Hi all.
I have a TP Link  Wireless N Modem Router (model TD W8960N)
Computer is  a Dell running Windows 7
The computer uses a  TP Link wireless N adapter to link to the modem/router

I set up the modem/router with an ethernet cable between it and the computer. This way, I created the wireless network and enabled access to the internet via my ISP settings- all good so far.

Then, undoing the cable, the wireless adapter seeks and finds the wireless network, I sign in and it all works fine...some of the time.

the same setup with an older Linksys modem/router (same TPLink wireless N adapter) has no issues at all.
this is the second TP Link modem/router I have tried, same issue!

what happens is, the internet connection disappears intermittently for a few minutes- 
the network disappears from the list of available networks and then magically reappears.
it effects access for all devices in the house- so it is not just the wireless N adapter.

I am at wit's end trying to sort it out. 
in the course of writing this email it has dropped out 5 or 6 times.

any suggestions?
is it an incompatibility somewhere?
is the connection from pole to house too weak or noisy to support the router's demands, so it just throws up its little hands in horror??

thanks for any comments... Theo