A balun is an electrical device that converts between a balanced signal and an unbalanced signal.
Transformer baluns can also be used to connect lines of differing impedance. Sometimes, in the case of transformer baluns, they use magnetic coupling but need not do so. Common-mode chokes are also used as baluns and work by eliminating, rather than ignoring, common mode signals. This belun is designed for RF cable rating up to 3kW.
This product has been added with a Common Mode Coax Choke (CMCC) in order to reduce the common mode currents over the shield (negative part of the feed line).
Common-mode choke coils work as a simple wire against differential mode current (signal), while they work as an inductor against common-mode current (noise). This box is designed as a common-mode filter for RF cable rating up to 3kW.
What about for Common-mode filter for coax
- Any devices with RF cable
- Drastically reduces the noise picked up by the coaxial braid and the common mode currents circulated between the antenna feed point and the station.
- Common-Mode Current insulator
- High curren insulation
- 2mm full copper wire
- triple gloss surface
- Low insert loss
Type : 4:1
Core(s): AMIDON FT240-43
Optimal Freq. Range: 1-10MHz
Load power: 3kW @ 50 Ohm adapted line
Dimensions: 170x130x80 mm **
Insertion Loss : from 0.1 dB up to 0.20 dB depending for bands
Common mode attenuation : *please see graphics
**) the container used may be different from that shown in the photograph, while respecting the IP66 certification and the structural characteristics. This could be due to variations or changes in the supply of the containers. In any case, the electrical characteristics remain the same.