The Johansson 7724L2 is a distribution line amplifier for terrestrial and VHF television signals. It accepts a single combined VHF/UHF antenna input across two sub-bands (40–320 MHz and 470–694 MHz) and splits the amplified signal to four outputs. A built-in LTE/5G filter suppresses interference from mobile networks operating above the UHF television band without requiring an external filter module.

VHF and UHF gain are each adjustable independently, giving precise control over the output level for each frequency range. A 24 VDC switchable remote power output allows a mast-head amplifier to be powered through the coaxial cable from the same unit. The amplifier can be mounted on a wall or on a standard DIN rail, and a power LED indicates operational status.

Key Features

• 1 input: 40–320 + 470–694 MHz (combined VHF/UHF)
• 4 outputs
• Adjustable VHF gain: 13–28 dB
• Adjustable UHF gain: 15–25 dB
• Built-in LTE/5G filter
• 24 VDC switchable remote power output (55 mA)
• Power LED indicator
• Wall and DIN rail mountable
• Mains supply: 230 V ~ / 6.9 VA

Product Benefits

• Independent VHF and UHF gain adjustment allows the signal level on each band to be optimised separately for the receiving installation
• Built-in LTE/5G filter eliminates the need for a separate external filter, reducing component count and installation cost
• Four outputs distribute the amplified signal to four separate TV points from a single amplifier unit
• Switchable 24 VDC remote power through the coax eliminates the need for a separate power supply at the mast head
• Wall or DIN rail mounting flexibility suits both open wall installations and distribution cabinet integration

Technical Specifications

• Model: 7724L2
• Frequency range: 40–320 + 470–694 MHz
• Number of inputs: 1
• Number of outputs: 4
• Adjustable VHF gain: 13–28 dB
• Adjustable UHF gain: 15–25 dB
• Noise figure: 3.0 dB (typ.)
• Maximum output level: 102 dBµV
• Return loss (input/output): 10 dB
• Isolation between outputs: 15 dB
• Remote power: 24V / 55mA
• Power: 230V~ / 6.9VA
• Mounting: Wall or DIN rail

Why You'll Love It

• One unit covers VHF and UHF in a single box — no separate VHF or UHF amplifiers needed in the same installation
• Independent gain trimmers for each band mean you can balance the output level across your whole antenna system in one place
• The integrated LTE/5G filter keeps the distribution clean as mobile networks expand into television spectrum
• DIN rail mounting option lets the amplifier sit neatly inside a communications cabinet alongside other head-end equipment