0.5W FM Transmitter

Features:

• SMT design used throughout for maximum reliability
• 0.5W output power
• PLL synthesized for drift free operation
• Front panel digital control and display of all settings and parameters
• EMI filtering on audio and power inputs
• Super audio quality, rivals commercial broadcasts
• Factory assembled and tested to guaranteed specifications

   
• PLL technology of frequency complex
• Suitable for the FM radio in occident
• Range of frequency: 87.5-108.0MHz (Indents of other frequency are available)
• Support the switch of stereo & monophony
• ALC LM9318V
• Two-way 1602-LCD matrix screen display, keystroke to set the frequency and state
• With the mute switch
• With power-off memory function
• MIC & LINE two way input
• Within advanced circuit, logical structure, industrial standard. 

typical applications：

• Extension of home stereo system and computer audio - without wires.
• Listening aid for auditoriums, churches.
• Student-operated school radio station.
• College dorm favorite music broadcast service.
• Drive-ins, haunted hayrides, amusement parks, etc.
• Short-range, two-channel experiments and demonstrations.
• Professional quality for transmitting TV sound at exercise clubs
• Great for transmitting messages for realtors, state fairs, drive-ins, etc.
• Transmit music / MP3s from your home computer to your stereo
• Transmit mp3 players/walkmans/portable CD players to your
• Car Stereo
• The ideal campus or school radio station

technical parameters：

• Frequency: 87.5-108.0MHz (custom-built frequency is acceptable)

• Display mode: LCD matrix screen.

• Frequency adjusting mode: “DOWN” & “UP”, short press for 0.1MHz scantling setting (long press for speed)

• Frequency saving mode: auto save, power-off memory

• Warp of modulate: ≤±75KHz（100%）

• Sensitivity of modulate: 600mV

• Response of audio frequency: 100~15000Hz

• Audio distortion: ≤0.2%（F=75KHz，f=1KHz）

• S/N ratio: ≥60dB（1KHz 100%）

• Separate level of stereo: ≥-60dB（200~15000Hz)

• Transmit power: 0.5W

• Power supply:  DC12V

operate instructions:

• When first time to use, after scanning the circuit mode, the system would transmit the default frequency: 99.9MHz automatically.

• Pressing “up” button once, frequency would increase 0.1MHZ, if hold on pressing more than 1second, it would increase fleetly

• Pressing “DOWN” button once, frequency would decrease 0.1MHZ, if hold on pressing more than 1second, it would decrease fleetly

• Pressing “S/M” button to realize the switch between “STEREO” & “MONO” (inefficacy when mute)   

• Pressing “MUTE”button, mute output.

• press  the key " m1 to m4" ,it will show stored frequency.

• In any frequency, you can press  on "m1-m4" long time, it will memor this frequency.

• Need not to set the frequency every time to use, the system would save the last setting of frequency.