SENSOR Modular FM Transmitter

SENSOR combine low energy consumption, exceptional reliability, and advanced connectivity. Their sound is warm and clear, thanks to a high-fidelity design with very low distortion, excellent stereo separation, and a high signal-to-noise ratio.

Composed of SYNAPSE Exciter and CELL amplifier, SENSOR is DRM and IBOC ready.

Our new SENSOR 5000W FM Transmitter!!!

Main Key Features

The exciter and RF amplifier are housed in separate units.
Extreme Robustness and Reliability
Easy maintenance and low-cost ownership
Remote Access via HTML5 Web, TCP/IP, SNMP, Email, and Telegram
Weekly Power Derating Scheduler optimizes energy consumption by allowing multiple configurable power settings for each day.
Unmatched Audio Fidelity and versatile Audio Inputs
Exceptional efficiency and low power consumption
High SNR (85 dB), stereo separation (65 dB), ultra-low distortion (0.01%)
Smart Efficiency Algorithm: Dynamic DC voltage and bias control for optimal efficiency across frequencies and power levels

Available Options

High-performance stereo encoder.
Automatic audio input backup.
Digital audio inputs: AES/EBU, IP Streaming (AoIP), USB Pen Drive playback.
Dynamic RDS encoder with TMC function
Web TCP/IP and SNMP connectivity for remote access
Frequency bands starting from 60MHz (Chile and Brazil), including Japanese (JPN) and Russian (OIRT 66-74MHz) standards.
External clock input for SFN synchronization
Digital composite input at 192kHz

Highlights

One band Processor Intelligent Soft Limiter: Limits the maximum deviation while ensuring high volume output without distortion.
Efficiency: Achieves up to 88% RF and 79% overall efficiency, consistently maintained across all frequencies and power levels through intelligent control.
Robust LDMOS 50V with 6th Generation Planar Technology, offering VSWR tolerance greater than 65:1 at all phase angles, specifically designed for enhanced durability and ruggedness in FM and ISM applications.
Spectral Purity: -100dBc spurious, -84dBc harmonics.
Self-Protected Plug-In Power Supply: Wide voltage range (90-250 V) for enhanced reliability, in-cludes AC mains filtering. Lightning and Overvoltage Protection, as well as Delayed Energiza-tion option.
Durable Construction: Features an aluminium body, tropicalized PCBs, and an air filter for dust protection. The air-ducted architecture protects internal electronic components from direct air-flow, preventing failures due to air corrosion.
RF Planar Architecture ensures maximum reproducibility and consistency in RF amplifier quality. The Copper Carrier enhances heat dissipation and simplifies maintenance.
Broadband Output Filter: Optimal spectral purity without tuning.
Standards Compliance: Meets ETSI, CCIR, FCC requirements.

PRODUCT SPECIFICATION AND PRICING

Product Name: SENSOR
Rated Power Output: 5000 W
Frequency Range: 87.5-108.0 MHz
List Price (EUR): €7,800
Discounted Price: €6,400
Delivery Time: On stock

TECHNICHAL CHARACTERISTICS

COMPOSED BY

Exciter type: SYNAPSE 10W
RF Amplifier: CELL 5000

OUTPUT POWER WATTS

Output Power: 5000W
Max Output Power: 5.500
FM+HD 20dBc Max: 4.750W
FM HD 14dBc Max: 3.450W
FM HD 10dBc Max: 3.000W
HD Only 20dBc Max: 1.950W
HD Only 14dBc Max: 1.650W
HD Only 10 dBc Max: 1.450W
OutputConnector: 7/8

ELECTRICAL

Overall Efficiency: 75%
RF Efficiency: 88%
Power Consumption: 6.667W
AC Power Factor: 0.98%

AC Mains Config 1ph 22VAC 2-wire plus safety ground
AC Input Voltage (V): 220
Total Amps (A): 32
AC FuseSize: 45
Possible AC Conductor Size AWG: 7
Possible AC Conductor Size mm2: 10

AC Mains Config 3ph 380VAC: 4-wire WYE
AC Input Voltage (V): 380
Total Amps (A): 11
AC FuseSize: 15
Possible AC Conductor Size AWG: 11
Possible AC Conductor Size mm2: 4

