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Queen's Silver Jubilee Trimphone

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  • Queen's Silver Jubilee Trimphone

    A limited edition press button Trimphone to commemorate the Queen's Silver Jubilee. This was the most modern British telephone in 1977, and is the pulse dialling model because most telephone exchanges did not work with DTMF, although a DTMF trimphone existed at the time for use with PABXs.

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    No telephones were manufactured to commemorate the Queen's Golden and Diamond Jubilees. Should a platinum plated iPhone be manufactured to commemorate the Queen's Platinum Jubilee?

  • #2
    No doubt Liz would have been given one by BT
    wonder if she ever used it

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    • #3
      A fine example but --- Trimphones were a BIG mistake! HORRIBLE things. Many innovative features but very impractical. Easily broken because they were so light, hard to use the rotary dial for the same reason, badly designed and manufactured microphone module that was well, rotten! and best of all they contained a radioactive gas to cause the dial to be luminous, the so called betalight. Eventually the GPO/BT had to recover literally millions of the luminous dial component and although pretty safe individually safe, when a huge number of the things, each containing a squirt of tritium gas was in one place an entirely different situation arose. Eventually the UKAEA (I think it was) had to extract the tritium and process it to make it safe. BUT in the right setting they did look smart!

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      • #4
        I heard ownered often had to use Blutak to stick them down to a tabletop as they were so light they would slide over the table when you tried to dial!

        Also my Mum reckoned the ringer wasn't loud enough to be heard in another room compared to the usual bell, though some had an adjustable volume.
        The Trickster On The Roof

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        • #5
          Originally posted by Richard1978 View Post
          I heard ownered often had to use Blutak to stick them down to a tabletop as they were so light they would slide over the table when you tried to dial!

          Also my Mum reckoned the ringer wasn't loud enough to be heard in another room compared to the usual bell, though some had an adjustable volume.
          Correct on both counts!

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          • #6
            The pulse dialling press button Trimphone was officially referred to as the 766 telephone. It was first produced in 1976.

            https://www.britishtelephones.com/t766.htm

            The history of the original dial Trimphone - 712 / 722 telephone.

            https://www.britishtelephones.com/hist722.htm

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