Optical Remote Antenna


Optical Remote Antenna

Optical Remote Antenna

Optical Remote Antenna


Optical remote antenna has been commercialized through joint development with NHK and NHK ITEC Inc.
The receiver modulate and transmit non-modulated light sent from a transmitting station to a duplex TV relay station by using radio waves being received. It is epoch-making radio-wave receiver-transmitters where highly sensitive optical modulators are used.
Optical fibers are used as transmission lines. They eliminate the use of power supplies for the receiving stations, and electrically isolates the transmitting stations from the receiving stations. It brings a substantial benefit in preventing the occurrence of damage due to lightning. Use of passive circuits only in the receiving station improves reliability and serviceability.


· No need to supply power for the receiving station in a duplex TV relay station

· Reduce risk of damages caused by lightning

· Significant reduction in maintenance work for receiving stations


· Radio-wave transmission systems in FM, VHF and UHF bands





Standard Specifications

Transmission Frequency

Specify one or two channels between channels 1 to12 and channels 13 to 62.

Transmission Distance

2,000m (maximum)

Fibers Used

Single mode

Optical Wavelength

Bandwidth : 1.3μm

Light Source and
Optoelectronic Section

Light source

LD-excited YAG laser

Rated Level of Output Optical Signals


Optical Connector

FC/PC connector

RF Output Level

60dBm ±20 (variable by 10dB)

RF Output Impedance


CN Ratio VHF Band

Over 50dB
(Receiver RF input level: 60dB μV, Measurement frequency band: 6MHz)

CN Ratio UHF Band

Over 50dB
(Receiver RF input level: 65dB μV, Measurement frequency band: 6MHz)





Supervisory Signal Detection

Make contact

Operating Temperature Range

Operational temperature range where performance is guaranteed
-10 to +45 °C (working temperature range)

Power Supply

AC 100V, 50/60Hz, 130W (room temperature)


Body: 149(H) x 480(W) x 350(D)mm
Fan unit: 49(H) x 480(W) x 350(D)mm (full projections excluded)


Body: approx. 10kg, Fan unit: approx. 2kg

Receiving Sensor

Optical Connector

FC/PC connector

RF Input Level


RF Input Impedance

50 (N-J connector)


49 (H) x 480 (W) x 250 (D)mm (full projection excluded)


Approx. 4kg




  • 地址:杭州市滨江区滨康路526号
  • 邮编:310052
  • 电话:0571-8777-4097或4098
  • 传真:0571-8777-4099