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DM Line

TV Transmitters

TV Transmitter DBTV - DBTU Series

TV Transmitters DBT Series is the latest evolution of the digital TV transmitters fully compatible with all digital TV international standards: DVB-T/H, DVB-T2, ISDB T/Tb, ATSC, DTMB and suitable for SFN (Single Frequency Network) and MFN (Multi Frequency Network) applications in VHF and, Transmitter: DBTV and UHF band, Transmitter: DBTU. TV Transmitters DBT Series is fully broadband.

Available also in Dual Cast configuration with analog TV modulation included.

trasmettitori tv dbtv dbtuHI-ADCTM technology

TV Transmitters DBT Series is realized with the new HI-ADC technology.

Using latest generation LDMOS RF devices with ultra-linear characteristics, higher performances have been obtained for digital television:

Higher modulation quality.

Higher RMS output power in digital operations compared to previous technologies.

Extremely low heating due to increased efficiency.

High safety devices from load mismatch.

TV Transmitters DBT Series High efficiency "Doherty" amplification

TV transmitter DBT Series can be equipped with high efficiency Doherty amplification, option DHT option, to increase overall efficiency over 40%.

High Quality Digital Performances

Shoulder attenuation > 38 dB.

M.E.R. > 35 dB.

Output frequency response ± 0.5 dB.

Control logic unit

A powerful control logic unit allows a complete control of the transmitter through front panel LCD display. In case of remote control option, a complete control through WEB (including Web Server) and/or SNMP is available.

Measures and alarm indications on front panel

User friendly interface with LCD display and pushbuttons for an easy setup of all parameters: 

Forward and reflected power.

Supply voltage and absorbed current of each single pallet.

Internal heat-sink temperature.

Alarm indication for VSWR, over-temperature, overdrive.

Trimmers available from the front panel to adjust the threshold of:

Overdrive protection.

VSWR protection.

Complete remote control system

TV transmitter DBT Series has an extremely complete Web server, SNMP, GSM or SMS remote control system, available as option.

Air cooling

TV Transmitters DBT Series oversized air cooling system widely extends transistor life.

The amplifier modules are equipped with external 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*,  suitable for outdoor or indoor installation, and equipped with single or double*  pump system for maximum redundancy, is the main component of the powerful liquid cooling system.
FM Transmitter PFG Series 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.

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

TV Transmitters VHF MTV Series

trasmettitori tv mtv

The MTV Series is the high quality Analog TV transmitters line in VHF band. These transmitters are designed to assure extremely high performances in analog transmission and also in digital modulation (DVB-T/T2, DVB-H, ATSC, ISDB-T/Tb, DTMB, etc…). All MTV Series transmitters can be easily upgraded for Digital transmission and/or for Dual-Cast transmission where both Analog & Digital modulations are available. This high-linearity design reduces cost of later
upgrade to digital while providing the best analog modulation quality.

HI-ADCTM technology

The MTV Series are realized with the new HI-ADC™ technology. Using latest generation LDMOS RF devices with ultra-linear characteristics, higher performances have been obtained for analog and digital television:

Higher modulation quality.

Higher RMS output power in digital operations compared to previous technologies.

Extremely low heating due to increased efficiency.

High ruggedness devices resisting to very high load mismatches (65:1).

Digital ready

The MTV Series transmitters are perfectly suitable to be used for all standard digital modulations thanks to the high linearity and performances RF design.

Frequency-agile

MTV Series transmitters are fully broadband. All RF stages ahead of the output filters can operate on any VHF channel with instantaneous settings.

Modular assembly

Easy removable interchangeable power amplifier modules and power supplies simplify the maintenance, reducing spare requirement and service costs.

Control logic unit

A powerful control logic unit allows a complete control of the transmitter through front panel LCD display. Additionally a complete remote control system through WEB (including Web Server) and/or SNMP is available as option.

Measures and Alarms Control System

User friendly interface with LCD display and pushbuttons for easy check and setup of all main parameters is present on the transmitter front. Some available measures and alarms are as follow:

Forward and reflected power.

Supply voltage and current of each RF amplifier module.

Internal heat-sink temperature.

Alarm indication for VSWR, over-temperature, overdrive.

High redundancy configurations

High on-air reliability is assured by using multiple power amplifier modules, each one with multiple internal PA's, with independent power supplies and optional dual-driver configurations.

