Hi Annie

I fully concur with you views and the last thing that I wish to do is to further complicate the whole issues of frequencies, in fact, quite the opposite, I am trying to simplify the whole mess of available frequencies (at least for my Mum's problem). Of course I will go with the recomendations from the manual (GB-4000) to begin with. This also brings me to another point. Does anyone know who the manufacturers are of the GB-4000 this info should be on the compliance plate at the back of or under the casing.

Kind regards