STMAX 9000+ FM Exciter

Technical Specifications:

• RF Output Power: Adjustable from 0 to 15W, 0-25W, 0-50W, 0-75W via an LCD screen with gradual steps. The power adjustment range can also be limited (0-1W, 0-2W, 0-3W, 0-4W … 0-15W, 0-off) using a jumper (options vary depending on the model).

• Output Connector: Female BNC

• Output Impedance: 50 Ohms

• Frequency Range: 87.5 – 108 MHz

• PLL Steps: 50 KHz – 500 KHz, adjustable

• Frequency Stability: ± 20 Hz

• Harmonic and Spurious Rejection: Harmonics: > 50 dB, Spurious: > -50 dBc

• Power Supply:

  • 15W model: 12-15V/2.5A

  • 25W model: 12-15V/4.5A

  • 50W model: 12-15V/7A

  • 75W model: 12-15V/12A

• Power Connector: 15W and 25W (barrel type, center +); 50W and 75W models: new design with plug-in and 2 screw connectors

• Frequency Control: Quartz Locked PLL, integrated digital modulator

• Audio Performance: Less than 0.1% distortion, 20Hz – 15KHz

• Protection Features:

  • SWR protection

  • Over-temperature protection

  • Polarity protection

• Selectable Functions via LCD:

  • Pre-emphasis: 50μS, 75μS, or none

  • Stereo pilot level

  • RDS pilot level

  • MPX level

• Audio Specifications:

  • Audio Input Impedance: 1kΩ, unbalanced

  • Audio Input Level: -10dBu, +4dBu (selectable)

  • Stereo Separation: >50 dB

  • Signal-to-Noise Ratio: >90 dB

• Dimensions: PCB 100 x 125 mm

• Audio Connections:

  • 2x RCA

  • 14-pin connector for external input board with balanced XLR inputs

• RF Monitor: Solder pads for RF monitoring

STMAX 9000 Includes:

• 2x16 LCD display with 3 buttons

• Audio input board AES/EBU (RCA+XLR+USB) + 20cm flat cable

• Flat cable for LCD display

To be Purchased Separately:

• Power supply for STMAX 9000

• Power selection, see options on the product page

• Microcontroller with software for 76-108MHz, see options on the product page