Air cooling

The MTV 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 MTV liquid cooling

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.

Reduced maintenance

Easy accessibility of all parts, externally serviceable cooling air filters, very high MTBF for RF and power supply modules, are only some of the characteristics that explain the very high reduction of maintenance costs obtained.

High Efficiency Power Supply

The High Efficiency Switch-Mode Power Supply with Power Factor Control meets all the international requirements for mains network disturbances.

Surge and Lightning Protections (optional)

Surge and lightning protections for the transmitters are available as option to improve the durability of the equipment. Moreover, an isolation transformer can be optionally installed to increase the protection of the unit from overvoltage or spikes coming from the mains distribution.

 

AAD Technology

Prevents corrosion from air moisture and increases reliability.

Mechanical components are made in stainless steel or anticorodal aluminum.

Air is properly ducted to avoid contact with electronic parts.

All electronic boards and cablings are tropicalized with a special resin to strongly protect all circuits against salty and/or corrosive air.

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

 
AMPLIFIER MODEL (WPS) DIGITAL POWER OUTPUT DVB-T / DVB-T2 / ISDB / ISDB-Tb / T-DMB (Wrms)* DIGITAL POWER OUTPUT ATSC (Wrms)* OUTPUT CONNECTOR COOLING SYSTEM
MTV 50 (50) 16 20 N Air
MTV 100 (100) 30 40 N Air
MTV 200 (200) 60 80 N Air
MTV 350 (350) 110 130 N Air
MTV 500 (500) 200 250 N Air
MTV 700 (700) 250 350 N Air
MTV 1000 (1000) 350 500 DIN 7/16 Air
MTV 1400 (1400) 500 700 DIN 7/16 Air
MTV 2000 (2000) 700 1000 EIA 7/8" Air or Liquid
MTV 3000 (3000) 1000 1500 EIA 7/8" Air or Liquid
MTV 5500 (5500) 1400 2000 EIA 1+5/8" Air or Liquid
MTV 10000 (10000) 2500 3500 EIA 1+5/8" Air or Liquid
MTV 20000 (20000) 5000 7000 EIA 3+1/8" Air or Liquid
MTV 30000 (30000) 7500 10000 EIA 3+1/8" Air or Liquid
MTV 40000 (40000) 10000 14000 EIA 4+1/2" Air or Liquid

 

TECHNICAL SPECIFICATIONS
Operating frequency range VHF – Band I (45-90 MHz) VHF – Band III (170-230 MHz)
TV Standards B, D, I, K1, L, M, N
In/out impedance 50 Ω
Spurious and harmonic emissions (ref. to carrier) ≤ - 60 dBc
Power stability < 1%
Intermodulation (IMD-DIN 45004 -8, -16, -10 dB) < -60 dBc (typ. - 62 dBc)

 

VIDEO PARAMETERS IN ANALOG MODE
Input connector BNC, 75 Ω
Video input level 1Vpp ± 6dB adjustable
DC restoration circuit at black porch
Differential gain at nominal power < 4%
Differential phase at nominal power < ± 2°
2TK factor < 1,5%
Group delay PV 0.75/5 MHz < ± 30ns (within the video band)
In-band intermodulation (ref. to nominal power with 3 tones method Vc –5dB; Sc –10dB; Cc –17dB) < -60dB
Off-band spurious radiation < -60dB
S/N ratio (weighted) > 60dB
External reference frequency input 5 or 10MHz

 

AUDIO PARAMETERS IN ANALOG MODE
Input connector XLR
Input impedance 600 Ω balanced
Input level 6dBm ± 6dB (for ± 50kHz frequency deviation)
Pre-emphasis 50 / 75 µs
S/N ratio > 65 dB

 

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%

Analog UHF TV transmitters

trasmettitori tv analogici uhf

The MD Series is the high quality Analog TV transmitters line of DB Elettronica. These transmitters are designed to assure extremely high performances in analog transmission and also in digital modulation (DVB-T/T2, DVB-H, ATSC, ISDB-T/Tb, DTMB, etc…). All MD Series transmitters can be easily upgraded for Digital transmission and/or for Dual-Cast transmission where both Analog & Digital modulations are available. This high-linearity design reduces cost of later upgrade to digital while providing the best analog modulation quality.

