The Johansson 203112 masthead amplifier boosts VHF and UHF television signals and has 3 inputs. The gain is adjustable via a potentiometer and reaches up to 40 dB in the UHF band. The protective housing insulates the electronics and protects them from moisture, making the amplifier suitable for outdoor installation.

It is powered by a 24 V power supply with 2 outputs, which is included in the package.

• Type: Masthead
• Band: VHF-UHF
• Frequency range: 170–230 MHz / 470–862 MHz
• Inputs: 3
• Gain: 10–30 dB (VHF) / 25–40 dB (UHF), adjustable via potentiometer
• Noise figure: 3.5 dB
• Maximum output level: 105 dBmV
• Power supply outputs: 2
• Power supply: 24 V
• Power consumption: 75 mA
• GSM/LTE filter: Not included
• Package contents: Masthead amplifier, manual