A
Sensible comment!!
Yes, check out the web site I posted above, the "UK unit" blocks both 900 and 1800MHz, other units are available for USA bands and Far East bands etc.
But I'd like to re-iterate the bit about
responsible use. If you install one in a meeting room, or a church, or your own office, you need to make sure that everyone entering realises that their phone is not going to work.
If you are sitting in a restaurant and switch on this litle "pocket device", there is a doctor on call on the next table one side, and a flight crew member on standby on the other side. These are not the "mobile phone pests" that chat all the time but they
need their phones, and may not realise you have just blocked out the local hospital and their crewing department!
I really like my UK mobile phone - I live in the Middle East and it costs somebody here about one pound-fifty to call me - it NEVER rings unless it's a real emergency
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What goes around . . .
. . often lands better!