User's Manual

System Specications - Transmitter
Frequency Range VHF 135 ~ 175MHz
Output Power 10dBm ~ 37dBm (10mW – 5W)
Modulation Type FM,2FSK
FSK,FM Deviation +/- 2.5kHz, 4.5kHz, 5kHz
Frequency Tolerance VHF: < 5ppm ,UHF: < 3ppm
Frequency Stability VHF: < 5ppm ,UHF: < 3ppm
Harmonic < -57dBc or -36dBm
Spurious < -60dBc
System Specications - Receiver
LO Frequency Temperature Stability < 3ppm
Receiver Sensitive < -118dBm @12dB SINAD
Image Rejection >60dB
Spurious Rejection >60dB
Adjacent Channel Rejection 12.5kHz Channel Spacing: >52dB ,25kHz Channel Spacing: >60dB
Intermodulation Response Rejection +/-25kHZ/50kHZ : 60dB, +/-50kHZ/100kHZ : 60dB
2nd IF Frequency 455kHz
IF Bandwidth 15kHz
Power Voltage 12 V
Current 2.5 A
Dimension 11 x 9 x 3 cm
I/O port function description - Model: TX-200EN
Pin No Pin Name I/O Type Signal Type Description
Pin 1 None - - -
Pin 2 TXD Ouput RS232 RS232 control signal
Pin 3 RXD Input RS232 RS232 control signal
Pin 4 None - - -
Pin 5 GND GND GND Signal reference point
Pin 6 Carrier DET Ouput 0-5V (TTL) Carrier detection output
Pin 7 None - - -
Pin 8 Flow control Ouput RS232 RS232 control signal
Pin 9 AUDIO OUT Ouput 1Vp-p @ 10kΩ load Receiver audio signal output