LS-V25000 radio modem is a professional high performance data transmission radio combining with newest RF chip and wireless communication technology. This radio supports multiple frequency band, VHF or UHF. With 25W power output, it has long transmission distance which reaches about more than 20km in open air.
I: Features:
1. High power output: 10W or 25W
2. Long transmission distance: up to 20km
3. VHF band 150MHz band or 230MHz band or 450MHz
4. Data transmission, voice transmission both ok
5. Double PLL, double VCO, High reliability
6. VOX function
II. Data sheet
A,General Index
● frequency:VHF and UHF frequency band (150MHz, 230MHz), can store about 400 channels
● frequency tolerance:±2.5ppm
● Channel spacing:25 KHz
● antenna impedance:50Ω
● environment temperature:-35 ℃~+75 ℃
● modulate mode:MSK
● air baud rate:1200bps/2400bps
B,Receiver Index
● sensitivity: ≤0.25uV
● ignal Noise Ratio(SNR): ≤-50dB
● Adjacent Channel Selectivity: ≥70dB
● Inter modulation interference: ≥70dB
● Spurious respouse immunity: ≥70dB
C,Transmitter Index
● Transmit Power: 25W
● modulate distortion: ≤3%
● residual frequency modulation: ≤-48dB
● frequency deviation: ≤5KHz
● ortho-channel power ratio: ≤-70dB
● stray power: ≤5uW
● RF distance: 20km(25W RF power in the open air)
D,Power supply
● DC: 12 V (±10%)
● waiting current: ≤ 1 6 0 m A
● transmitting current: ≤ 6 A ( transmit power 25W )
E,Dimension:
128*108*28mm
III. Pin Definition
| Connector | Pin No. | Pin name | Description | Remarks |
| Power connection | １ | VCC | DC:12V | Please use power DC 12V, more than 8A |
| | ２ | GND | Ground of power supply | |
| Signal connection | １ | TTL(TxD) | TxD of TTL | |
| | ２ | RxD(Ａ) | RxD of RS-232 RS-485 A | RS-232,RS-485,TTL, only one valid |
| | ３ | TXD(Ｂ) | TxD of RS-232 RS-485 B | RS-232,RS-485,TTL, only one valid |
| | ４ | TTL(RxD) | RxD of TTL | |
| | ５ | GND | Signal ground | |
| | ６ | PTT | Audio transmitting enable | Low level is for transmitting |
| | ７ | MIC | Audio signal input | Microphone input,modulation sensitivity 10mV |
| | ８ | SP | Audio signal output | Audio amplifier output 8ohm 0.5W |
| | ９ | SQ | Receiving signal checking | Receiving carrier signal, high level |
Application of LS-V25000
Salvage, Marine control
public traffic
industrial automatic control
electric power schedule
water conservancy monitor
signal collection and transmission of railway system
oil extraction and transportation control
measure of oil or water wells
hydrological monitoring
weather station monitoring
forest protection
intelligent building
geological reconnoiter
mobile location
military training
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25W Wireless Audio Radio 20km VHF 150MHz/230MHz UHF 433MHz Vox radio Images
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