Antenna amplifier ALCAD AM487 for mast

Alcad AM487 is a four-input mast amplifier in a new improved design, increased resistance to weather conditions and increased resistance to oscillation. AM-487 has a suppressed LTE700 band (it has a built-in 5G filter and amplifies UHF only up to 694MHz). The amplifier is suitable for installation in indoor and outdoor environments. Individual inputs have separate gain control with a resistor trimmer, the amplifier's +12V power supply is implemented remotely via a coaxial cable via the amplifier output, the original power supplies are AL-105 or AL-205, which include a power crossover and have an integrated broadband splitter. The amplifier is manufactured using SMT technology and is housed in a Zamac die-casting, the plastic cover guarantees increased protection against weather conditions, the plastic cover of the amplifier is adapted for both mast mounting (using the supplied bracket) and wall mounting, the inputs and outputs are on F-connectors, the UHF inputs can be switched on with a power switch for the preamplifiers +12V/50 mA.

Technical parameters:

- number of inputs/outputs: 4 / 1
- amplifier input: 1 x FM (88-108 MHz)
- amplifier input: DAB/BIII (160-260 MHz)
- amplifier input: 2 x UHF (470-694 MHz)
- gain in the FM band: 20 dB
- gain in the DAB band: 20 dB
- gain in the UHF band: 32 dB
- ripple in the FM/DAB bands: ±1 dB
- ripple in the UHF band: ±2 dB
- gain control in the FM band: -20 dB
- gain control in the DAB/BIII/UHF bands: -16 dB
- noise figure in the FM/DAB bands: 5 dB
- noise figure in the UHF band: 6 dB
- max. output level (DIN45004B): 108 dBµV
- max. output level (IMD3 -66 dB): 105 dBµV
- max. output level (IMD2 -60 dB): 93 dBµV
- rejection between inputs: >30 dB
- reflection attenuation at input: >10 dB
- power supply for preamplifiers in UHF inputs: 12V/50 mA (switchable)
- power supply (external source AL-105 or AL-205): to amplifier output +12V / 45 mA
- input and output connectors: 5 x F female connector
- operating temperature: -10°C - +65°C
- protection level: IP 53
- weight: 0.25 kg
- packaging dimensions: 110 x 125 x 45 mm