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The EXC/RTX19 is a modern direct-synthesis, frequency-agile broadcast quality STL (Studio to Transmitter Link), which may be factory preset on a very wide frequency range from VHF to SHF. The design of this equipment derives from a refinement of the time and field proven EXC/RTX18 series, coupled with the extended digital control features introduced on EXC25 and EXC30GT FM transmitter. Both transmitter and receiver offer full digital readout and complete and intuitive front panel control through a simple single jog coupled with extensive remote programmability and monitoring. They are accommodated in an elegant, modern looking and space efficient single unit 19” cabinet which requires exactly half the room of the previous series.

The excellent and even better modulation characteristics, i.e. low noise, distortion and broad pass-band, the performance of the optional internal stereo-encoder and decoder, the on field programmability, makes the EXC/RTX19 a superior choice for a broadcast-grade STL, with reliable and maintenance-free operation. They also perfectly mate with external digital companding encoders/decoders.

Additional information

Weight 5 kg
Dimensions 32 × 49 × 5 cm
Product can be split into multiple boxes

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specification

TECHNICAL SPECIFICATIONS

Factory preset frequency ranges
1350÷1375 MHz
1370÷1390 MHz

1429÷1433MHz
1510÷1530MHz

1660÷1670MHz
1700÷1725MHz

1725÷1750MHz
2367.5÷2372.5MHz

2440÷2.450MHz
2468.1÷2483.3MHz

Modulation:
FM, 75 kHz peak dev.

180kF3E in mono

256kF3E in stereo

Synthesis step:
25kHz

Frequency error:
<2.5 ppM 3' after power-on

RF output power
2W / 5W (1.3÷2.5 GHz)

RF harmonic products:
<-60 dBc, -70 dBc typ.

RF spurious products:
<-70 dBc, -80 dBc typ.

Audio/mpx input level:
-3.5 ÷ +12.5 dBm

@ ±75 kHz deviation
on female XLR conn.

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:
adjust. between 0 and > +7 dB

Preemphasis time constant:
0 / 50 / 75 µs ±2%

Mpx/mono output level:
-1.5 ÷ +12 dBm, 0.5dB/step on male XLR

S/N ratio (30÷20000 Hz. rms):
≥75 dB >80 typ. mono

≥72 dB >76 typ. stereo

Modulation distortion @ 1kHz / 100% dev.:
mono
≤0.1% 0.03% typ.

stereo, 1ch
≤0.30% 0.20% typ.

Stereo crosstalk (typ):
<-50 dB (100 ÷ 5000 Hz)

<-45 dB (30 ÷ 15000 Hz)

Audio channel freq. response:
30 Hz ÷ 15 kHz ±0.1dB

Wide-band demodulated LF output:
15 Hz ÷ 120 kHz +0.1/-3dB

Usable input level:
-90 ÷ -10dBm

(7µV÷70mV)

Sensitivity (typ):
Sin= -90dBm (7µV) mono

(S/N=60dB) Sin= -70dBm (70µV) stereo

Dynamic selectivity:
>+10dB typ @ δF=300 kHz

>+35dB typ @ δF=500 kHz

>+45dB typ @ δF=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

45 W (<15W Rx)

Battery backup/supply:
22.0 ÷ 28.0 V

≤1.8A @ 24V (0.4A Rx)

Operating temperature range:
0 ÷ 35 °C recomm.

-10 ÷ 45 °C max

Dimensions without handles:
19" 1 un. std. rack (each equipment)

483 x 43.5 x 320 mm

Weight:
4, 0kg (Tx), 3, 5kg (Rx)

features

Compact, direct modulated low-noise synthesized, oscillator, with 25 kHz programming step.
External on-field programmability of frequency and power, without any special instrument over a broad range
Simple and modular internal construction facilitates stage testing and servicing.
Stable, high precision and temperature compensated crystal time-base.
Balanced/unbalanced audio, MPX and separate aux- iliary SCA / RDS channel input., wide range level adjustable in small steps.
Up to 6 separate LF input and output connectors plus RF/IF monitor for extended flexibility of use.
Optional high performance digital stepwise stereo- encoder and decoder. This option may also be in- stalled as an upgrade on the field.
Narrow low-loss microwave input filter for high sensi- tivity and excellent performance in highly noisy RF environment
High efficiency, low-noise switch-mode power supply, with extended 90 ÷ 260 Vac input range and battery backup input with recharging option
Complete digital control of all internal circuitry and extremely wide monitoring facilities. RS232 port for complete remote control
Password protection of critical data and presets

Brand

Sielco

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TECHNICAL SPECIFICATIONS

  • Factory preset frequency ranges:1350÷1375 MHz 1370÷1390 MHz
  • 1429÷1433MHz 1510÷1530MHz
  • 1660÷1670MHz 1700÷1725MHz
  • 1725÷1750MHz 2367.5÷2372.5MHz
  • 2440÷2.450MHz 2468.1÷2483.3MHz
  • Other sub-ranges on request
  • Modulation:FM, 75 kHz peak dev.
  • 180kF3E in mono
  • 256kF3E in stereo
  • Synthesis step:25kHz
  • Frequency error:<2.5 ppM 3′ after power-on
  • RF output power:2W / 5W (1.3÷2.5 GHz)
  • RF harmonic products:<-60 dBc, -70 dBc typ.
  • RF spurious products:<-70 dBc, -80 dBc typ.
  • Audio/mpx input level:-3.5 ÷ +12.5 dBm @ ±75 kHz deviation on female XLR conn.
  • 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:adjust. between 0 and > +7 dB
  • Preemphasis time constant: 0 / 50 / 75 μs ±2%
  • Mpx/mono output level:-1.5 ÷ +12 dBm, 0.5dB/step on male XLR
  • S/N ratio (30÷20000 Hz. rms):≥75 dB >80 typ. mono
  • ≥72 dB >76 typ. stereo
  • Modulation distortion @ 1kHz / 100% dev.:mono: ≤0.1% 0.03% typ.
  • stereo, 1ch: ≤0.30% 0.20% typ.
  • Stereo crosstalk (typ):<-50 dB (100 ÷ 5000 Hz)
  • <-45 dB (30 ÷ 15000 Hz)
  • Audio channel freq. response:30 Hz ÷ 15 kHz ±0.1dB
  • Wide-band demodulated LF output:15 Hz ÷ 120 kHz +0.1/-3dB
  • Usable input level:-90 ÷ -10dBm (7μV÷70mV)
  • Sensitivity (typ):Sin= -90dBm (7μV) mono (S/N=60dB) Sin= -70dBm (70μV) stereo
  • Dynamic selectivity:>+10dB typ @ δF=300 kHz
  • >+35dB typ @ δF=500 kHz
  • >+45dB typ @ δF=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
  • 45 W (<15W Rx)
  • Battery backup/supply:22.0 ÷ 28.0 V
  • ≤1.8A @ 24V (0.4A Rx)
  • Operating temperature range:0 ÷ 35 °C recomm.
  • -10 ÷ 45 °C max
  • Dimensions without handles (each equipment):19″ 1 un. std. rack
  • 483 x 43.5 x 320 mm
  • Weight:4,0kg (Tx), 3,5kg (Rx)
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