The Johansson 4581 is a professional 8-way passive tap for distributing TV and satellite signals from a main trunk line to up to eight separate outlets simultaneously. With a tap loss of 16 dB and a frequency range covering 5–2300 MHz, it supports all terrestrial, cable and satellite IF distribution applications.

Designed for indoor installation in residential blocks, MDUs, and commercial antenna distribution systems, the 4581 features a compact nickel-plated zinc diecast housing with F-type connectors and DC power pass capability for powering active antennas or line amplifiers.

Key Features

• 8-way passive tap covering 5–2300 MHz (DVB-T/T2, DVB-C, SAT IF)
• Tap loss 16 dB (±2 dB) for controlled, predictable signal distribution
• Through (insertion) loss <5 dB, preserving signal on the main trunk line
• Tap-to-tap and output-to-tap isolation >20 dB
• DC power pass (input/output) for powering active components inline
• F-type connectors throughout for reliable, interference-free connections
• Nickel-plated zinc diecast housing — compact and robust

Product Benefits

• 8 simultaneous tap ports enable multi-room or multi-flat distribution from a single cable run
• Predictable 16 dB tap attenuation simplifies system level calculations
• Low trunk-line insertion loss keeps the main distribution signal intact for further cascade
• Professional Scandinavian build quality ensures long-term, maintenance-free performance
• Compact form factor fits easily in distribution boxes and concealed enclosures

Technical Specifications

• Frequency Range: 5–2300 MHz
• Number of Tap Outputs: 8
• Tap Loss: 16 dB (±2 dB)
• Insertion Loss (Through): <5 dB
• Port Isolation: >20 dB
• Return Loss: >10 dB
• Impedance: 75 Ω
• Connector Type: F-type
• DC Pass: Yes (input/output)
• Housing: Nickel-plated zinc diecast
• Power Supply: Passive (no power required)
• Dimensions: 57 × 120 × 25 mm

Why You'll Love It

The Johansson 4581 is the go-to solution for professional installers who need to distribute a single antenna feed to eight outlets without compromising signal quality — delivering the reliability and precision that Johansson is known for worldwide.