To solve the problem I got here (see first post with diagram). Must be something which receives a signal (wireless) from router to transmit it (wireless again) to laptop wifi. The distance from 'full signal' to 'no signal' is very short, maybe 2 feet, but the angles are large (and wifi only travels in a straight line). So I don't really need something to boost the signal to a much stronger one, but only something strong enough to get the signal past a tough corner. Sellers worldwide welcome. EU sellers will be given preference only if product is identical or better. Method of payment flexible, preferably paypal. You can check my ebay feedback which is 100%.