For 4M (70MHz) I use a homebrewed transverter built to a design called the "Cray" which was published in the "VHF UHF DX book", this is driven by my IC-735 transceiver and feeds into a converted Microwave Modules 50MHz amplifier giving me about 45W output. 4M and 6M both share the same aerial, a 5+5 element design by Pop YU7EF.

For 70cms (430MHz) I use an Icom IC-471E and an amplifier giving me 100W output which feeds into a 19 element F9FT beam.