HI-ADCTM technology

The MD Series are realized with the new HI-ADC™ technology. Using latest generation LDMOS RF devices with ultra-linear characteristics, higher performances have been obtained for analog and digital television:

Higher modulation quality.

Higher RMS output power in digital operations compared to previous technologies.

Extremely low heating due to increased efficiency.

High ruggedness devices resisting to very high load mismatches (65:1).

Digital ready

The MD Series transmitters are perfectly suitable to be used for all standard digital modulations thanks to the high linearity and performances RF design.

Frequency-agile

MD Series transmitters are fully broadband. All RF stages ahead of the output filters can operate on any UHF channel with instantaneous settings.

Modular assembly

Easy removable interchangeable power amplifier modules and power supplies simplify the maintenance, reducing spare requirement and service costs.

Control logic unit

A powerful control logic unit allows a complete control of the transmitter through front panel LCD display. Additionally a complete remote control system through WEB (including Web Server) and/or SNMP is available as option.

Measures and Alarms Control System

User friendly interface with LCD display and pushbuttons for easy check and setup of all main parameters is present on the transmitter front. Some available measures and alarms are as follow:

Forward and reflected power.

Supply voltage and current of each RF amplifier module.

Internal heat-sink temperature.

Alarm indication for VSWR, over-temperature, overdrive.

High redundancy configurations

High on-air reliability is assured by using multiple power amplifier modules, each one with multiple internal PA's, with independent power supplies and optional dual-driver configurations.

Air cooling

The MD 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 MD liquid cooling

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.

Reduced maintenance

Easy accessibility of all parts, externally serviceable cooling air filters, very high MTBF for RF and power supply modules, are only some of the characteristics that explain the very high reduction of maintenance costs obtained.

High Efficiency Power Supply

The High Efficiency Switch-Mode Power Supply with Power Factor Control meets all the international requirements for mains network disturbances.

Surge and Lightning Protections (optional)

Surge and lightning protections for the transmitters are available as option to improve the durability of the equipment. Moreover, an isolation transformer can be optionally installed to increase the protection of the unit from overvoltage or spikes coming from the mains distribution.

AAD Technology

Prevents corrosion from air moisture and increases reliability.

  • Mechanical components are made in stainless steel or anticorodal aluminum.
  • Air is properly ducted to avoid contact with electronic parts.
  • All electronic boards and cablings are tropicalized with a special resin to strongly protect all circuits against salty and/or corrosive air.

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

 

AMPLIFIER MODEL (WPS) DIGITAL POWER OUTPUT DVB-T / DVB-T2 / ISDB / ISDB-Tb / T-DMB (Wrms)* DIGITAL POWER OUTPUT ATSC (Wrms)* OUTPUT CONNECTOR COOLING SYSTEM
MD 50 (50) 16 20 N Air
MD 100 (100) 30 40 N Air
MD 200 (200) 60 80 N Air
MD 350 (350) 110 130 N Air
MD 500 (500) 200 250 N Air
MD 700 (700) 250 350 N Air
MD 1000 (1000) 350 500 DIN 7/16 Air
MD 1400 (1400) 500 750 DIN 7/16 Air
MD 2000 (2000) 700 1000 EIA 7/8" Air or Liquid
MD 3000 (3000) 1000 1500 EIA 7/8" Air or Liquid
MD 5500 (5500) 1400 2000 EIA 1+5/8 Air or Liquid
MD 10000 (10000) 2500 3500 EIA 1+5/8" Air or Liquid
MD 20000 (20000) 5000 7000 EIA 3+1/8" Air or Liquid
MD 30000 (30000) 7500 10000 EIA 3+1/8" Air or Liquid
MD 40000 (40000) 10000 14000 EIA 4+1/2" Air or Liquid

 

TECHNICAL SPECIFICATIONS  
Operating frequency range UHF – Band IV & V (470-860MHz)
TV Standards B, G, D, K, M, N, I
In/out impedance 50 Ω
Spurious and harmonic emissions (ref. to carrier) ≤ - 60 dBc
Power stability < 1%
Intermodulation (IMD-DIN 45004 -8, -16, -10 dB) < -60 dBc (typ. - 62 dBc)

 

