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FM Modular Transmitter PFG NEXT

Ultra-high efficiency line in FM Broadcasting industry with hot swappable PSU

MAIN CHARACTERISTICS:

  • The GREEN RF™ technology, combined with new 65:1 device, is the latest evolution of the world-famous patented COLD-FET™ technology applied on DB’s transmitters.

  • Ultra high RF efficiency (>70%):

  • Hot Swappable Power Supply Units: It makes easier the serviceability and the maintenance. Their tool-less and instant installation from front panel make the PFG NEXT transmitters ideal for critical environment systems where no down time can be tolerated.

  • Automatic Current Sharing (ACS): the automatic current balancing system is present on each unit to grant a perfect load distribution and very best power supply operating conditions.

  • Versatile configuration, high redundancy: different configurations are available for model and number of power supply units installed. They grant the redundancy and a versatile configuration for a very high efficient operation in each condition.

  • Hot Plug Version: all PFG NEXT transmitters over 5 kW can be equipped optionally with the hot plug system to instantly extract the amplifier modules with transmitter in full power.

  • Low maintenance costs: thanks to the easy access to all components, external cooling air filters, very high MTBF for RF and power supply modules.

  • High frequency stability in short and long terms assured by Digital Phase Locked Loop circuit with low drift VCTCXO.

  • Complete WEB SERVER SNMP remote control, available as an option.

  • Frequency agile broadband: settable directly from the LCD front panel with 10 KHz steps without needing any tuning tools.

  • Maximum security: Meets or exceeds all the international safety standards as the electrical specifications.

HIGHLIGHTS:

  • MSE™ (Magnetic Sound Enhancer): a magnetic barrier that protects the VCO, the heart of FM modulator, and increases the sound quality.

  • Switch-mode power supply with power factor control. Highly efficient and widely over-rated power supply modules insure low heating, low AC power consumption and superior reliability. The power factor control circuitry meets the international requirements for mains network disturbances.

  • Intelligent protection system: it reduces the output power without on-air interruption, keeping the RF devices always within the safe operating parameter.

  • AAD™ technology: it prevents corrosion from air moisture and increases reliability.

  • High efficiency cooling system. Thanks to the air-cooling system, the heat-sink temperature can rise only about 10°C above ambient temperature. This guarantees the proper functioning even in sites with extreme climate conditions and high temperature.

MODELOUTPUT POWER (W)OUTPUT CONNECTORRACK UNITRACK SUPPLIED
PFG NEXT 10001000 WDIN 7/16”​19” x 3UNo rack
PFG NEXT 20002000 WEIA ​7/8”​19” x 4UNo rack
PFG NEXT 30003000 WEIA ​7/8”​19” x 4UNo rack
PFG NEXT 35003500 WEIA ​7/8”​19” x 4UNo rack
PFG NEXT 6000/1x 6000 WEIA ​7/8”​19” x 4UNo rack
PFG NEXT 6000/2x 6000 WEIA ​7/8”​19” x 19U​19” x 19U
PFG NEXT 7000/1x 7000 WEIA ​1+5/8”19” x 5UNo rack
PFG NEXT 7000/2x 7000 WEIA ​1+5/8”​19” x 19U​19” x 19U
PFG NEXT 10000/2x 10 kWEIA ​1+5/8”19” x 24U19” x 24U
PFG NEXT 10000/4x 10 kWEIA ​1+5/8”19” x 34U19” x 34U
PFG NEXT 12000/2x 12000 WEIA ​1+5/8”19” x 24U19” x 24U
PFG NEXT 12000/4x 12000 WEIA ​1+5/8”19” x 34U19” x 34U
PFG NEXT 1500015 kWEIA 3+1/8”19” x 34U19” x 34U
PFG NEXT 2000020 kWEIA 3+1/8”19” x 34U19” x 34U
PFG NEXT 2500025 kWEIA 3+1/8”19” x 34U19” x 34U
PFG NEXT 3000030 kWEIA 3+1/8”2 rks 19” x 41U2 rks 19” x 41U
PFG NEXT 4000040 kWEIA 4+1/2”2 rks 19” x 41U2 rks 19” x 41U

EFFICIENCY ENHANCEMENT

FM Transmitter PFG Series design was optimized to get minimum losses of the passive elements and excellent performances of the active elements to increase the AC efficiency up to more than 70%.

GENERAL 
Frequency range87.5 to 108 MHz adjustable with 10kHz step
Output impedance50 Ω
Deviation capability±75 kHz, up to ±200 kHz with distortion < 0.5%
Pre-emphasis0, 25, 50, 75 us (selectable)
Synchronous AM(ref. 100% mod.) < - 58 dB
Asynchronous AM(ref. 100% mod.) < - 50 dB
RF Probe-50 dBc, 50 Ω, BNC
Power stability< 2% (ALC)
DC to RF efficiency83% typ
Modulation monitoringBNC connector
Pilot tonehase and Amplitude adjustable from display and WEB interface
Log fileUp to 200 dated events memorized in the transmitter memory, accessible from display and WEB interface

AUDIO INPUTS
Modulating input signalMono, Stereo (Left, Right, Left + Right), Encoded stereo (MPX), SCA, RDS, AUX, Digital AES/EBU
Input connectorsLeft (XLR connector), Right (XLR connector), MPX (BNC connector), SCA (BNC connector), RDS (BNC connector), AUX (BNC connector), AES/EBU (XLR connector)

AUDIO INPUT LEVELS FOR ± 75 KHZ DEVIATION
MonoAdjustable from -9 to +18 dBu
StereoAdjustable from -9 to +18 dBu
MPXAdjustable from -6 to +6 dBu or from +6 to +18 dBu (selectable at order)
AES/EBUAdjustable from -15 to 0 dBFS
Input sensitivity adjustmentWith 0,05dB steps by front panel display interface or by WEB interface
LimiterIt can be enabled/disabled and adjusted from 30 kHz to 180 kHz by front panel display and WEB interface Internal RDS coder
Synchronizedwith the 19kHz pilot of the internal stereo coder or the 19kHz pilot of an external MPX signal

AC POWER REQUIREMENTS
AC supply voltage115 / 230 VAC ± 15%, single-phase or 230/380 VAC ± 15%, three-phases
AC supply frequency50 Hz or 60 Hz, ±5%
Power factor> 0.9

ENVIRONMENT 
CoolingForced air with built-in axial fans / Liquid cooling (optional)
ServiceContinuous 24/24h
Operating temperature-5°C to +45°C Derate 3°C per 500 m above 2000 mt asl
Relative humidityUp to 95%
 

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