Baluns, Chokes

A sheath wave is a type of electromagnetic wave that spreads in a conductor along the outer sheath of a coaxial line. However, they can also be generated by inducing the actual transmitted signal on the outside of the coaxial sheath. At WiMo, we not only sell a wide range of sheath wave barriers, but we also manufacture them ourselves. Contact us for your individual requirements.



Items 11-20 of 59

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  1. Kelemen Balun 1000W/2000W
    Kelemen Balun 1000W/2000W

    Kelemen balun for 1000W or 2000W and 1:1, 1:2, 1:4, 1:6 or 1:9 to choose from

    In stock, shipped in 1 to 2 days

    As low as: €59.90
    incl. VAT, plus shipping €50.34
  2. Hari Mini-Balun 120W SSB/CW
    Hari Mini-Balun 120W SSB/CW

    Hari toroid balun; 120W SSB/CW; 1:1, 1:2, 1:4 and 1:6 to choose from

    In stock, shipped in 1 to 2 days

    As low as: €38.00
    incl. VAT, plus shipping €31.93
  3. Hari Balun 200W/1000W SSB/CW
    Hari Balun 200W/1000W SSB/CW

    Hari toroid balun SSB/CW, 200W/1000W and 1:1, 1:2, 1:4 and 1:6 transmission ratio to choose from

    In stock, shipped in 1 to 2 days

    As low as: €42.00
    incl. VAT, plus shipping €35.29
  4. CG Antenna Balun 100W SSB/CW
    CG Antenna Balun 100W SSB/CW

    CG-Antenna Balun for 80m-10m, max 100W (CW or SSB). 1:1, 1:4 and 1:9 to choose from

    In stock, shipped in 1 to 2 days

    As low as: €29.00
    incl. VAT, plus shipping €24.37
  5. Balun 1:49 - 600 Watt
    Balun 1:49 - 600 Watt

    Powerful balun 1:49 for end-fed half-wave antennas (EFHW), max. 600 W PEP

    In stock, shipped in 1 to 2 days

    €89.50
    incl. VAT, plus shipping €75.21
    SKU 11365.49
  6. EAntenna Choke, 1:1, 3 kW
    EAntenna Choke, 1:1, 3 kW

    Robust balun, transmission ratio 1:1 (choke, MWS)

    In stock, shipped in 1 to 2 days

    €69.00
    incl. VAT, plus shipping €57.98
    SKU 11369.CHOKE
  7. InnovAntennas Current Balun (Choke) 1-80 MHz  3kW
    InnovAntennas Current Balun (Choke) 1-80 MHz 3kW

    Wideband balun, waterproof, with screw terminals and PL socket

    In stock, shipped in 1 to 2 days

    €69.00
    incl. VAT, plus shipping €57.98
    SKU 18484.0503

Items 11-20 of 59

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FAQ

What are Sheath Waves?
A sheath wave is a type of electromagnetic wave that propagates through conductors. For example, the sheath wave propagates in a conductor along the outer sheath of a coaxial line.
How to reduce sheath waves?
A sheath wave barrier (also called a sheath wave absorber or sheath current filter) attached to a coaxial line in or near the equipment can attenuate or prevent high-frequency sheath waves. In the simplest case, it is a ferrite core that contains inner and outer conductors in coaxial cables and acts as a current-compensated choke or common-mode choke. A ferrite core also functions as a transformer so that a useful signal can be maintained as a push-pull signal. The cable can also be passed through the core several times to increase inductance against unwanted common mode signal components.
How do cladding wave filters work?
To reduce this interference, the entire cross-section of the cable is passed through a ferrite core (multiple times if necessary). Because of its inductance, this configuration acts like a choke with one or possibly more turns for common mode interference.
What are the different types of cladding wave filters?
There are split, snap-in ring and ribbon cable ferrites that can be applied to electrical cables to subsequently place ferrite cores around the cables for interference suppression. Snap-in ferrites are another name for cladding wave filters..