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DM Line

Radio Transmitters

 

Digital FM Transmitter | Mozart DDS

trasmettitore fm mozart dds

MAIN FEATURES:

Digital FM Transmitter Mozart DDS. Superior audio quality and sound pureness thanks to the Direct Digital technology

Suitable for SFN networks application, with internal modulation phase adjustment to optimize SFN network setting.

The highest AC efficiency, reaching over 70% for power over 1 kW, obtained by GREEN RF™ technology.

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

Reduction of transport costs and simplified logistics thanks to its compact design and low weight.

Highest frequency stability due to Direct Digital technology

Complete WEB SERVER or SNMP Remote Control*.

Frequency Agile. Broadband with 1 KHz step, set by software via LCD front panel display or via remote control without any tuning needing.

Uninterrupted service thanks to an intelligent protection system that reduces the output power without on-air interruption, keeping the RF

devices always within the safe operating parameters in case of:

  • Load mismatching
  • Environmental over-temperature
  • Cooling failure
  • Amplifier breakdown


Compact FM Transmitter Mozart Series

Compact Mozart FM transmitters, exciter and transmitter, are the latest audio excellence in FM Broadcasting industry with revolutionary Audio and RF technologies.

trasmettitore fm mozart compatti

MAIN FEATURES:

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

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

Compact design and low weight to reduce transportation costs and simplify logistics.

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

FM transmitter Complete WEB SERVER SNMP, GSM or SMS remote control, available as option.

FM transmitter Complete remote management via WiFi with WiFi Touch, available as option.

FM transmitter External reference oscillator, available as option: 10 MHz.

Frequency Agile Broadband, settable directly from the LCD front panel with 10 KHz steps without need for tuning tools.

Meets or exceeds all international standards for safety and electrical specifications.

 

MODEL OUTPUT POWER (W) DIMENSIONS
Mozart 30 30 19"x1U
Mozart 50 50 19"x1U
Mozart 100 100 19"x2U
Mozart 300 300 19"x2U
Mozart 500 500 19"x2U
Mozart 1000 1000 19"x2U
Mozart 2000 2000 19"x3U
Mozart 3000 3000 19"x3U

 

GENERAL
Frequency Range 87.5 to 108 Mhz adjustable with 10Khz step
Output impedance 50 Ω
Output connectors N from 30W up to 500W
  DIN 7/16 for 1kW
  EIA 7/8" for 2kW and 3kW
Deviation capability ±75 kHz, up to ±200 kHz with distortion < 0.5%
Short term stability ± 1 ppm from -5 to +45 °C
RF harmonics Exceeds CCIR/FCC requirements
RF spurious Exceeds CCIR/FCC requirements
Pre-emphasis 0, 25, 50, 75 us (selectable)
Modulation monitoring BNC connector
Pilot tone Phase and Amplitude adjustable from display and WEB interface
Log file Up to 200 dated events saved in the transmitter memory, accessible from display and WEB interface

 

AUDIO INPUTS
Modulating input signal Mono, Stereo (Left, Right, Left + Right), Encoded stereo (MPX), SCA, RDS, AUX, Digital AES/EBU
Input sensitivity adjustment With 0,05dB steps by front panel display interface or by WEB interface
Limiter It can be enabled/disabled and adjusted from 30 kHz to 180 kHz by front panel display and WEB interface
Internal RDS coder Synchronized with the 19kHz pilot of the internal stereo coder or the 19kHz pilot of an external MPX signal

 

MONO
Audio input levels for +/- 75 kHz deviation Adjustable from -9 to +18 dBu
Audio response ±0.3 dB (30 Hz to 15 kHz) Synchronized with the 19kHz pilot of the internal stereo coder or the 19kHz pilot of an external MPX signal
THD+N on encoded channels < 0.06% ( typ. 0.03% ) (30 Hz to 15 kHz)
Audio Impedance 600Ω Balanced
Audio connector XLR

 

STEREO
Audio input levels for +/- 75 kHz deviation Adjustable from -9 to +18 dBu
Audio response ±0.3 dB (30 Hz to 15 kHz)
THD+N on encoded channels < 0.03% (30 Hz to 15 kHz)
Audio Impedance 10 kΩ Unbalanced or 600Ω Balanced
Audio connector XLR (Left & Right)

 

MPX (EXTERNAL CODER)
Audio input levels for +/- 75 kHz deviation Adjustable from -6 to +6 dBu or from +6 to +18 dBu (selectable at order)
THD+N on encoded channels < 0.03% (30 Hz to 100 kHz)
Audio Impedance > 5 kΩ Unbalanced
Audio connector BNC

