High Power Broadcast 500W FM Transmitters Radio
CORTEX

Union-Semicompact: composed by SYNAPSE Exciter and CELL Amplifier
Build with Air Cooled High Efficiency Stereo Analog & Digital DDS
Frequency Modulation Profesional Radio Station Equipment

OVERALL AMPLIFIER CHARACTERISTICS

Hardware and Software Protections

• Over and Under Voltage DC, Over and Under Voltage AC, RF and Power Supply Temperature, RF Coaxial

Output Open or Short Circuit

• Capability of a long working time on Short/Open loads at all phase angles without any damage.
• Last generation 1400 W LDMOS, VSWR > 65:1 @ all Phase Angles, designed for enhanced ruggedness ISM applications and plasma generators.
• Integrated AC Mains filtering.
• Integrated lightning protection.
• Delayed energized of the system after Mains Power Blackout prevents against peaks and high variation voltages typical of this events.
• Soft controlled sequential start-up so to reduce the Inrush current during OFF to ON transition. WEB/SNMP Telemetry and Remote Control
• Full Local or Remote control by by logon username and password.
• Remote control with Smartphones or Tablet.
• Host Logic and tele-measurement (TM, TC & TA).
• Remote control and monitoring via SNMP and/or WEB interface.
• With logbook or log file to record error or alarm message.
• Display of forward/reflection power value and reflection high alarm.
• TCP/IP, SNMP, GSM and PSTN TELEMETRY

Human Interface

• Each module is equipped with a logic controller that allows full control by a local operator.
• All transmitter and amplifier parameters required for diagnostics can be retrieved locally or remotely via standard (IP) protocol and standard software (web browser, SNMP).
• Multilingual user guidance.
• High Definition, high contrast Color Oled display.
• Quick set of thresholds for protections level. This set is based on assignment of three “flavors” or PERSONALITIES: Conservative (primary target = protect itself), Standard (balanced), Aggressive (primary target = transmission without interruptions).

TECHNICHAL CHARACTERISTICS

CELL Tech HIGH Efficiency

• Output power on/off and adjustable from front panel and remotely.
• Overall Efficiency up to 80%.
• RF Input Connector: N Type.
• RF Output Impedance: 50 ohm.
• RF Output Connector: 7/16 Type. (other on request).
• Monitor RF: -57 dBc, BNC connector.
• VSWR: 1.5:1 Maximum with automatic fold-back at higher VSWR.
• Very high efficiency (more than 75%.
• Last LDMOS technology for power modules.
• Ultra High RF efficiency (>80 % typ.) software optimized for each power level.
• Lowest weight and dimensions in the industry.
• Lower device heating.
• Lower room heating.
• Lower space occupied.
• Lower maintenance needed.
• Small dimensions and low weight, reduce transportation costs and simplifying the logistic.
• Longer Component Lifespan.
• Reduced Electricity Costs.
• Lower Maintenance Costs.
• Reduced Cooling Costs.
• Fewer Fans.

Electrical Characteristics

• Very high harmonics suppression (-90dB).
• Independent, individual APC (Automatic Power Control) circuit maintain a constant output power set.
• Frequency-response-compensated directional couplers and precision internal indicators.
• Distributed less binding Low Pass filter.

AC Input Power: 220/400 VAC ±15%, 50/60 HZ singlephase
Power factor > 0.98.
Cooling: Forced air

ENVIRONMENTAL

Operating temperature: -10°C to +50°C.
Max Operating Altitude: 4000 mt.
Relative Humidity Range: 0 to 95% non condensing.

PHYSICAL DIMENSIONS

Mounting: Standard 19” chassis 2 U rack.
Size: 485 mm. W x 550 mm. D x 88 mm. H.
Weight: ~ 17 Kg.
When developing CELL Series, the main target was: Always on Air, Less than 7 kg (15 lbs) of modules-weight, Easy maintenance, Low consumption and High Efficiency

