The problem with the internet dropping out when I am on 80 metres now appears to have been resolved and the new DLink router is working fine. The next problem to solve is the pump on our fishpond switching off every time i transmit on the same band. It appears to be tripping out at the RCB, one option is just to put an ordinary 13 amp plug on instead, as the wiring to the electrics is all run in "pyro" down the garden so it should not be a problem.
As it happens conditions on 80 metres in the morning have been super, with very little band noise. Barry G3WIS has been calling into the net on 3 watts most mornings and has been readable throughout, it just proves what can be done on such little power.