The Mini-Kits EME209 Low Pass Filters are part of a building block to construct a high performance M1 Series HF Transceiver.  The EME209 module was designed with two relay switchable low pass filters on a single board, are ideal for reducing harmonics on the output of RF power amplifiers up to 100 Watts CW.  Some filter modules cover a number of HF bands including WARC bands which reduces the cost of separate filters for each band. The LPF-19M-30M module board covers the 20/17M with one filter, and the 15/12/10M bands with the other filter.  The available filter modules cover all of the HF Amateur bands excluding the 30M band, which cannot be used on the M1 Transceiver due to the use of a 9MHz IF.

The design incorporates on board relays to switch the filters into the RF signal path, and to provide filter isolation by grounding the filter when switched out of circuit.  The modules use stackable headers so that multiple filter boards can be stacked and controlled through the same IDC interface connector for band switching.

For more detailed information on how this module Kit can be used, Please refer to the EME209 Kit webpage.

This Kit uses a  number of larger 1206 size surface mount capacitors due to component availability.  The basic Kit includes the PC board and all on board components, but excludes the SMA connectors which can be purchased separately if required.