AFB-250 : Dual Rx Antenna Fiber Box

AFB-250 is designed to modulate radio signals from two receiving antenna to one optical Neutrik Duo APC output. Any passive or active antenna can be plugged in as it provides DC feed. DC feed are protected from short-circuits. A RF peak led indicate if RF field is too strong. A built-in 10dB RF attenuator can be activated on start up of device. With its rugged housing and 12V on XLR4 power, it is designed for location or live market.

Use AFB-250 with following products: AFR-200, ACH-642 and ACH862.

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Advantages of fiber optic:

  • low loss, 0.5dBm/km to all frequencies (0.4dB/km with RG58, 0.2dB/m with RG213 and 0.06dB/m with 1/2″cellflex @700MHz)
  • monomode fiber is low cost
  • electromagnetic isolation
  • light weight:150m on drum is 2.3kg (100m of RG213 is 14kg)
  • much easy to deploy, low radius of curvature.
  • complete isolation between antenna and receiver.

Additional information

Weight 0,300 g



Bandwidth 470Mhz–800Mhz
RF inputs 2xBNC 50 ohms
DC feed 12V/200mA
Input attenuator 0/-10dB
Optical output OpticalCon Duo,1310nm, monomode, APC
Current 500 mA
– with one active antenna 600 mA
– with two active antennas 750 mA
Supply XLR4, 12W max
Dimensions 155 x 180 x 70 mm
Weight 1,3 Kg
Title Type Size
AFB-250-datasheet-EN-V1 AFB-250-datasheet-EN-V1 application/pdf 542 KB
AFB250-notice-EN AFB250-notice-EN application/pdf 263 KB
diagram_OVERLINE_UN_BSRF diagram_OVERLINE_UN_BSRF application/pdf 420 KB
Radio-over-fiber-basics-source Radio-over-fiber-basics-source application/pdf 487 KB
User-manual-AFB250-AFR200-ACH642-ACH862 User-manual-AFB250-AFR200-ACH642-ACH862 application/pdf 8 MB