RF bandpass filters

RF bandpass filterCross Country Wireless produce a range of RF bandpass filters which can act as lightning surge arrestors

The filter products cover the 50, 70, 144, 432 and 1296 MHz amateur radio bands. A special 144 / 432 MHz dualband filter is also available for use with dualband transceivers.

  • High performance CAD designed bandpass filter using cascaded 9 pole Chebyshev high pass and low pass filters

  • Ideal for SOTA, RAYNET, ARES or RACES for fixed, mobile or portable stations operating on multi-transmitter sites

  • Passband insertion loss <1 dB

  • 144 MHz, +/- 7 MHz -6 dB, stopband better than -50 dB (typically -55 to -70 dB)

  • Advanced design also acts as a lightning surge arrestor capable of diverting repetitive induced lightning surges up to 5000 Amps

  • 100 Watts RF max

  • N type female connectors as standard. Options - SO239 females or N type in-line (1 N male / 1 N female)

  • Painted aluminium case sealed with a rubber gasket to IP65 standard (dust tight and protected against water jets)

  • RoHS certified free from certain hazardous substances banned by the EU Click here for a sample RoHS certificate.

  • Each filter is supplied with a test certificate detailing its RF and VSWR performance Click here for a sample filter test certificate.

  • Carefully made in the UK

  • Click here for a frequency plot of a typical 50 MHz bandpass filter.

  • Click here for a frequency plot of a typical 70 MHz bandpass filter.

  • Click here for a frequency plot of a typical 144 MHz bandpass filter.

    Recent eBay feedback from our customers on the filters:

    High Quality item and good service. Buy from with confidence. A++++ Buyer: g0tmx (99)

    Excellent,Service,Information . Communication is outstanding very satisfied Buyer: mac.m0ajc (18)

    Excellent product.Well made. 1st Class supporting test documentation.73. Buyer: yl25d (299)

    Excellent service,superb communications,,thank you. Buyer: mac.m0ajc (18)

    Nice bit of kit, well made. Thanks. Buyer: gd0tep (244)

    Click here for an unbiased review of our 1296 MHz bandpass filter by John,G0PVR.

    Click here for details of the RAYNET filter loan scheme using our filters.

    RF bandpass filter under testThe 144 MHz prototype filter was tested on Winter Hill near Bolton, a well known broadcast site, during a RAYNET exercise for the Bolton Scout Hike in April 2007. Checkpoint 3 was located on a hill top with many other radio transmitters. The FDK transceiver used was unuseable without the filter due to reciever overload. With the filter in circuit no interference was heard at all. (Note the photo doesn't even show the broadcast site!)

    See our eBay shop for details on how to buy our filter and diplexer products.

    If you require more detailed information or need a special one-off filter or diplexer please contact us by email at info@crosscountrywireless.net or phone +44(0)1204 410626 or +44(0)7752 391908.



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