In article ,
Fred McKenzie wrote:

Rather than using the triplexer/diplexer combination, there might be
less loss if you use a separate antenna for 1.25m, with just a diplexer
for 2m/70cm.

David-

I was not thinking. With a separate 1.25m antenna, no duplexer would be
needed with your radio for the 2m/70cm antenna! That might be the
simplest arrangement.

Fred
K4DII