1976: Introducing the incredible, cordless MOBILE phone, Blue Peter, Retro Tech, BBC Archive

Blue Peter presenters Lesley Judd, Peter Purves and John Noakes demonstrate some exciting new technology with no strings attached a completely portable telephone. How does it work This clip was originally broadcast 14 October, 1976. Blue Peter is still going strong, with new editions of the show broadcast live on CBBC and BBC iPlayer every Friday at 5pm: For details about how your child (or grandchild ) can earn a Blue Peter badge, visit the CBBC website: You have now entered the BBC Archive, a time machine that will transport you back to the golden age of tv to educate, entertain and enlighten you with classic tv clips from the BBC vaults. Make sure you subscribe so that you never miss a single stop on our amazing journey through the BBC Archive