kwlbroadcast
 
home about kwlbroadcast our products our portfolio contact us kwlbroadcast.com

KWL Broadcast is Indonesian manufacturer of FM and TV broadcasting equipment. Currently, we are covering four main areas :

  • FM transmitters
  • STL (Studio Transmiter Link)
  • TV transmitters
  • Transmitting antennas and accessories

Read More

27.09.2018
Ada beberapa Model system Modulasi di dalam Pemancar AM, Antara lain adalah :

Promo Domain...
Read More



24.07.2009
Aplikasi Lain untuk Sistem “Quadrature Amplitude Modulation”

Quadrature Amplitude Modulation (QAM) adalah encoding informasi menjadi isyarat pembawa gelombang...
Read More



news  PRODUCTS
  TV TRANSPOSER (Up-Converter/Down-Converter)



General. TV Down Converters are used to convert a Television signal to an IF Television signal. TV Up Converters are used to convert an IF Television signal to an RF Television Signal. The combination of Down Converter and Up Converter allows to obtain an excellent quality TV low power compact Transposer (up to 5Wps) suitable to be also used as exciter for higher power transmitters. TV transposers are used to transpose a modulated RF Television channel to another one in the I, III and IV/V band or vice versa.

• Multistandard. The TV Transposers are fully compatible with all the international television standards.

• Digital compatible. The TV Down converters, Up Converter and Transposers are fully compatible with analog or digital TV signals.

• Synthesized. The input/output RF channels can be easily set by an agile dip-switch selector.

• Precision IF AGC. An internal wide range IF Automatic Gain Control circuit guarantee high stability of RF output signal level.

• Linearity precorrector. An optional powerful linearity precorrector circuit allows to optimize the output modulation characteristics also when the converters/transposers are used as driver for high power amplifiers.

• Stereo/dual sound and NICAM compatible. The RF bandwidth of the IF converters/transposers allows mono, stereo, dual sound or NICAM digital audio operation.

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


  • Up - Converter Technical Specification :

  • • Input frequency : 38,9MHz ( IF Modulator Standart)
    • Input signal level : ±3 dBm at for Maximum Output Power
    • Input impedance : 50 Ω
    • Input connector : TNC (other upon request)
    • Input return loss : > 24 dB
    • Automatic Gain Control Range : 25dB to 40dB Typical
    • Output Frequencies : (Up on Request)
    - Band I – (55 - 62.75MHz)
    - Band III – (174 χ 230 MHz)
    - Band IV/V – (470-860 MHz)
    • Output impedance : 50 Ω
    • Output connector : N-Type, Female (others upon request)
    • Output return loss : > 25 dB
    • Output power (peak sync.) : 0.5Watt to 5Watt (adjustable)
    • Frequency response (Fv - 0.75 MHz / Fs + 0.25 MHz) : ± 0.5 dB
    • Intermodulation distortion (IMD-DIN 45004 –8, -16, -10 dB) : < -62dBc
    • Forward power, Reflected Power, AGC, Temperature Alarms
    • Mains power supply : 115/230 Vac ±15%, 47 to 62 Hz single phase
    • Temperature range : -5 χ 45 °C
    • Relative humidity : max. 95%
    • Weight : 10.5 Kg
    • Width : 483 mm
    • Height : 2U
    • Depth : 450 mm
    • L.O high frequency stability : +/-10Hz

  • Down Converter Technical Specification :

  • • Input Frequencies : (Up on Request)
    - Band I – (55 - 62.75MHz)
    - Band III – (174 χ 230 MHz)
    - Band IV/V – (470-860 MHz)
    • Input signal level : -60dBm ±3 dB at 100% signal
    • Input impedance : 50 Ω
    • Input connector : N-Type, Female (others upon request)
    • Input return loss : > 25 dB
    • Output impedance : 50 Ω
    • Output connector : TNC (other upon request)
    • Output frequency : 38,9MHz ( IF Modulator Standart)
    • Output return loss : > 24 dB
    • Automatic Gain Control Range : 25dB to 40dB Typical
    • Output power (peak sync.) : -7dBm to +3dBm (adjustable)
    • Frequency response (Fv - 0.75 MHz / Fs + 0.25 MHz) : ± 0.5 dB
    • Intermodulation distortion (IMD-DIN 45004 –8, -16, -10 dB) : < -62dBc
    • Forward power, Reflected Power, AGC, Temperature Alarms
    • Mains power supply : 115/230 Vac ±15%, 47 to 62 Hz single phase
    • Temperature range : -5 χ 45 °C
    • Relative humidity : max. 95%
    • Weight : 10.5 Kg
    • Width : 483 mm
    • Height : 2U
    • Depth : 450 mm
    • L.O high frequency stability : +/-10Hz

    Features and specifications subject to change without notice






    HOME | ABOUT US | PRODUCTS | PORTFOLIO | NEWS | CONTACT US
        Copyright © 2020 KWLBROADCAST