Antenna amplifier ALCAD AM387 for mast

Product detailed description

The Alcad AM387 is a three-input mast amplifier in a new and improved design, with increased weather resistance and increased oscillation resistance. The AM387 has LTE700 band suppression (it has a built-in 5G filter and amplifies UHF only up to 694MHz). The amplifier is suitable for both indoor and outdoor mounting. The individual inputs have separate gain control by a resistive trimmer, the +12V power supply to the amplifier is provided remotely over a coaxial cable via the amplifier output, the original power supplies are AL-105 or AL-205, which include a power switch and also have a broadband splitter integrated in them. The amplifier is manufactured by SMT technology and is housed in a Zamac casting, the plastic housing guarantees increased protection against weather conditions, the plastic housing of the amplifier is adapted for both mast mounting (by means of the supplied stirrup) and wall mounting, the inputs and outputs are on F-connectors, at the UHF input it is possible to switch on the power supply for the preamplifiers by +12V/50 mA switch.

Technical parameters:

- number of inputs/outputs: 3 / 1
- amplifier input: 1 x FM (88-108 MHz)
- amplifier input: 1 x DAB/BIII (160-260 MHz)
- amplifier input: 1 x UHF (470-694 MHz)
- gain in FM/DAB/BIII bands: 20 dB
- uHF gain: 34 dB
- fM/DAB/BIII band ripple: ±1 dB
- ripple in UHF band: ±2 dB
- gain control in FM/DAB/BIII bands: -20 dB
- gain control in UHF band: -16 dB
- noise figure in FM/DAB bands: 5 dB
- uHF noise figure: 3.5 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
- preamplifier power supply for UHF input: 12V/50 mA (switchable)
- external power supply (AL-105 or AL-205): +12V/45 mA
- connectors: 4 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