VIDEO PARAMETERS IN ANALOG MODE  
Input connector BNC, 75 Ω
Video input level 1Vpp ± 6dB adjustable
DC restoration circuit at black porch
Differential gain at nominal power < 4%
Differential phase at nominal power < ± 2°
2TK factor < 1,5%
Group delay PV 0.75/5 MHz < ± 30ns (within the video band)
In-band intermodulation (ref. to nominal power with 3 tones method Vc –5dB; Sc –10dB; Cc –17dB) < -60dB
Off-band spurious radiation < -60dB
S/N ratio (weighted) > 60dB
External reference frequency input 5 or 10MHz

 

AUDIO PARAMETERS IN ANALOG MODE  
Input connector XLR
Input impedance 600 Ω balanced
Input level 6dBm ± 6dB (for ± 50kHz frequency deviation)
Pre-emphasis 50 / 75 µs
S/N ratio > 65 dB

 

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%

 


CTX TV Exciters

eccitatori tv analogici ctx

The CTX Analog TV Multistandard Exciter has top class performances in Analog TV modulation to be perfectly used as a stand alone low power compact transmitter or as an exciter for higher power analog TV transmitters.

Graphic LCD Control
All CTX exciters are equipped with a powerful Graphic LCD Control system. Front panel instant frequency programmability, RF power settings, audio settings, deviation controls, alarms status are only some of the main facilities available in the graphic display.

5-10-20 Wps
The CTX exciters are available with 5-10-20 Wps maximum output power. The output RF level is continuously adjustable from 0 to full nominal power simply using the LCD front control panel.

High frequency stability
High frequency stability in short and long terms is assured by Digital Phase Locked Loop circuits with extremely low drift oscillators.

Precision Offset
Precision offset facility down to 1 Hz in the CTX exciter using the DDS technology is available as option. Offset setting available from front panel LCD graphic display.

Ultra High Performance Precorrector
Ultra High Performance Precorrector with quadrature (I/Q) corrections and 12 specific non-linearity adjustments to easily optimize intermodulations and proper sync level. White-Gray-Black-Sync. very high performances precorrection to be able to get perfect modulation also with class AB non linear high power amplifiers.

Dual-Cast Ready and Digital Ready
The CTX exciter is suitable to work in dual cast systems thanks to its internal ADC switching system with possibility to integrate external digital modulation units with direct front panel management.

Electronic protections
The CTX exciters are automatically protected in case of load mismatching (VSWR) or transmitting frequency error (Unlocked oscillator) or over temperature. Every alarm event is displayed by front panel ALARM led for immediate indication: more details on the occurred alarm are available in the LCD graphic front panel display or remotely (Remote Control option).

Output band pass filter (optional)
When CTX exciters are used as stand alone TV transmitters an highly selective output channel filter is needed. It assures a pure RF spectrum, according to the all international standards and requirements.This filter is available as option.

Power supply
High efficiency switching mode power supply gives greater reliability and reduces the power consumption.

 

TECNICAL SPECIFICATIONS
Operating frequency range VHF – Band I (40-90MHz) VHF – Band III (174-240MHz) UHF – Band IV & V (470-860MHz)
TV Standards B, G, D, K, M, N, I
Frequency setting 1 Hz step

 

VIDEO PARAMETERS
Input connectors BNC, 75 Ω
Input return loss > 35dB (0,25 ÷ 6MHz)
Video input level 1Vpp ± 6dB adjustable
DC restoration circuit at black porch
Amplitude / frequency response ± 0,5dB (within the video band)
Differential gain at nominal power < 4%
Differential phase at nominal power < ± 2°
2TK factor < 1,5%
Group delay PV 0.75/5 MHz < ± 30ns (within the video band)
Sync pulse compression at nominal power < 3%
In-band intermodulation (ref. to nominal power with 3 tones method Vc –5dB; Sc –10dB; Cc –17dB) < -60dB
Off-band spurious radiation < -60dB
S/N ratio (weighted) > 60dB
External reference frequency input 5 or 10MHz
Local oscillator stability (0 – 50 °C) < 2.5 ppm/year
(with optional high stability) < 0.5 ppm/year
L.O. frequency resolution 50kHz steps (standard version) 1Hz steps (with DDS precision offset option)

 