 

RDS/SCA/AUX
Audio input levels for +/- 75 kHz deviation Adjustable from -19.5 to +7.5 dBu
Audio Impedance 2 kΩ (others on request) Unbalanced
Audio connector BNC

 

AES/EBU
Audio input levels for +/- 75 kHz deviation Adjustable from -15 to 0 dBFS
Audio Impedance 110 Ω
Audio connector XLR

 

AC POWER REQUIREMENTS
AC supply voltage 115 / 230 VAC ± 15%, single-phase
AC supply frequency 50 Hz or 60 Hz, ±5%
Power factor > 0.9

 

ENVIRONMENT
Cooling Forced air
Service Continuous 24/24h
Operating temperature -5°C to +45°C Derate 3°C per 500 m above 2000 mt asl
Relative humidity Up to 95%

Modular FM Transmitters

FM Transmitters PFG Series is a range of modular FM transmitters designed to operate in the whole 87.5 – 108 MHz frequency range for FM radio broadcasting, with power range 100W - 40kW.

trasmettitore fm modulare

MAIN FEATURES:

Each FM Transmitter PFG Series includes the following elements:

  • Exciter.
  • Amplifier.
  • Control logic unit.
  • External cooling unit, in case of liquid cooling system.

 

MODEL OUTPUT POWER OUTPUT CONNECTOR UNIT\RACK SUPPLIED RACK
         
PFG 100 100 W N 19" x 3U No rack
PFG 300 300 W N 19" x 3U No rack
PFG 500 500 W N 19" x 3U No rack
PFG 1k 1000 W DIN 7/16 19" x 3U No rack
PFG 2k 2000 W EIA 7/8" 19" x 4U No rack
PFG 3k 3000 W EIA 7/8 19" x 4U No rack
PFG 6k/1x 6000 W EIA 7/8" 19" x 5U No rack
PFG 6k/2x 6000 W EIA 1+5/8" 19" x 19U 19" x 19U
PFG 8k 8000 W EIA 1+5/8" 19" x 24U 19" x 24U
PFG 10k/2x 10 kW EIA 1+5/8" 19" x 31U 19" x 31U
PFG 10k/4x 10 kW EIA 1+5/8" 19" x 31U 19" x 31U
PFG 15k 15 kW EIA 3+1/8" 19" x 41U 19" x 41U
PFG 20k 20 kW EIA 3+1/8" 19" x 45U 19" x 45U
PFG 30k 30 kW EIA 3+1/8" 2 racks of 19" x 41U 2 racks of 19" x 41U
PFG 40k 40 kW EIA 4+1/2" 2 racks of 19" x 45U 2 racks of 19" x 45U

 

GENERAL
Frequency range 87.5 to 108 MHz adjustable with 10kHz step
Output impedance 50 Ω
Deviation capability ±75 kHz, up to ±200 kHz with distortion < 0.5%
Pre-emphasis 0, 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 efficiency 83% typ.
Modulation monitoring BNC connector
Pilot tone Phase and Amplitude adjustable from display and WEB interface
Log file Up to 200 dated events memorized in the transmitter memory, accessible from display and WEB interface

 

AUDIO INPUTS
Modulating input signal Mono, Stereo (Left, Right, Left + Right), Encoded stereo (MPX), SCA, RDS, AUX, Digital AES/EBU
Input connectors Left (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
 
   
Mono Adjustable from -9 to +18 dBu
Stereo Adjustable from -9 to +18 dBu
MPX Adjustable from -6 to +6 dBu or from +6 to +18 dBu (selectable at order)
AES/EBU Adjustable from -15 to 0 dBFS
Input sensitivity adjustment With 0,05dB steps by front panel display interface or by WEB interface
Limiter It can be enabled/disabled and adjusted from 30 kHz to 180 kHz by front panel display and WEB interface
Internal RDS coder Synchronized with the 19kHz pilot of the internal stereo coder or the 19kHz pilot of an external MPX signal

 

AC POWER REQUIREMENTS
AC supply voltage 115 / 230 VAC ± 15%, single-phase or 230/380 VAC ± 15%, three-phases
AC supply frequency 50 Hz or 60 Hz, ±5%
Power factor > 0.9

 

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

FM Amplifier KFG Series

FM amplifiers KFG series is designed to operate in the whole 87.5 – 108 MHz frequency range for FM radio broadcasting.Power range from 100W to 40kW.

trasmettitore fm kfg

MAIN FEATURES

GREEN RF™ technology
The GREEN RF™ technology, combined with the new 65:1 devices, is the latest evolution of the world-famous patented COLD-FET™ technology. The main advantages are:

  • High RF efficiency (>70%).
  • Higher safety.
  • Higher reliability.
  • Lower heating.
  • Lower AC power consumption.
     

