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.

 

Items 1-10 of 71

Filter
  1. Yaesu XF-130CN Filter
    Yaesu XF-130CN Filter

    CW Narrow Roofing Filter Yaesu XF-130CN, 300 Hz, 9.005 MHz IF.

    In stock, shipped in 3 to 4 days.

    €149.00
    incl. VAT, plus shipping €125.21
    SKU XF-130CN
  2. 403A Band Pass Filter XL Series
    Bouvet-Expedtition
    403A Band Pass Filter XL Series

    Superlative bandpass filter, min. 55 dB blocking depth outside the band, max. power handling up to 4500 Watt, active cooling can be switched on. Optionally N or PL connections.

    Please select a product

    As low as: €479.00
    incl. VAT, plus shipping €402.52
  3. Bandpass filter for Colibri-SDR
    Bandpass filter for Colibri-SDR

    Optional bandpass filter board for Colibri SDR receivers, with switchable preamplifier and attenuator. Increases the large signal strength of the receiver.

    In stock, shipped in 3 to 4 days.

    €259.00
    incl. VAT, plus shipping €217.65
    SKU COLIBRI-BPF
  4. Bandpass filter 144-146 MHz, 200W
    Bandpass filter 144-146 MHz, 200W

    Effectively blocks out unwanted interference signals, very steep edges, N socket

    In stock, shipped in 3 to 4 days.

    €225.00
    incl. VAT, plus shipping €189.08
    SKU 18460.0656

Items 1-10 of 71

Filter