JUMA Roofing Filter FL2
 
JUMA Roofing Filter FL2 is an enhanced filter option for JUMA TRX2 transceivers. It is a carefully designed dual band width high dynamic range roofing filter for CW and SSB. It is using 9th and 12th order low noise active filters with optimized slopes to enhance the near frequency dynamic range.

This filter is very easy to install. Just unplug the standard filter and replace it by plugging the enhanced FL2 option to the same pin header connector. It is compatible with the official JUMA firmware and with third party firmware. No adjustment is needed.
JUMA Roofing Filter FL2 option is available as a component kit.

Technical documents for building
 
Part list     Schematics     Layout
 
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