my back of envelope calcs show that if you use four pole filters and chose the correct break point for the 5 Mhz filter at about 8.5 Mhz you can put in a no switched filter set for 60- 40- 30 mtrs and get about -17 dB suppression for all of those three bands The basic LP filter design for the 7 Mhz filer would be as per the Qmx 40/30 mtr filter. However if you had only 2 poles for the 7 Mhz filter you'd get only about -13 dB of suppression on the 14 Mhz harmonic which may be/ would be light on once the primary signal had gone up to 55.4 dBm
his concept is on the basis that 60-40-30-20-17-15 MTRS is a complete band set that is acceptable . Spinning the cat by the tail that way may make it possible to have only one set of DPDT Relays (a pair) providing filter selection over that entire range. This the post 10 W amp filter I refer to. THis is based on harmonic plots I have seen published for the bare Hermes Lite.
Timothy Fidler