AC Mains Config 3ph 220VAC 3-wire closed DELTA or WYE plus safety ground
AC Input Voltage (V): 220
Total Amps (A): 19
AC FuseSize: 26
Possible AC Conductor Size AWG: 9
Possible AC Conductor Size mm2: 6

COOLING

CoolingType: Forced Air
CoolingAirVolumem3h: 708m3h
HeatDissipationBTU: 5.556BTU
Heat Dissipaiton: 1.667W
AirConditioningLoad: 476W

MECHANICAL

NumberOfCabinets: 2
Cabinettype: 19U
RackUnitsHeight: 4.3U
Width: mm
Depth: 640mm
Height: 150mm
Weight: 29kg

PACKAGING

PackageWidth: 780mm
PackageDepth: 610mm
PackageHeight: 330mm
PackageWeight: 32mm

ENVIRONMENTAL

Altitude: 4.000m
AmbientTempRange: 0 to 45deg de-rated 2deg per each 300msl
Humidity: 95% noncondensing

RADIOELECTRICS CHARACTERISTICS

Frequency Range: 87.5 ÷ 108.00 MHz, Programmable in 10 KHz steps
Range of adjustment from 100 to maximum power.
On request 66 ÷ 74 MHz (OIRT), 76 ÷ 90 MHz (JPN) Bands.
Frequency Stability: better than ±150Hz from -10 to +50°C
Modulation capability max deviation: +/-150kHz.
Frequency Control: Synthesizer µprocessor control.
Output Impedance: 50 ohm.
Display: forward/reflection power and modulation indicator
Type of Modulation: Direct frequency modulation of carrier frequency. F3E Stereo with Subcarrier and Mono.
Lock in Time: Typ. 4 second.
Off Lock Attenuation: ≥ -80 dBc.
Modulation Mode: Mono, Stereo, Multiplex, SCA, RDS, Aux.
Pre-emphasis: Flat(0)/50/75 µs selectable from front panel.
Asynchronous AM S/N Ratio: -60 dB below reference carrier. 100% AM modulation @ 400 Hz, without FM modulation.
Synchronous AM S/N Ratio: -60 dB below reference carrier. 100% AM modulation@ 400 Hz with FM modulation ±75 KHz @ 400 Hz.
RF Harmonics: Exceeds ETSI/EBU/CCIR/FCC requirements. better than 84 dbc
RF Spurious: Exceeds ETSI/EBU/CCIR/FCC requirements. better than 84 dbc
Output power on/off and adjustable from front panel and remotely.
Overall Efficiency up to 80%.
Monitor RF: -60 dBc, BNC connector
VSWR: 1.5:1 Maximum with automatic fold-back at higher VSWR

MONAURAL OPERATION

Audio Input Impedance: 600 ohm balanced, 15 Kohms unbalanced.
Audio Input Level: -6 to +12 dBm. (Other range on request)
Input Connector: XLR female.
Audio Frequency Response: ±0.15 dB, 30 Hz to 15 KHz.
Total Harmonic Distortion + Noise: 0.03% @ 400 Hz
Intermodulation Distortion: 0.03%, 1 KHz/1.3 KHz, 1:1 ratio
Transient Intermodulation Distortion: 0.03%, 2.96KHz square wave and 14 KHz sine wave.
FM S/N Ratio: -89 dB RMS detector, -85 dB below ±75 KHz deviation, 50 µs de-emphasis, weighted.

MULTIPLEX OPERATION

Composite Input Impedance: 5 Kohm unbalanced.
Composite Input Level: 3.5Vp-p for ±75KHz deviation.
Input Connector: BNC female.
Composite Amplitude Response: : ≤ ± 0.1dB, from 30Hz to 53kHz
Total Harmonic Distortion + Noise: 0.03% @ 400 Hz
Intermodulation Distortion: 0.03%, 1 KHz/1.3 KHz, 1:1 ratio
Transient Intermodulation Distortion: 0.03%, 2.96 KHz square wave and 14 KHz sine wave.
FM S/N Ratio: -89 dB RMS detector, -85 dB below ±75 KHz deviation, 50 µs de-emphasis, weighted.