AUDIO PARAMETERS
Input connector XLR
Input impedance 600 Ω balanced
Input level 6dBm ± 6dB (for ± 50kHz frequency deviation)
Modulation FM (F3) with maximum deviation ±50kHz
Pre-emphasis 50 / 75 µs
Amplitude / frequency response ± 0,5dB (30Hz ± 15kHz )
Harmonic distortion < 0,1% (30Hz ÷ 15kHz by ± 50kHz deviation)
Intermodulation D2< 0,3%, D3 < 0,5% between 15kHz and 100kHz at ± 50kHz total deviation
S/N ratio > 65 dB
Separation between channels > 75 dB
Common mode rejection ratio of audio inputs (balanced mode) > 56 dB

 

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%

 


Analog TV Amplifiers KBV

amplificatori tv analogici kbv

VHF Analog TV amplifiers KBV Series is the high quality line. These amplifiers are designed to assure extremely high performances in analog transmission and also in digital modulation (DVB-T/T2, DVB-H, ATSC, ISDB-T/Tb, DTMB, etc…). 

HI-ADCTM technology

The KBV Series are realized with the new HI-ADC™ technology. Using latest generation LDMOS RF devices with ultra-linear characteristics, higher performances have been obtained for analog and digital television:

Higher modulation quality.

Higher RMS output power in digital operations compared to previous technologies.

Extremely low heating due to increased efficiency.

High ruggedness devices resisting to very high load mismatches (65:1).

Digital ready

The KBV Series amplifiers are perfectly suitable to be used for all standard digital modulations thanks to the high linearity and performances RF design.

Modular assembly

Easy removable interchangeable power amplifier modules and power supplies simplify the maintenance, reducing spare requirement and service costs.

Measures and Alarms Control System

User friendly interface with LCD display and pushbuttons for easy check and setup of all main parameters is present on the transmitter front. Some available measures and alarms are as follow:

Forward and reflected power.

Supply voltage and current of each RF amplifier module.

Internal heat-sink temperature.

Alarm indication for VSWR, over-temperature, overdrive. 

High redundancy configurations

High on-air reliability is assured by using multiple power amplifier modules, each one with multiple internal PA's, with independent power supplies and optional dual-driver configurations.

Air cooling

The KBI/KBV 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 KBV liquid cooling

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.

Reduced maintenance

Easy accessibility of all parts, externally serviceable cooling air filters, very high MTBF for RF and power supply modules, are only some of the characteristics that explain the very high reduction of maintenance costs obtained.

High Efficiency Power Supply

The High Efficiency Switch-Mode Power Supply with Power Factor Control meets all the international requirements for mains network disturbances.

Surge and Lightning Protections (optional)

Surge and lightning protections for the amplifiers are available as option to improve the durability of the equipment. Moreover, an isolation transformer can be optionally installed to increase the protection of the unit from overvoltage or spikes coming from the mains distribution.

AAD Technology

Prevents corrosion from air moisture and increases reliability.

Mechanical components are made in stainless steel or anticorodal aluminum.

Air is properly ducted to avoid contact with electronic parts.

All electronic boards and cablings are tropicalized with a special resin to strongly protect all circuits against salty and/or corrosive air.

 

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

 

 

AMPLIFIER MODEL (WPS) DIGITAL POWER OUTPUT DVB-T / DVB-T2 / ISDB / ISDB-Tb / T-DMB (Wrms)* DIGITAL POWER OUTPUT ATSC (Wrms)* OUTPUT CONNECTOR COOLING SYSTEM
KBV 50 (50) 16 20 N Air
KBV 100 (100) 30 40 N Air
KBV 200 (200) 60 80 N Air
KBV 350 (350) 110 130 N Air
KBV 500 (500) 200 250 N Air
KBV 700 (700) 250 350 N Air
KBV 1000 (1000) 350 500 DIN 7/16 Air
KBV 1400 (1400) 500 750 DIN 7/16 Air
KBV 2000 (2000) 700 1000 EIA 7/8" Air or Liquid
KBV 3000 (3000) 1000 1500 EIA 7/8" Air or Liquid
KBV 5500 (5500) 1400 2000 EIA 1+5/8 Air or Liquid
KBV 10000 (10000) 2500 3500 EIA 1+5/8" Air or Liquid
KBV 20000 (20000) 5000 7000 EIA 3+1/8 Air or Liquid
KBV 30000 (30000) 7500 10000 EIA 3+1/8" Air or Liquid
KBV 40000 (40000) 10000 14000 EIA 4+1/2" Air or Liquid

 

TECHNICAL SPECIFICATIONS
Operating frequency range VHF – Band I (45-90MHz) VHF - Band III (170-230 MHz)
TV Standards B, D, I, K1, L, M, N
In/out impedance 50 Ω
Input connector N (others on request)
Power stability < 1%

 

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%

 


TV amplifiers KD

amplificatori tv kd

The KD Series is the high quality UHF Analog TV amplifiers line. These amplifiers are designed to assure extremely high performances in analog transmission and also in digital modulation (DVB-T/T2, DVB-H, ATSC, ISDB-T/Tb, DTMB, etc…).  

