Broadband filters (Greenford UB6 8PF)

I have two broadband filters which plug into your phone socket.
Also have an adapter for connecting an cable to your phone socket (unsure of the name of this type of cable).
They have been knockng about in a drawer, so unsure if they will work or not, so you are welcome to try.

Location-close to Greenford stn.

Fair Chance Policy: I’ll wait before choosing a recipient to give more people a chance to reply.