The S7603 FM transmitter is an evolution of the highly modular architecture for which
Eddystone Broadcast transmitters are known. The use of 300W hot-pluggable Power
Amplifier modules means that removal of amplifiers can be carried out with minimal
reduction in output power. The design also features highly efficient hot-pluggable
switched mode power supplies which also provide ease of servicing. Both PA and SMPSU modules are common to the entire 7600 range from 500W to 20kW,
resulting in greatly reduced spares holding costs for networks and groups.
System Overview
The drive input is fed to an internal 12 way splitter which provides the PA module input drive. Each E2021 Power
amplifier uses dual packaged MOSFET’s mounted on a substantial heatsink assembly with minimum airflow over RF
components. DC power is fed to the RF modules from the 6 switched mode power supplies. Internal control and self
protection in case of reverse power, excess current or over temperature is handled within each individual E2021 power
amplifier module with all monitoring being microprocessor derived. Each module transmits its internal parameters to the
central transmitter controller/monitor (E2023) and parameters are displayed on an easy to read backlit LCD screen.
Outputs from the 12 Power modules are combined via a highly efficient 12 way common rail Wilkinson combiner. The
combined RF output is then fed to the output coupler and harmonic filter.
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Features
Compact Amplifier and PSU Modules are replaceable On Air
Fully compliant with ETS 300 384 specification for FM transmitters
Easily configured into a wide range of system architectures
Uses highly efficient SMPS power supplies with PF correction
Comprehensive remote control and monitoring facilities
LCD display ensures easy local monitoring
Cooling Systems
Eddystone Broadcast low power transmitters have self contained redundant cooling fans mounted on the rear of the
transmitter. This cooling system can be ducted if required and bespoke systems can be provided to meet special
requirements.
Specifications
|
Power Output
|
3kW (Adjustable to -6dB) |
|---|---|
|
Operating Frequency
|
87.5 to 108 MHz |
|
RF Output Load Impedance
|
50 ohm unbalanced |
|
RF Output Connector
|
7-16 (female) DIN (7/8″ available on request) |
|
Maximum VSWR
|
Able to maintain full power at 1.5:1 before protection cuts in |
|
Mains Power Supply
|
Single phase 176-264V |
|
RF Harmonic Output
|
Better than or equal to -79dBc |
|
Power Factor
|
Typically 99% |
|
Ambient Temperature Range
|
0°C to +55°C at an altitude up to 3000M |
|
Overall Efficiency
|
Typically 60% |
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| description | model | height in rack units |
| EXCITER/TRANSMITTERS | ||
| 10W stereo exciter/transmitter | XE10S | 1u |
| 30W stereo exciter/transmitter | XE30S | 1u |
| 45W stereo exciter/transmitter | XE40S | 1u |
| 75W stereo exciter/transmitter | XE75S | 2u |
| 150W stereo exciter/transmitter | XE150S | 2u |
| 300W stereo exciter/transmitter | XE300S | 2u |
| AMPLIFIERS | ||
| Low cost semi-modular 500W amplifier | XA500 | 3u |
| Low cost semi-modular 1kW amplifier | XA1000 | 3u |
| Eddystone 500W modular amplifier | S79005/10 | 7u |
| Eddystone 1kW modular amplifier | S7601/10 | 12u |
| Eddystone 2kW modular amplifier | S7602/10 | 14u |
| Eddystone 3kW modular amplifier | S7603/10 | 20u |
| Eddystone 5kW modular amplifier | S7605C/10 | 26u |
| Eddystone 10kW modular amplifier | S7610C/10 | 45u |
| OPTIONAL EXTRAS FOR AMPLIFIERS AND EXCITERS | ||
| TCP/IP | TCP/IP | |
| Spare Amplifier module | E2021-07 | |
| Spare power supply module | E2322-01/CC | |
| DUMMY LOADS | ||
| 250W dummy load | CRC-10 | |
| 400W dummy load | CRC-11 | |
| 600W dummy load | CRC-12 | |
| 1kW dummy load | CRC-13 | |
| 2.5kW dummy load | CRC-15 | |
| 5kW dummy load | TBA | |
| 10kW dummy load | CRC-17 | |
| CABINETS | ||
| 15u x 600mm deep. Fully wired and tested | 15u cab | 15u |
| 24u x 600mm deep. Fully wired and tested | 24u cab | 24u |
| 36u x 600mm deep. Fully wired and tested | 36u cab | 36u |
| 42u x 600mm deep. Fully wired and tested | 42u cab | 42u |
| PROGRAMME INPUT AND MONITORING EQUIPMENT | ||
| Audio processor | DSPX mini | 1u |
| Audio processor | Omnia One | 1u |
| Guardian 3 audio selector unit | Guardian 3 | 1u |
| RDS encoder | PRO-01 | 1u |
| Modulation monitor | DB4004 | 1u |
| Audio amplifier/speakers | RM2/S4 | 1u |
| 12 way mains distribution unit | MDU12 | 1u |
| Exciter changeover unit | E2075-01 | 1u |
| Studio to transmitter link system. One stereo channel. Complete with Transmitter, receiver, 2 x antennas and 2 x cables with installation accessories. Frequency to be stated at time of order. | RSL/TSL900 | TX-1u, RX-1u |
| Remote monitoring & control unit. Connects to multiple transmitters at site using TCP/IP interface. Connects remotely via customers LAN. Includes dial up GSM modem for text alerts and 2 x one-wire temperature sensors. Also incli=udes parallel I/O to connect to other station alarms and remote software to set up control computer. Also allows control of multiple sites on a single screen. (Remote computer not included) | IRMU | 1u |
| PACKING | ||
| Crating for transmitters 6u to 15u | crating 0 | |
| Crating for transmitters 16u to 25u | crating 1 | |
| Crating for transmitters 26u to 35u | crating 2 | |
| Crating for transmitters 36u+ | crating 3 |
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Eddystone Broadcast S7603 3kW FM Transmitter
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Eddystone Broadcast S7603 3kW FM Transmitter
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Eddystone Broadcast S7603 3kW FM Transmitter
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Eddystone Broadcast S7603 3kW FM Transmitter
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Eddystone Broadcast S7603 3kW FM Transmitter
