The marKoni High Power Line is definitely the top-class equipment manufactured by Telsat.
These transmitters provide brilliant performances using a simple and reliable architecture to reach very high power levels, by connecting in parallel 3KW or 5KW modules.
Each of these modules is completely independent, so it can be used in standalone in emergencies or for network reconfigurations.
The use of high-performance heatsinks and the high efficiency of active devices allows a remarkable weight decrease, making transport, installation and management simpler. Effective software algorithms protect the equipment from any cause of breakdown.
The output power is dynamically decreased to conservative values in case of environmental overheating, or reflected power from the antenna system.
The internal combiners loads are dimensioned to work indefinitely, even in unbalancing conditions thus ensuring a continuous service, without signal interruptions.
- Crystal Digital Sound purity
- Fully Digital Signal Processing
- Embedded RDS generator
- Single-chip Digital Processing guarantees maximum compactness
- Internal 32-bit Digital Signal Processing
- Unbeatable price/performance ratio
- Lifetime upgradeable firmware
- Fully remotely controllable by Web/SNMP interface
- Auto-calibration at power-on
- Absolutely no analogue trimming points
- Minimum BOM, maximum long-term reliability
- 1pps and 10MHz inputs for Synchro FM Operation
The Master Control Unit of the transmitters oversees all the general parameters of each individual component (exciters, change over systems, amplifiers, etc.), maintaining the same management characteristics of the marKoni low and medium power lines, granting an important uniformity, which delivers to the Users the maximum comfort and familiarity with all the marKoni products.
Through the very User's friendly touch screen interface it is possible to check or change the complete system parameters. All these information can be also managed remotely by the network interface on the back panel, otherwise even locally by using the Ethernet connector on the front panel.
In the Dual Driver configuration the Master Control Unit directly manages the Exciters, the coaxial switch and distributes the base band signal.
The extensive use of high-level Digital Signal Processing gives to marKoni unique features in the audio broadcasting world.
The native AES/EBU input module guarantees pure digital quality avoiding the conversion from an analogue source. The presence of the traditional L+R input assures as well top performances even with standard analogue audio.
The FM modulation is implemented by an innovative direct-RF synthesis algorithm with sub-Hz accuracy onto an FPGA-based digital processing core.
The result is a frequency-agile transmitter with immediate installation procedure, which allows operators to broadcast their audio content with excellent purity and maximum reliability.
marKoni transmitters can be locked to the GPS time/ frequency reference signal for exact carrier allocation and Synchro FM operation, a promising band-efficient method of operating adjacent FM transmitters on the same RF frequency, after aligning all the RF and audio parameters of the transmission.
The result is a clearly improved listener's reception in the overlapping signal area, extending the coverage to shadow areas, normally characterized by inter-channel interference.
A typical application of this iso-frequency approach is the coverage of branches of highways, allowing car radio receivers to keep tuning the same carrier while driving, without the annoying effect of black spots along the road.
(over 90% of the construction materials are recyclable).
The pure digital audio sensation that marKoni creates is obtained thanks to a revolutionary Soft Limiter, which avoids audio intermodulation peaks, while safeguarding the integrity of the whole input dynamic range, with the use of accurate signal processing that allows high full-band stereo separation and extreme signal-to-noise ratio.
The units come with a full-option outfit: analogue and digital audio, analogue MPX and additional wideband SCA and IP inputs, embedded RDS Generator and Digital Stereo Coder and Web/SNMP remote control.
SIGNAL PROCESSING SECTION
|FM Carrier generation||NCO-based synthesis|
|FM Modulation||Fully digital|
|Stereo Coder||Fully digital, integrated|
|Input Audio Limiter||Proprietary integrated Soft Limiter|
|Digital Processing Resolution||Real-time internal 32-bit digital processing|
|RDS Generator||Fully integrated|
|Monitoring Output Signals||Fully digitally generated|
Analog L/R Input Section
|L/R Analogue Inputs||30Hz - 15KHz (integrated digital stereo coder)
0dBu nominal (adjustable from -12dBu to +12dBu)
|L/R Analogue Inputs Impedance||600Ω / 10kΩ balanced/unbalanced|
Analog MPX and SCA Input Section
|Analogue MPX Input||30Hz - 100kHz 0dBu nominal|
|MPX Analogue Inputs||10 kΩ unbalanced|
|Impedance SCA1/SCA2||40 kHz - 100 kHz 2Vpp nominal for ±7.5kHz deviation|
|Inputs SCA1/SCA2 Analogue Inputs Impedance||10 kΩ unbalanced|
Digital L/R Input Section
|Digital Audio Input||AES/EBU (XLR Female), S/PDIF (BNC)|
|Balanced AES/EBU Input Impedance||110 Ω|
|Unbalanced S/PIDIF Input Impedance||75 Ω|
|Audio Input Delay (all audio inputs)||0-4 µs, step 1 µs|
|RF Output Frequency (FM / OIRT bands)||87.5MHz-108MHz step 1Hz, ±1 ppm frequency stability / OIRT on request|
|Output Level||10kW, 20kW and 40kW|
|Output Interface / Impedance||EIA 1"+5/8 Flange type (10kW), EIA 3"+1/8 Flange type (20kW), EIA 4"+1/2 Flange type (40kW)/ 50 Ohm|
|Pilot Carrier frequency||19kHz ±0.001Hz|
|Pilot Carrier level||0-12% modulation in 0.1% steps|
|Pilot Carrier Output||1Vpp digitally synthesized|
|MPX Analogue Output||OdBu from integrated digital stereo coder|
|19kHz and 38kHz Tone Suppression||< -63dB|
|THD (30Hz-15kHz)+N||< 0.1%|
|Synchronous AM||Better than -60dB|
|Asynchronous AM||Better than -70dB|
|Mono SNR RMS||Better than -85dB|
|Stereo SNR RMS||Better than -80dB|
|L/R and R/L Crosstalk||> 50dB (60dB typ.)|
|M/S and S/M Crosstalk||> 45dB full-band|
|Pilot Carrier Phase||User adjustable (step <1°)|
|Frequency Deviation Range||User adjustable 0 to ±200 kHz|
|Pre-emphasis||Flat, 50µs or 75µs|
|Physical||Case 19" - 1 x 24U (10kW), 1 x 42U (20kW), 2 x 42U (40kW)|
|Remote Control Port||RS232/RS485|
|Remote Control Options||PSTN, GSM (optional), Ethernet, SNMP|
|Front Panel User Interface||LCD full color touch screen display|
|Power Supply Voltage||High power, 400V, ±15%|
|Typical Efficiency at 98MHz||70%|
|Operating Temperature||0 - 45°C|
|-||N+1 Redundancy configurations available from 1+1 to 4+1 (expandable)|
Specifications, characteristics and front panel are subject to change without notice