OVERALL EXCITER

CHARACTERISTICS GENERAL

Power Output: 50 W adjustable from front panel.
RF Output Impedance: 50 ohm.
RF Output Connector: “N” type.
Monitor RF: -46 dBc, BNC connector
VSWR: 1.5:1 Maximum with automatic fold-back at higher VSWR
Frequency Range: 87.5 ÷ 108.00 MHz, on request 66 ÷ 74 MHz ( OIRT), 76 ÷ 90 MHz (JPN) Programmable in 10 KHz steps.
Frequency Stability: ±1 ppm from -5 to 50°C.
Frequency Control: Synthesizer μprocessor control.
Type of Modulation: Direct frequency modulation of carrier frequency, F3E stereo and mono.
Lock in Time: Typ. 4 second.
Off Lock Attenuation: ≥ -60 dBc.
Modulation Capability: ±150 KHz.
Modulation Mode: Mono, Stereo, Multiplex, Aux.
Preemphasis: Flat/50/75μs selectable internal jumper.
Asynchronous AM S/N Ratio: -80 dB below reference carrier with 100% AM modulation @ 400 Hz, without FM modulation.
Synchronous AM S/N Ratio: -65 dB below reference carrier with 100% AM modulation @ 400 Hz with FM modulation ±75 KHz @ 400 Hz.
RF Harmonics: Exceeds EBU/CCIR/FCC requirements.
RF Spurious: Exceeds ETSI/CCIR/FCC requirements.

MONAURAL OPERATION

Audio Input Impedance: 600 ohm balanced, 10 Kohms unbalanced.
Audio Input Level: -3 to +9 dBm.
Input Connector: XLR female.
Audio Frequency Response: ±0.1 dB, 30 Hz to 15 KHz.
Total Harmonic Distortion + Noise: 0.05% @ 400 Hz
Intermodulation Distortion: 0.05%, 1 KHz/1.3 KHz, 1:1 ratio
Transient Interm. Dist.: 0,05%, 2.96 KHz square wave and 14 KHz sine wave.
Distortion: 0.05%, 2.96KHz square wave and 14 KHz sine wave.
FM S/N Ratio: -82 dB RMS, -80 dB at ±75 KHz dev., 50 μs de-emphasis, weighted.

MULTIPLEX OPERATION

Composite Input Impedance: 1.2 Kohm unbalanced.
Composite Input Level: +6 to +12 dBm
Input Connector: BNC female.
Composite Amplitude Response: ±0.2 dB, 30 Hz to 100 KHz.
Total Harmonic Distortion + Noise: 0.05% @ 400 Hz
Intermodulation Distortion: 30 Hz to 15 kHz * 0.05% @ 400 Hz
Transient Interm. Dist.: 0,05%, 2.96 KHz square wave and 14 KHz sine wave.
FM S/N Ratio: -83 dB RMS detector, -80 dB AT ±75 KHz dev., 50 μs de-emphasis, weighted.

STEREO OPERATION

Audio Input Impedance: 600 ohm balanced, 10 Kohm unbalanced.
Audio Input Level: -3 to +9 dBm.
Input Connector: XLR female.Audio Frequency Response: ±0.1 dB, 30 Hz to 15 KHz.
Total Harmonic Distortion + Noise: 0.05% @ 400 Hz
Intermodulation Distortion: 0.05%, 1 KHz/1.3 KHz, 1:1 ratio
Transient Interm. Dist.: 0,05%, 2.96 KHz square wave and 14 KHz sine wave.
FM S/N Ratio: -73 dB RMS, -71 dB at ±75 KHz dev., 50 μs de-emphasis, weighted.
Stereo Separation: 30÷80 Hz ≥ -50 dB, 80Hz÷15 KHz ≥ -60 dB (Typ. 65 dB).
Crosstalk attenuation: Main to Sub -50 dB 30 Hz to 15 KHz (typ. -55 dB 100 Hz to 8 KHz).
38 KHz Suppression: ≥ -65 dB (typ. -80 dB).
Pilot Frequency: 19 KHz ± 1 Hz
Output Pilot: 1 Vpp., BNC female
Audio Filter Attenuation: ≥ -44 dB @ 19 KHz, > -27 dB
20 KHz to 100 KHz.
Modes: Stereo, Mono

AUXILIARY INPUT

Input Impedance: 3 Kohm.
Input Level: -3 to +6 dBm.
Frequency Response: ±0.2 dB, 40 KHz to100 KHz.
Input Connector: BNC female. Most SCA, RDS, AUX, performance parameters are determined primarily by the generator used.

TELEMERTY CONNECTOR

DB9: female connector back panel for remote connections.

OPTIONS

DIGITAL STEREO CODERY
RDS/RBDS CODER PROGRAMMABLE BY PC
OIRT & JPN VERSION
LPFM CODE STATION
ELECTRICAL
AC Input Power: 90÷260 VAC 50/60 HZ single phase.
Cooling: Forced air with internal long life brushless ball bearing fan.
Acoustic noise:< -56 dBa @ 1 m.

ENVIRONMENTAL

Operating temperature: -10°C to +50°C.
Max Operating Altitude: 3000 mt asl.
Relative Humidity Range: 0 to 95% non condensing.

PHYSICAL DIMENSION

Mounting: Standard 19” chassis 1 U rack.
Dimensions: W: 78cm x H: 33cm x D: 61cm
Weight: ~ 22Kg