Hamachi should not be required on a single LAN, as said, it has worked fine on vanilla.
I am able to log in Minecraft on the technic launcher, and open the Tekkit screen. I then go to multi player, do a direct connect of
192.168.1.7:25565 or 192.168.1.7 and it takes about a minute to say the connection timed out. If I try a set server, it says failed to connect fairly quickly.
What I may try next is to put the server on my computer (its a bit faster anyway and see if we can do it that way.
Many thanks, and appreciate the ideas
Cheers