Low-pass filter LPF "BARRIER-50"

Low-pass filter LPF "BARRIER-50" is designed to solve difficult interference problems by suppressing out-of-band emission of radio transmitting devices operating at the frequencies below 54 MHz by adding a tremendous harmonics and hash attenuation, as well as the noise reduction to the electronic equipment (TVs, radios, etc.). It meant to be placed at the output of the amplifier or at the output of the antenna switch.
The filter is a multi-pole passive inductive-capacitive Low Pass Filter, constructed in a solid galvanized steel casing.

Connections to the load (antenna) and transmitter are utilizing coaxial connectors SO-239.

Each filter is supplied with the data on insertion loss (S21) and return loss (S11) parameters (measured by Vector Network Analyzer), frequency response graph and VSWR. These plots show the most detailed characteristics of each particular filter.

Specifications:

Bandwidth: 1.8 - 54MHz
Stopband: above 60MHz
Losses in the passband: no more than 0.2dB
In band attenuation:  at least 60dB.
Maximum continuous power, time unlimited: 1500W
CW/SSB contest style operation: 3000W
Maximum peak power: 5000W
VSWR, max: 1:1.2
Impedance: 50Ohm
Dimensions: 235x65x65mm (9.24”x2.56”x2.56”)
Weight, not more than: 0.9kg. (1.98lbs)
 

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