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STL Transmitter/Receiver

Product Category:Products > STL
Brief introduction:
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  • Details Introduction

Description  : 

The STL Studio Transmitter Link / Inter-city Relay is a VHF / UHF FM communications system providing a high quality broadcast audio channel with three optional bands.
These systems offer greater rejection of interference, superior noise performance, much lower channel cross-talk, and greater redundancy than currently available composite STL systems.

Features  : 

●Synthesized from 220 to 260MHz, 400 to 420MHz and 450 to 490MHz,The transmitted and received frequency can be easily set by digital front panel.
●Suitable for digital audio. The subsonic over modulation and the low frequency phase distortion are controlled by a feedback circuit in order to exalt the audio quality of the latest digital systems.
●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 to reduce the STL’s antennas investment.
●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.

Specification  : 

***TECHNICAL CHARACTERISTICS of TRANSMITTER
-Frequency range:
220 to 239.99 MHz ,

240 to 259.99 MHz ,
400 to 419.99 MHz ,
450 to 469.99 MHz ,
470 to 489.99 MHz ,
-Modulation: FM, ±75 KHz peak deviation
-Frequency stability: <±100 Hz
-RF output power: 0 to 25 W ±0.5 dB
-Max reflected power: 5 W
-Harmonic suppression: <-65 dBC
-RF output impedance: 50 Ω
-RF output connector: N Type -female
-Audio/MPX input level: -10 to +13 dBm @±75 KHz deviation
-Audio/MPX input impedance: 10 KΩ / 600 Ω, Balanced / unbalanced
-Audio input connector: XLR-female
-AUX / MPX input level: -10 to +13 dBm @±75 KHz deviation
-AUX channel input impedance: 10 KΩ
-MPX and AUX input connector: BNC-female
-Pre-emphasis: 0 / 50 / 75 us
-S/N ratio Mono: >73 dB (20 to 20 KHz)
-S/N ratio Stereo: >68 dB (20 to 15 KHz)
-Distortion: <0.05% THD @± 75 KHz dev.
<0.2% THD @± 150 KHz dev. (limiter threshold > 150 KHz)
-Stereo crosstalk:
>60 dB (100 to 5 KHz)
>50 dB (20 to 15 KHz) int. MPX encoder
>60 dB with ext. MPX encoder
-Audio channel frequency response: 20 to 15 KHz ± 0.15 dB
-MPX input frequency response: 10 to 100 KHz ± 0.15 dB
-AUX input frequency response: 10 to 100 KHz ± 0.15 dB
-Mains power supply requirements: 90~264VAC; 127~370VDC, Full range universal input
-Operating temperature range: -10 to 45
-Dimensions : 483 x 89 x 400 mm, rack std. 19” 2U
-Weight: 6.5 Kg

***TECHNICAL CHARACTERISTICS of RECEIVER
-Frequency range:
220 to 239.99 MHz
240 to 259.99 MHz ,
400 to 419.99 MHz ,
450 to 469.99 MHz , 
470 to 489.99 MHz ,
-Sensitivity: -98 dBm at 16 dB SINDA
-Frequency response: 20 Hz to 53 KHz ±0.1 dB
-Stereo separation: 20 Hz to 15 KHz >58 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: 600Ω balanced
-Stereo audio output connector: XLR-M
-MPX output impedance: 10KΩ
-MPX output connector: BNC-female
-Monitor output: >2x0.2 W stereo at 120Ω
-Monitor output connector: 6.3mm stereo phone jack
-RF input impedance: 50Ω
-RF input connector: N Type -female
-AC power: 85~264VAC; 120~370VDC, Full range universal input
-Power consumption: approx 25W from AC
-Operating temperature range: -10 to 45
-Dimensions : 483 x 89 x 320 mm , rack std. 19” 2U
-Weight: 5 Kg 

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Shanghai Teng Guang Broadcasting Equipment Co., Ltd.
Add: West 3/F, Bldg.12, No.3199 Zhenbei Road,Shanghai 200331, China