Hot-Plug Solution (optional)
All FM amplifiers KFG series over 5kW can be equipped optionally with the hotplug system to instantly extract the amplifier modules with amplifier in full power. All the amplifier modules slide on telescopic rails and can be completely extracted and removed for on-air maintenance or replacement without disconnecting any cable and without interrupting the transmitter operation.

Uninterrupted service
An intelligent protection circuit reduces the output power without on-air interruption, keeping the RF devices always within the safe operating parameters in case of:

  • Load mismatching.
  • Environmental over-temperature.
  • Cooling failure.
  • Failure in one or more amplification modules.
  • Failure in power supply modules.

High efficiency cooling system

The air cooling system limits the heat-sink temperature rise to only about 10°C above ambient temperature. This guarantees the properly functioning even at high temperatures and in sites with extreme climate conditions.

Air cooling
FM amplifiers KFG series oversized air cooling system widely extends transistor life. The amplifier modules are equipped with externally mounted redundant fans to allow easy and fast cleaning, or eventual replacement, without opening or removing any module and without
interrupting the transmitter operation.

Liquid Cooling
An oversize heat exchanger, single or double (optional), suitable for outdoor or indoor installation, and equipped with single or double (optional) pump system for maximum redundancy, is the main component of the powerful liquid cooling system. DB liquid cooling
system assures high reliability, cooling efficiency and easy installation, thanks to the special design of liquid cooled heat-sinks inside the amplifier and low pressure liquid distribution. This system is designed to successfully face every hard climate condition.

Advantages of liquid cooling PFG
Substantial advantages of our liquid cooling technology compared to air cooling are:

  • Properly working even with hard climate conditions.
  • Dramatically reduction of air conditioning needing.
  • Correct functioning in dusty environment even with high humidity or salinity.
  • Very low acoustic noise.
  • Low heat radiation into the environment.
  • Longer life for transistors and active elements due to colder continuous operation.

AAD Technology

  • Prevents corrosion from air moisture and increases reliability
  • Components are made in anticorodal aluminum.
  • Air is ducted to avoid contact with electronic parts.
  • All electronic boards and cablings are tropicalized with a special resin to protect the circuits against salt air.

 

MODEL POWER OUTPUT OUTPUT CONNECTOR UNIT\ EMPLOYED RACKS RACK SUPPLIED
KFG 100 100 W N 19" x 2U No rack
KFG 300 300 W N 19" x 2U No rack
KFG 500 500 W N 19" x 2U No rack
KFG 1k 1000 W DIN 7/16 19" x 2U No rack
KFG 2k 2000 W EIA 7/8" 19" x 3U No rack
KFG 3k 3000 W EIA 7/8" 19" x 3U No rack
KFG 6k/1x 6000 W EIA 7/8" 19" x 4U No rack
KFG 6k/2x 6000 W EIA 1+5/8" 19" x 19U 19" x 19U
KFG 8k 8000 W EIA 1+5/8" 19" x 24U 19" x 24U
KFG 10k/2x 10 kW EIA 1+5/8" 19" x 31U 19" x 31U
KFG 10k/4x 10 kW EIA 1+5/8" 19" x 31U 19" x 31U
KFG 15k 15 kW EIA 3+1/8" 19" x 41U 19" x 41U
KFG 20k 20 kW EIA 3+1/8 19 19
KFG 30k 30 kW EIA 3+1/8" 2 racks of 19" x 41U 2 racks of 19" x 41U
KFG 40k 40 kW EIA 4+1/2" 2 racks of 19" x 45U 2 racks of 19" x 45U

 

GENERAL
Frequency range 87.5 to 108 MHz adjustable with 10kHz step
Output impedance 50 Ω
Spurious and harmonic suppression Exceeds CCIR/FCC requirements
RF Probe 50 Ω, BNC
Power stability < 2% (ALC)
DC to RF efficiency 83% typ.

 

AC POWER REQUIREMENTS
AC supply voltage 115 / 230 VAC ± 15%, single-phase or 230/380 VAC ± 15%, three-phases
AC supply frequency 50 Hz or 60 Hz, ±5%
Power factor > 0.9

 

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

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