This is the module of appropriately amplified LPF filters mounted in the 2000+ version. Also attached to the filters is an appropriately amplified WFS measuring circuit, whose functionality is identical to its "skinnier" counterpart for the 1200 version.
The module has seven switchable seven-element LPF filters for 160, 80 and 60, 40, 30 and 20, 17 and 15, 12 and 10, and 6m bands.
The filters shall provide harmonic frequency attenuation of not less than 40 dB.