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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Bandpass filter 144-146 MHz, 200WEffectively blocks out unwanted interference signals, very steep edges, N socket
Available from 20.12.2023
€225.00incl. VAT, plus shipping €189.08 -
Folding Ferrite toroid up to 5,4mm cable diam.Round Ferrite core 5,4mm
In stock, shipped in 1 to 2 days
€3.80incl. VAT, plus shipping €3.19 -
Yaesu CW-Filter 300Hz f. FT-DX3000300Hz Roofing Filter for FTDX-3000D
In stock, shipped in 1 to 2 days
€149.90incl. VAT, plus shipping €125.97 -
Elad QSF-06 Preselector without filtersThe automatic control is designed for use with the FDM-DUO transceiver, but could be adapted to any other radio as well.
In stock, shipped in 1 to 2 days
€229.00incl. VAT, plus shipping €192.44 -
Yaesu MTU External Band Filter 160 - 20mExternal band filters 160m, 80/40m or30/20m, for various Yaesu transceivers
In stock, shipped in 1 to 2 days
As low as: €619.00incl. VAT, plus shipping €520.17 -
Folding Ferrite toroid up to 11,7mm cable diam.Round Ferrite core 11,7mm
In stock, shipped in 1 to 2 days
€4.90incl. VAT, plus shipping €4.12 -
Bandpass filter/preamplifier 6m, 2m or 70cmBandpass filter and preamplifier in one housing. Different models for 50/144/432 MHz, 2 or 3 outputs, suitable for high transmit power.
Please select a product
As low as: €269.00incl. VAT, plus shipping €226.05 -
€7.50incl. VAT, plus shipping €6.30 -
Yaesu SSB-Filter 1,2 kHz f. FT-DX101SSB Filter 1.2 kHz, for FT-DX101D/MP sub receiver.
In stock, shipped in 1 to 2 days
€164.40incl. VAT, plus shipping €138.15 -
€4.00incl. VAT, plus shipping €3.36
