Filters, Antenna filters

The short wave, but also other bands are affected by interferences. Some of these stem from natural processes, for example noise from thunderstorms or processes in the ionosphere, others are man-made disturbances. These are caused by nearby transmitters, by misaligned transmitter signals and also by overstrained receiver inputs.


In most cases, filters can be a great help here. A high frequency filter limits the bandwidth that is received, for example from the antenna to the receiver, or from the power amplifier to the antenna. In this way unnecessary components of the signal are filtered out. Modern SDR receivers implement the filter technology in the form of algorithms in the processor, but practice has shown that classical filters still offer many possibilities to improve reception.


Other filter technology is used to suppress interference from devices, for example in the case of direct radiation. Here WiMo offers a wide range of ferrites, which are not only used to build transformers, but can also be used as chokes to effectively prevent direct radiation.

 

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  1. Yaesu CW-Filter 300Hz f. FT-DX101
    Brand
    Yaesu
    SKU
    XF-128CN
    €164.40
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
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  2. €147.90
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    In stock, shipped in 3 to 4 days.
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  3. €164.40
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
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  4. 270 Hz CW Filter
    Brand
    Kenwood
    SKU
    YG-82CN1
    €199.00
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
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  5. Yaesu CW-Filter 300Hz f. FT-DX101
    Brand
    Yaesu
    SKU
    XF-129CN
    €164.40
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
    Details
  6. €139.00
    incl. 16% VAT plus shipping
    Unfortunately this product is not available anymore. Sorry.
  7. Yaesu CW-Filter 300Hz f. FT-DX3000
    Brand
    Yaesu
    SKU
    XF-127CN
    €149.90
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
    Details
  8. Common mode filter 1,8-70 MHz, 2000W
    Brand
    Diamond
    SKU
    CMF-2000
    €122.00
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
    Details
  9. €164.40
    incl. 16% VAT plus shipping
    In stock, shipped in 3 to 4 days.
    Details
  10. €149.00
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    In stock, shipped in 3 to 4 days.
    Details
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