Antenna amplifier ALCAD AM487, for mast, 1xFM G20dB, 1xDAB G20dB, 2xUHF G32dB, filter 5G, U108dBµV

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


- 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)
- FM gain: 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 DAB / BIII / UHF bands: -16 dB
- noise figure in 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
- suppression between inputs: >30 dB
- input reflection attenuation: >10 dB
- power supply of preamplifiers in UHF inputs: 12V / 50 mA (switchable)
- power supply (external source AL-105 or AL-205): to the amplifier output + 12V / 45 mA
- input and output connectors: 5 x F female connector
- working temperature: -10 ° C ..... + 65 ° C
- degree of protection: IP 53
- weight: 0.25 kg
- package size: 110 x 125 x 45 mm