It may be better to add a Wireless Access Point
, or even a couple.
Ignore (for now) the big sponsored adds at the start there and read the links about what a WAP is first.
Another option once you have read up on WAPs, if you or one of the others have an unused router lying around that has good wireless
, it is usually easy to disable its DSL connection if it has one and also its DHCP function and use that as a WAP.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. 200GB. Sync 74565/13753Kbps @ 600m. BQMs - IPv4