Close over coax,
far over fiber, same receivers.
The ACH-642 is a dual-channel hybrid combiner that sums two coaxial antennas (100–900 MHz, DC-feed) and up to four fiber antennas (via AFB-250) into two output BNCs. 1U rack form factor, universal mains power. Designed for setups that mix nearby stage and distant zones. Made in France.
Coax band
100 – 900 MHz
Fiber band
470 – 800 MHz (AFB-250)
Inputs
2 coax · 2 × Duo fibre (4)
RF outputs
2 × BNC 50 Ω
Format
1U rack · 3,5 kg
Highlights
Near and far, combined
Two nearby coax antennas + four remote fiber antennas, summed on two output BNCs. One rack covers both the immediate perimeter and distant zones.
2 coax + 4 fiber
VHF to UHF on coax
Coax inputs accept 100–900 MHz: VHF IEMs, broadcast UHF, HF camera. Fiber inputs stay in the AFB-250 band (470–800 MHz). No band restriction on the local side.
Coax 100–900 · fiber 470–800
Coax DC-feed
12 V / 200 mA on each coax input: you power active antennas straight from the ACH-642, like on any BSRF splitter.
12 V · 200 mA · coax
Specifications
The numbers that matter.
Condensed excerpt. See the datasheet for detailed conditions.
RF
Mechanical & power
Use cases
Multi-zone broadcast
Cover stage, dressing rooms and auditorium with one combiner
Two coax antennas in the auditorium ceiling, four fiber antennas spread across dressing rooms and backstage: the ACH-642 sums it all onto two BNCs for the control-room wireless receivers.
OB-van event
Mix nearby stage and relay antennas
Coax for antennas right on stage, fiber for antennas in the stands or on a neighbouring building: the same HF rack receives with no coverage hole.
Permanent theatre
Consolidate existing infrastructure without rebuilding
Keep existing coax antennas in place, add fiber antennas in new or hard-to-reach areas, and wire everything into an ACH-642: two BNCs out, no full redesign.
Documentation
Everything you need before buying.
Datasheets and user manuals available in PDF format.
Product range
Other BSRF instruments.
AFB-250
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…
Quote on request
AFR-250S
Small form factor dual radio over fiber receiver. The AFR-250S is a optical/RF converter. Used with the AFB-250 it let you take advantage of propagation of light on monomode fiber. Tha AFR-250S can be used in several situation, it can be used on…
Quote on request
AFR-200
AFR-200 : Dual Fiber Antenna receiver (2 fibers) AFR receivers demodulate RF signals from two fiber optics antennas to coax outputs towards diversity RF receivers. Use this product with one AFB-250, this is the basic set.
Quote on request
Want to mix coax and fiber in one rack?
Available by quote, 3–4 weeks delivery.