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 |
|
VCC |
DC:12V |
Please use power
DC 12V, more than 8A
|
|
|
GND |
Ground of power supply |
|
Signal connection |
|
TTL(TxD) |
TxD of TTL |
|
|
|
RxD() |
RxD of RS-232
RS-485 A
|
RS-232,RS-485,TTL, only one valid |
|
|
TXD() |
TxD of RS-232
RS-485 B
|
RS-232,RS-485,TTL, only one valid |
|
|
TTL(RxD) |
RxD of TTL |
|
|
|
GND |
Signal ground |
|
|
|
PTT |
Audio transmitting enable |
Low level is for transmitting |
|
|
MIC |
Audio signal input |
Microphone input,modulation sensitivity 10mV |
|
|
SP |
Audio signal output |
Audio amplifier output 8ohm 0.5W |
|
|
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