Need to send your audio from studio to the remote transmitter? Now you can do this with STLMAX series of VHF and UHF receivers and transmitters. Up to 10W/25W of power and covering from 45MHz up to 850MHz! STLMax6000+ VHF/UHF Studio to Transmitter audio link is a MPX Stereo wideband FM audio system providing a high quality broadcast audio wireless bridge.
- Synthesized from 45-850MHz (specify 10MHz segment at the time of ordering) - The transmitted and received frequency can be set by digital front panel (UP/DOWN keys) - Suitable for MPX systems (stereo encoder in studio) or for 2-channel systems (2 audio channels, left+right, with 19KHz notch filter) - Built-in speaker driving amp for easy monitoring at the receiving side - Low THD distortion: the THD value with stereo or mono demodulated and deemphasized signals is negligible - Flat frequency response: due to the latest generation technology and the components precision the flatness of frequency response is absolute - Low noise: the excellent signal to noise ratio either in mono or in stereo allows the use of this STL’s in multi-hops networks without decreasing the audio quality - High sensitivity: it allows for more range with smaller antennas - Great RF immunity: allows to operate in most hostile RF environments - High adjacent channel rejection: obtained thanks to the excellent mechanical shielding and the precision of RF filtering - High frequency stability with the internal temperature compensated crystal reference - Integrated LCD Display: complete diagnostic and measurement front panel LCD displays - Integrated information display and protection controls: for all transmit parameter and protection for malfunction
- Transmitter is based on MAXPRO6000 so if you've used MAXPRO5000 or 6000 it will be very familiar to you - Synthesized from 45-850MHz (specify 10MHz segment at the time of ordering) - Modulation: FM, ±75 KHz peak deviation - Frequency stability: <±100 Hz - RF Output Power: 0 to 25 Watts, 0-25W (fully variable via LCD in nice gradual steps), LCD power adjustment range can also be limited to 0-1W, 0-2W, 0-3W, 0-4W ... 0-15W, 0-full, this is done with a jumper (exact options vary depending on model). - Output connector: BNC - Output Impedance: 50 Ohms - PLL Steps: 100KHz-500KHz, adjustable - Spurious/Harmonic rejection: Harmonics: >50dB, Spurious: >-75dB - Power Supply 15W: 12-15V/3A or car battery - Power Supply 25W/50W model: 48V/1.5A/2.5A - Quartz Locked PLL Frequency Control - Ultra Stable, Ultra Clean Output - Audio performance: Less than 0.1% distortion, 20Hz-75KHz - RF output ruggedness: SWR protection - Polarity protection, temp protection - Pre-emphasis, 50uS, 75uS or none - Audio Input Impedance: 10Kohm, unbalanced - Audio Input Level: 0 dB - S/N ratio: >90 dB - PC Board Size 15W, 25W and 50W model: 100x125mm - Weight: 0.4Kg - Audio input: solder pads
STL transmitter connectors - Audio solder pads - Antenna output: BNC - Power connector (12-15V or 48V depending on model) What is included with the transmitter? - The PCB board and LCD display. You will need to get an antenna, enclosure, power supply, a small fan and possibly a stereo encoder.
Difference between MPX and stereo STL - You can just use the STLMAX exciter directly as MPX link or you can feed the audio through stereo encoder (use se2000 or se5000 please).
Technical specifications for receiver: - Two-board design, RF receiver board + audio break-out board with XLR outputs and notch filters - Available for frequency: 45MHz-850MHz (specify 10MHz segment at the time of ordering) - Built-in speaker output for easy monitoring - Sensitivity: ~1uV 10dB SINAD (varies with frequency band) - Frequency response MPX: 20 Hz to 60 KHz ±0.1 dB - Stereo separation: 20 Hz to 15 KHz >40 dB - 19KHz notch attenation: > 60 dB - S/N Ratio : >65 dB @-40 dBm , 75 KHz dev. and 1 KHz mod. - THD : 20 Hz to 53 KHz <0.3% - Selectivity: ±160 KHz at -3 dB IF BW, ±500 KHz at -62 dB IF BW - Image rejection: >65 dB - Stereo audio output impedance: 50 ohm balanced - Stereo audio output connector: RCA/CINCH female - MPX output impedance: 75R - MPX output connector: BNC female and XLR balanced - Headphones output: >2x0.2 W stereo at 32 ohms - Headphones output connector: 3.5mm stereo phone jack - RF input impedance: 50ohm - RF input connector: BNC Type - female - Power: 12-15V DC, 1A - Operating temperature range: -15 to 50C - Dimensions RF receiver board: 125 x 100 x 30 mm - Dimensions audio breakout board: 80 x 100mm - Weight: 0.5Kg
STL receiver connectors - Antenna input: BNC - Power connector (12-15V 1A) - 2-pin jumper for small speaker - 3,5mm stereo phono jack for earphones - 2x stereo output (RCA) - BNC MPX output - 3-pin XLR balanced output
IMPORTANT: At the time of ordering please specify 10MHz frequency band, for example 210-220MHz.