HI-ADCTM technology

The KD Series are realized with the new HI-ADC™ technology. Using latest generation LDMOS RF devices with ultra-linear characteristics, higher performances have been obtained for analog and digital television:

Higher modulation quality.

Higher RMS output power in digital operations compared to previous technologies.

Extremely low heating due to increased efficiency.

High ruggedness devices resisting to very high load mismatches (65:1).

Digital ready

The KD Series amplifiers are perfectly suitable to be used for all standard digital modulations thanks to the high linearity and performances RF design.

Modular assembly

Easy removable interchangeable power amplifier modules and power supplies simplify the maintenance, reducing spare requirement and service costs.

Measures and Alarms Control System

User friendly interface with LCD display and pushbuttons for easy check and setup of all main parameters is present on the transmitter front. Some available measures and alarms are as follow:

Forward and reflected power.

Supply voltage and current of each RF amplifier module.

Internal heat-sink temperature.

Alarm indication for VSWR, over-temperature, overdrive.

High redundancy configurations

High on-air reliability is assured by using multiple power amplifier modules, each one with multiple internal PA's, with independent power supplies and optional dual-driver configurations.

Air cooling

The KD 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 KD liquid cooling

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.

Reduced maintenance

Easy accessibility of all parts, externally serviceable cooling air filters, very high MTBF for RF and power supply modules, are only some of the characteristics that explain the very high reduction of maintenance costs obtained.

High Efficiency Power Supply

The High Efficiency Switch-Mode Power Supply with Power Factor Control meets all the international requirements for mains network disturbances.

Surge and Lightning Protections (optional)

Surge and lightning protections for the amplifiers are available as option to improve the durability of the equipment. Moreover, an isolation transformer can be optionally installed to increase the protection of the unit from overvoltage or spikes coming from the mains distribution.

AAD Technology

Prevents corrosion from air moisture and increases reliability.

Mechanical components are made in stainless steel or anticorodal aluminum.

Air is properly ducted to avoid contact with electronic parts.

All electronic boards and cablings are tropicalized with a special resin to strongly protect all circuits against salty and/or corrosive air.

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

 

AMPLIFIER MODEL (WPS) DIGITAL POWER OUTPUT DVB-T / DVB-T2 / ISDB / ISDB-Tb / T-DMB (Wrms)* DIGITAL POWER OUTPUT ATSC (Wrms)* OUTPUT CONNECTOR COOLING SYSTEM
KD 50 (50) 16 20 N Air
KD 100 (100) 30 40 N Air
KD 200 (200) 60 80 N Air
KD 350 (350) 110 130 N Air
KD 500 (500) 200 250 N Air
KD 700 (700) 250 350 N Air
KD 1000 (1000) 350 500 DIN 7/16 Air
KD 1400 (1400) 500 750 DIN 7/16 Air
KD 2000 (2000) 700 1000 EIA 7/8" Air or Liquid
KD 3000 (3000) 1000 1500 EIA 7/8" Air or Liquid
KD 5500 (5500) 1400 2000 EIA 1+5/8" Air or Liquid
KD 10000 (10000) 2500 3500 EIA 1+5/8" Air or Liquid
KD 20000 (20000) 5000 7000 EIA 3+1/8" Air or Liquid
KD 30000 (30000) 7500 10000 EIA 3+1/8" Air or Liquid
KD 40000 (40000) 10000 14000 EIA 4+1/2" Air or Liquid

 

TECHNICAL SPECIFICATIONS
Operating frequency range UHF – Band IV & V (470-860MHz)
TV Standards B, G, D, K, M, N, I
In/out impedance 50 Ω
Input connector N (others on request)
Power stability < 1%

 

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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ADDRESS

Via Degli Orti, 1 | 40050 Funo di Argelato | BOLOGNA | ITALY

CALL US

tel. +39 051 817657

WRITE TO

info@dmbroadcast.it

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