STEREO OPERATION

Audio Input Impedance: 600 ohm balanced, 15 Kohm unbalanced.
Audio Input Level: -12 to +12 dBm.
Input Connector: XLR female.
Audio Frequency Response: ±015 dB from 30 Hz to 15 KHz.
Total Harmonic Distortion + Noise: 0,03% @ 400 Hz
Intermodulation Distortion: 0,02%, 60Hz /7kHz 4:1 ratio +4dBu
Transient Intermodulation Distortion: 0.03%, 2.96 KHz square wave and 14 KHz sine wave.
FM S/N Ratio: -85 dB RMS detector, -82 dB below ±75 KHz deviation, : 50 µs de-emphasis, weighted.
Stereo Separation: 30÷80 Hz ≥ -53 dB, 80Hz÷15 KHz ≥ -65 dB (Typ. 70 dB).
Crosstalk attenuation: Main to Sub -55 dB 30 Hz to 15 KHz :
38 KHz Suppression: ≥ -70 dB (typ. -85 dB).
Pilot Frequency: 19 KHz ± 1 Hz
Phase Pilot: ± 2° adjustable
Output Pilot: 1 Vpp., BNC female
Audio Filter Attenuation: ≥ -55 dB @ 19 KHz, -45 dB 20 KHz to 100 KHz.
Modes: Stereo, Mono L+R, Mono L, Mono R

.

AES/EBU OPERATION

Input Level: -10dBfs to 0dBfs
Input Connector: XLR female, optical TOS-LINK.
Input Impedance: 110 ohm.
Data Format: S/PDF,AES/EBU, IEC958, EIAJCP340/1201.
D/A Converter: 24 bit.
Sampling Frequency: from 32 to 96 KHz with automatic selection
Stereo separation (crosstalk): ≥50dB,100Hz to 5kHz
Amplitude response: ≤ ± 0.1dB, from 30Hz to 15kHz
FM S/N Ratio: -85 dB below ±75 KHz deviation, 50 µs de-emphasis, weighted.

SCA, RDS, AUX OPERATION

Input Connector: BNC female
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.

AUXILIARY CONNECTIONS

N°2 RS485: Serial Interface connector RJ45 back panel.
Telemetry Interface: connector DB25F back panel.

ENVIRONMENTAL

Operating temperature: -10°C to +50°C.
Max Operating Altitude: 4000 mt.
Relative Humidity Range: 0 to 95% non condensing.
Protection against Lightening, Dust and Corrosion

ADVANTAGES OF MODULAR ARCHITECTURE

Sometimes, the RF amplifier and exciter are integrated into a single enclosure, which complicates maintenance.

The SENSOR modular system overcomes these challenges by making each component independent and self-sufficient, greatly simplifying troubleshooting and fault resolution.

Another key advantage is that both, the FM Exciter and the RF Amplifier, are designed to operate independently and, each of them, includes all necessary components such as power supply, fans, control logic, output filter, and protections. Testing or repairing it, whether on-site or in the lab, requires only a dummy load and an standard power cord, without the need for special tools.

SYNAPSE FRONT VIEW

SYNAPSE BACK VIEW

SYNAPSE COMPACT LOW POWER FM TRANSMITTER

SYNAPSE embodies:

Extreme robustness and reliability
Exceptional energy efficiency for lower consumption
Remote access via HTML5 WEB, TCP/IP, SNMP, Mail, and Telegram
Easy maintenance with minimal costs
Versatile audio inputs, including STEREO, MPX Composite, AES/EBU digital, or MONO
Unmatched audio fidelity

SYNAPSE BLOCK DIAGRAM

CELL RF Amplifier

The FM Amplifier is the foundation of all SENSOR configuration. It has been optimized to enhance the performance of large broadcast systems, allowing them to benefit from shared optimizations.

Features with Low-Level RF Power Input thanks a pre-driver requiring less than 1W of power, allowing to drive high-power transmitters using a small 30W exciter. It also supports the installation of an attenuator/isolator on the splitter’s input, providing added flexibility and protection.

Benefits:

Optimal Load to the Exciter:The input attenuator and pre-amplifier provide an optimum load to the exciter.
Prevents Exciter Shutdown: Avoids VSWR feedback from the amplifiers.
Isolated Exciter Input: The exciter drives a resistive load rather than directly driving the LDMOS input.

Note: In configurations with only one RF amplifier, a 10dB input attenuator is installed.

Key Features of the RF Amplifier include: