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Robin

On 05/01/2020 20:56, wrote:
On Sunday, 5 January 2020 20:43:25 UTC, Robin wrote:
I visited a HH5 today. FWIW PSU was P/N 19118836, model no.
S018RM1200150, "for use with BT Home Hub 4 & 5 Type A"; my cheap
Workzone caliper gauge showed an external barrel diameter of 5.44mm; and
measured the diameter of a screwdriver which was a sloppy fit inside as
2.88mm.

Thank you. So I definately need a pin hole bigger than 2.1mm.

I'm not definite about anything much these days*. But (a) the inner hole
looks bigger than the hole in the PSU for a HH3 and (b) the /tip/ of a
3.5mm jack plug will enter it and I think they are usually 3mm. But I
can't say it doesn't narrow further in.

*quantum theory meets solipsism; or perhaps just grump old age

--
Robin
reply-to address is (intended to be) valid