Proposed filter switching fr the rework.
BEfore everyone rushes off into filter relay config as in electrical this one can do 80m,? 40 (10 with changes) and 20-30m. And all on three outputs because of the cunning diode "Or.? Moreover it shorts the unused filter to GND (except for the 20-30 one) as per AJP suggestions . This of course is a LPF design and the power level at 50W and therefore input Z is not correct for uBit X use.??
Not beyond the wit of man /or women ! to fix that. What is really cunning is that the design is zero load when used on the 20m daylight service,? ie out and about on a battery.? "It's got a Cop motor before unleaded so it runs good on regular gas ....".? Perhaps worthy of consideration though all the relay select firmware has to change.? You lose 15 m tx but still need only three o/p as before . what the heck...I kept this on file for a rainy day.? ?Allison .. am I forgiven..? please. No metric fishing...from now on.
Personally I dislike the the idea of zero means a valid state from an electrical Pof View.. ie wire falls off . no fault occurs but a logic state changes . But on a PCB it seems acceptable.