The Talking Machine Forum — For All Antique Phonographs & Recordings

There is an interesting Decca "trench" portable in the collection of the Science Museum (Exhibition Road, South Kensigton, London).

I stumbled on it in this web page yesterday while looking for something entirely different.

https://blog.sciencemuseum.org.uk/the-g ... diered-on/

Lah Ca wrote: Sun Nov 26, 2023 10:23 am There is an interesting Decca "trench" portable in the collection of the Science Museum (Exhibition Road, South Kensigton, London).

I stumbled on it in this web page yesterday while looking for something entirely different.

https://blog.sciencemuseum.org.uk/the-g ... diered-on/

This is great to see.

When they say the reflector is 'unusually made of copper rather than the more common aluminium' though ................ I thought the copper reflectors just had a copper type coating on top of aluminium ? Were they actually solid copper then ?

You're right, the copper finish is a plating, not solid copper. You can see the base metal in the edges of the bullet hole.

Oedipus wrote: Sun Nov 26, 2023 12:10 pm You're right, the copper finish is a plating, not solid copper. You can see the base metal in the edges of the bullet hole.

Thank you so VERY much Oedipus !

I was worried for a moment as the two I have with copper reflectors clearly show they are not solid copper.

Phew !