SielCo EXC18B – RTX18/25 2-9 STL – Studio-to-Transmitter Link

Enhance your broadcasting capabilities with the SielCo EXC18B – RTX18B 2-9 STL Set. Operating within the SHF broadcasting band, this pair delivers exceptional data STL link performance. Leveraging the renowned design of the EXC/RTX18B series, known for market recognition, alongside cutting-edge digital control technology from the EXC25 FM transmitter, ensures top-notch quality.

Control is at your fingertips with the EXC18 transmitter and RTX18B receiver, featuring intuitive display and keyboard controls accessible either locally or remotely. Benefit from superior modulation characteristics, minimal noise and distortion, a wide passband, and optional stereo encoding/decoding. With easy field programmability and seamless compatibility with external digital audio encoders/decoders, the ECX-RTX 18B set offers unparalleled quality, reliability, and hassle-free maintenance. Elevate your studio-to-transmitter link experience with SielCo.

Highlights

•  Low noise direct synthesized local oscillator in 100kHz steps.
•  External programmability of frequency and power with no need of instruments.
•  Simple and modular internal design for an easy maintenance.
•  Precise time base, stabilized in temperature.
•  Wide adjusting range of input/output levels directly accessible on front panel.
•  High quality optional stereo encoder, field installable (later on) on the transmitter.
•  High quality optional stereo decoder, field installable (later on) on the receiver.
•  High efficiency power supply with high range input voltage.
•  Whole internal digital control without mechanical devices.
•  Wide and precise monitoring and control either local or remote.
•  Password protection at different levels of control and programming parameters.
•  Audio and Mpx inputs/outputs, balanced or unbalanced
•  RDS/SCA separated input
•  Frequency deviation monitored on the transmitter display
•  Input for battery backup with battery charger

Frequency range:

200-960 MHz in sub-ranges preset in factory
* 200-220MHz
* 215-245MHz
* 240-270MHz
* 300-340MHz
* 340-380MHz
* 400-440MHz
* 430-470MHz
* 840-890MHz
* 890-930MHz
* 930-960MHz

• Modulation: FM, 75 kHz peak 180kF3E in mono 256kF3E in stereo

• Synthesis step: 10kHz (VHF/UHF) 25kHz (SHF)
• Frequency error: <2.5 ppM 3′ after power-on
• RF output power: 7W / 15W (215÷960 MHz) 2W / 5W (1.3÷2.5 GHz)
• RF harmonic products: <-60 dBc, -70 dBc
• RF spurious products: <-70 dBc, -80 dBc
• Audio/mpx input level: -3.5 ÷ +12.5 dBm @ ±75 kHz deviation on female XLR
• Aux channel input level (on 10 k ohm): -12.5 ÷ +3.5 dBm @ ±7.5 kHz dev. -24 ÷ -8 dBm @ ±2 kHz dev.
• Transmitter LF monitor output level: 0 ÷ +10 dBm @ ±75 kHz dev.
• Deviation limiter: between 0 and > +7 dB
• Mpx/mono output level: -1.5 ÷ +12 dBm,0.5dB/step on male XLR
• S/N ratio:75 dB >80 typ. mono (30÷20000 Hz. rms) :72 dB >76 typ. stereo
• Preemphasis time constant: 0 / 50 / 75 µs ±2%
• Modulation distortion @ 1kHz / 100% dev.: mono :s1% 0.03% typ.stereo, 1ch:s0.30% 0.20% typ.
• Stereo crosstalk (typ): <-50 dB (100 ÷ 5000 Hz)<-45 dB (30 ÷ 15000 Hz)
• Audio channel response:30 Hz ÷ 15 kHz ±0.1dB
• Wide-band demodulated LF output:15 Hz ÷ 120 kHz +0.1/-3dB
• Usable input level: -90 ÷ -10dBm(7mV÷70mV)
• Sensitivity (typ): Sin= -90dBm (7mV) mono (S/N=60dB)Sin= -70dBm (70mV) stereo
• Dynamic selectivity:>+10dB typ @ öF=300 kHz>+35dB typ @ öF=500 kHz >+45dB typ @ öF=1.0 MHz
• I/O lines: RF/LF disable, Direct pw, On the air, Low field, Alarm
• RS232 for monitoring and control
• Mains supply: 90 ÷ 260 Vac 50/60 Hz Tx 45 W @5W / <80W @15W Rx <15W
• Battery backup/supply: 0 ÷ 28.0 V:s2.8A @ 24V (0.4A Rx)
• Operating temperature range: 0 ÷ 35 °C -10 ÷ 45 °C max
• Dimensions without handles: 19″ 2 un. std. rack (each equipment) 483 x 88 x 320 mm
• Weight: 5,5kg (Tx), 5,0kg (Rx)