The power amp will not cover the new bands. There are no bandpass filters installed for that low a frequency. But you can build or by an appropriate amp for the frequencies and drive it with the Transverter port on your rig. No TURF file needed.
i know there is no LPF, but that can be MY responsibility...the broadband transformers in the final may not be very efficient at the lower freq's, though...but, i bet there's more rf there than the transverter port, ken
In order to use any band without the power amplifier, you need to use the XVTR output port on the radio. If you set the radio to transmit on the XVTR port, you will find that it will transmit anywhere. No TURF needed.