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 11-20 of 74

Filter
  1. Yaesu MTU External Band Filter 160 - 20m
    Yaesu MTU External Band Filter 160 - 20m

    External band filters 160m, 80/40m or30/20m, for various Yaesu transceivers

    In stock, shipped in 1 to 2 days

    As low as: €619.00
    incl. VAT, plus shipping €520.17
  2. Elad High/Lowpassfilter 500kHz/1700kHz
    Elad High/Lowpassfilter 500kHz/1700kHz

    Elad Low/Highpassfilter 500kHz/1700kHz, for FDM-DUO, FDM-DUO-R, QSF-06, SPF-08 and FDM-S3

    In stock, shipped in 1 to 2 days

    As low as: €22.00
    incl. VAT, plus shipping €18.49
  3. Elad bandpass filter, 160 to 12m and FM
    Elad bandpass filter, 160 to 12m and FM

    Elad bandpass filter shortwave amateur radio bands and VHF, suitable for FDM-DUO, FDM-DUO-R, QSF-06, SPF-08 and FDM-S3

    In stock, shipped in 1 to 2 days

    As low as: €22.00
    incl. VAT, plus shipping €18.49
  4. Yaesu CW-Filter 300Hz f. FT-DX101
    Yaesu CW-Filter 300Hz f. FT-DX101

    Roofing filter 300 Hz for FT-DX101D/MP main receiver

    In stock, shipped in 1 to 2 days

    €164.40
    incl. VAT, plus shipping €138.15
    SKU XF-128CN
  5. Low Pass Filter 30 MHz 5000W
    Low Pass Filter 30 MHz 5000W

    Robust low pass filter 30 MHz 5000Watt

    In stock, shipped in 1 to 2 days

    View accessories
    €389.00
    incl. VAT, plus shipping €326.89
    SKU LPF30-5000

Items 11-20 of 74

Filter

FAQ

What is an antenna filter and what is it used for?
An antenna filter is a device that prevents interference in signal transmission and provides a clear signal. It is used to reduce interference from other electrical devices or radio networks and improve the signal for audio or video transmission.
What are the types of antenna filters?
There are different types of antenna filters, such as bandpass filters, notch filters and diplexers. Each filter has a specific application area and may be optimized for specific radio frequencies. It is important to select the right filter for your needs.
How do I install an antenna filter?
Installing an antenna filter can vary depending on the model and application. Generally, the filter is connected between the antenna and the receiver. It is important to read the manufacturer's instructions carefully and follow all steps exactly to ensure a flawless installation.