SA818 High frequency uhf 1W high power rf walkie talkie module

Product Overview

Description

 

 

 

Features: 

• Frequency range: SA818-U: 400 ~ 480 MHz (UHF) / SA818-V : 134~174MHZ (VHF)
• Tx and Rx frequency, Tx and Rx CTCSS,CDCSS can be set alone.
• Band width: 12.5/25KHz
• Output power up to 1 w
• Transmission distance up to 3.5 to 5 km in Open area
• sensitivity: -124 dBm
• small size
• Built-in EEPROM, data kept unchanged even power off
• 38 CTCSS
• 166 CDCSS
• 8 level squelch
• 8 adjustable volume
• high/ low power is optional (500 mw-1w)
• wide range of working voltage 3.3V to 5.5V
• 1 ppm KDS TCXO crystal

 

 

Applications:  

• small walkie talkie
• Invisible intercom system
• Sport products
• building community security system
• audio surveillance system

 

Specifications:

 

Parameter	Test condition	Min	Typ	Max	Unit
Power supply		3.3	4.2	5.5	V
Working Temperature range		-30	25	85	℃
Current consumption
Sleep current	@ PD  = 0V		≤1		uA
RX current			60		mA
TX current(High power)			650	750	mA
TX current(low power)			450	550	mA
Transmitting RF parameters
Frequency range	UHF	400		480	MHz
Frequency range	VHF	134		174	MHz
Out power(High power)	@ VCC=4.0V	28	29.5	31	dBm
Out power(low power)		25	26.5	27	dBm
Modulation frequency	@ 1.5Khz/2.5KHz frequency deviation		10		mV
Audio modulation distortion	@ 1.5Khz/2.5KHz frequency deviation		2	5	%
SignaltoNoiseRatio	@ 1.5Khz/2.5KHz frequency deviation	38	40	45	dB
adjacent-channel power	@ 12.5K offset		-60dBc		dBm
CTCSS Modulation frequency		0.35	0.5	0.75	KHz
Receiving RF parameters
Receiving sensitivity			-124		dBm
Receiving SNR	@ 1.5KHz frequency deviation	45	50		dB
Audio output amplitude			700		mV
Audio Output impedance			200		OHm

  

 

Internal diagram:

 

 

 

Pin out:

 

 

Machine Dimension: