The Johansson 7474L2/2437 masthead amplifier combines 2, 3 or 4 terrestrial TV antennas and automatically scans channels using SMART AMP technology, with no manual programming required. It amplifies weaker signals and provides a uniform output level of 90 dBµV across all channels. The LTE band reuse function allows channels of the same frequency to be moved to the LTE band.
SAW filters on all four inputs provide protection against 5G and LTE interference, while all ports have ESD protection. The 2437 power supply delivers 12 V DC via coaxial cable and can be mounted on a wall or DIN rail. The kit includes the 7474L2 amplifier, the 2437 power supply, a manual and a wall bracket.
- Type: Masthead amplifier
- Amplifier inputs: 4
- Amplifier outputs: 1
- Technology: SMART AMP
- Frequency range: 174–862 MHz (VHF Band III + UHF)
- Output level: 90 dBµV across all channels
- LTE rejection: >40 dB (5G, above CH48)
- Adjacent channel isolation: >35 dB
- Input sensitivity: Minimum 40 dBµV
- LTE band reuse: L2 = CH49–69 (694–862 MHz), with ON/OFF switch
- Filters: SAW filters on all inputs
- Amplifier power supply: 12 V / 350 mA, DC via coaxial cable
- Operating temperature: -20 to +50 °C
- Power supply inputs: 1
- Power supply outputs: 2
- Power supply output: 12 V DC / 400 mA
- Power supply AC input: 110–240 V AC / 50–60 Hz / 6.5 W
- Power supply insertion loss: 4–5 dB
- Power supply output isolation: 10 dB
- Power supply protection: Short-circuit protection
- Power supply indicator: Power LED
- Power supply mounting: Wall or DIN rail
- Port protection: ESD
- Package contents: 7474L2 amplifier, 2437 power supply, manual, wall bracket
- Type
- Mast Amplifier
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.