Elenos Broadcast Experience

ET2000

ET2000 2KW MOSFET TRANSMITTER.

The Philips Mosfet BLF278 on its 8 RF modules are used at 250W power output in low-stress conditions. Each module is running at 90% rated power offering a better MTBF.

To reduce the harmonic current emission to the mains, the 2 AC/DC switching power supply units are equipped with PFC (Power Factor Corrector).

The current sharing between PSU’s is performed by a robust digital control that works at any RF output power level. The good matching between the PSU’s ensures a greater reliability and allows higher output power to be reached. The PSU’s are also overheating temperature and short circuit protected. MOV devices also protect the equipment from any low energy fast transients in the mains.

Highlights

ICEFET® This innovative Elenos application combines the very high yield of Mosfet with a maximum efficiency dissipator. The result is a drastic reduction of temperature and a consequent increase in MTBF, thereby allowing us to develop the smallest and lightest transmitters available on the market.
ALWAYS FUNCTIONAL Thanks to “SOFT FAILURE DESIGN”, efficient protection systems and redundancy of apparatus otherwise needed to eliminate "SINGLE-POINT-FAILURES”, Elenos transmitters are always «ON AIR» even under extreme work conditions.
IPC (Intelligent Power Control) Another exclusive Elenos application. IPC maintains constant output power within 2% of the defined value, regardless of fluctuations in supply voltage, RF piloting or charge conditions.
IPF (Intelligent Proportional Foldback) IPF is an intelligent system that varies the apparatus output power in relation to changes in charge conditions so that the transmitter can always function even under significantly variable charges.
BROAD BAND The declared technical performances of the transmitter are maintained across the entire 88-108 MHz band without the need for any kind of calibration. This means it is ideal for n+1 applications.
CONSTANT YIELD The supply voltage to Mosfet and Bias systems are both controlled to optimise yield at any frequency and output power level. This means low heating, high yield and consequent low operating costs.
NO IPA Elenos avoids using intermediate charge amplifiers to eliminate one of the redundancy bottlenecks frequently present in medium-high power transmitters.
EASY MAINTENANCE All components (RF modules, electronic control cards, fans, power supply units) are easily accessed from top and bottom sections and from front and rear panels.
SMS ALARMS/TELEMETRY Connection to a GSM modem ensures SMS notification of eventual alarms, faults and machine status. SMS also ensures inter-action with the transmitter. A remote PC can be used to maintain control and interaction of all transmitter operating parameters. The industrial standard Hostlink protocol ensures safe control of an enormous quantity of information for remote diagnostics.
WORLD-WIDE TECHNICAL SERVICE ELENOS is a producer of FM apparatus with one of largest distribution channels in the world. Every distributor is essentially chosen for the technical support it can offer to clients.

Technical Features

COMPOSED
Exciter:	ETG101
Amplifers:	E2000
Number of E3000 Amplifiers:	1
Mounted in 19" standard rack:	No

GENERAL DATA
Output Nominal Power:	2000 W adjustable
Output Low-pass Filter:	W.B. 87.5 MHz - 108 MHz
Displayed Parameters:	More than 50 parameters displayed on a LCD
Number of BLF278 MOSFETs:	8
Number of amplifiers E3000:	1
Number of power supplies:	2
Dimensions: Rack units:	4+3U
Dimensions: Width:	48,5 cm
Dimensions: Height:	(17,6+13,5cm.) Tot. 31,1 cm
Dimensions: Depth:	70 cm
Weight:	(43+22Kg.) Tot.75 Kg

CONNETTORS
RF Output connector:	7/8"

RF
RF Efficiency:	65% typ.
Output nominal power:	2000 W Adjustable with continuity
Maximum peak power:	2600 W
Power consumption:	3050 W

POWER SUPPLY
Power supply:	110/220/380 V. Threephase-singlephase 50-60Hz VAC

COOLING SYSTEM
Cooling flow (m3/h):	Variable from 400 to 800 m3/h
Air temperature increase between output /input	17 °C
Cooling system:	Forced air-cooling through 6 axial fans

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