CTCSS
8 SQ
High / low output power selection (500mW-1W)
Embedded EEPROM, data saved even power off
1ppm TCXO

Application:
Small size walkie-talkie
Pocket / handheld device
Security system
Instrument
Outdoor sport product
Audio tracking and control system

Communication protocol
The parameters of SA828 can be modified with standard UART interface. The interface voltage is TTL 3.3V. User can contact your sales engineer for detailed communication protocol.

Packaging & Shipping