Jerry,
I was talking about an add-on filter board between T11 and K3 with all the existing onboard parts removed to populate the new plug-in filters or just disabled. Dual relay means a relay at each end of the LPFs/BPFs the filter is either connected to the RF bus or grounded, maximum number of series contacts is 2 and they are DPDT and bifurcated. Input RF and output RF is never combined in one relay, different LPFs/BPFs are never combined in one relay.
73 Kees K5BCQ
