MF, Just found this nice to read article in the web: http://www.ov-erding.de/630m_Band.pdf German language. The OM modified an old IC735 to produce 50W RF power on 630m! He reports about a QSO to DF0
Very nice indeed! I would still also change the TX LPF that is switched into use when the rig is on 475kHz with the usual 6800pF/15uH components used in many designs. T94-2 or T106-2 cores should be