Only thing I've found is this 4P-3pos switch from digikey (the first figure 10, page 3). This would mean you could only select 2 positions (the third being left unfilled to remove power from the receiver). You could gang two of them together, so depending on how you wanted, Switch 1 would be off,P1,Other bank, and Switch 2 would be P2,P3,P4.. Just an idea.