Socket to me (sorry)... - UK Vintage Radio Repair and Restoration Discussion Forum

Nanozeugma · 12th Jul 2018, 10:52 pm

This (image attached) is a McMurdo octal socket. It connects the two chassis (RF and Power) together in a Murphy A188C console radio receiver.

Q. Has anyone any useful thoughts as to how two separate the two halves without damaging it - or even better has succeeded in doing so?

Any advice most gratefully received.

Many thanks

Refugee · 12th Jul 2018, 11:22 pm

The metal top just pushes on. The socket will be a regular octal part without the flange that screws to the chassis. I bought some male ones to make adapters to replace an octal valve with a more modern one. The one you has a groove around the edge and a slot for the pip.
Mine are a little bit less meaty and do not have the depth for the groove that the indent close to the slot fits in on yours. There will be a notch for the pip.
It should pull off.

Graham G3ZVT · 13th Jul 2018, 12:08 am

This one is 11 pin, but the shell looks identical

Broad bladed screwdriver in the radial slot and twist until the shell moves > 1mm then use a smaller tool to ease the shell back all around the circumference pushing the cable through the grommet at the same time

Click image for larger version

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Click image for larger version

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I was probably being over cautious.

Refugee · 13th Jul 2018, 12:27 am

That is exactly what I expected to see.

Nanozeugma · 14th Jul 2018, 11:25 pm

Thanks for the suggestions people

12th Jul 2018, 10:52 pm	#1
Nanozeugma Heptode Join Date: Nov 2017 Location: London, UK. Bury, Lancashire quite regularly :) Posts: 611	Socket to me (sorry)... This (image attached) is a McMurdo octal socket. It connects the two chassis (RF and Power) together in a Murphy A188C console radio receiver. Q. Has anyone any useful thoughts as to how two separate the two halves without damaging it - or even better has succeeded in doing so? Any advice most gratefully received. Many thanks Attached Thumbnails __________________ Thermionic Emission, warms the cockles of your tubes.

12th Jul 2018, 11:22 pm	#2
Refugee Dekatron Join Date: Apr 2012 Location: Worksop, Nottinghamshire, UK. Posts: 5,553	Re: Socket to me (sorry)... The metal top just pushes on. The socket will be a regular octal part without the flange that screws to the chassis. I bought some male ones to make adapters to replace an octal valve with a more modern one. The one you has a groove around the edge and a slot for the pip. Mine are a little bit less meaty and do not have the depth for the groove that the indent close to the slot fits in on yours. There will be a notch for the pip. It should pull off.

13th Jul 2018, 12:08 am	#3
Graham G3ZVT Dekatron Join Date: May 2010 Location: Greater Manchester, UK. Posts: 18,711	Re: Socket to me (sorry)... This one is 11 pin, but the shell looks identical Broad bladed screwdriver in the radial slot and twist until the shell moves > 1mm then use a smaller tool to ease the shell back all around the circumference pushing the cable through the grommet at the same time I was probably being over cautious. __________________ -- Graham. G3ZVT

13th Jul 2018, 12:27 am	#4
Refugee Dekatron Join Date: Apr 2012 Location: Worksop, Nottinghamshire, UK. Posts: 5,553	Re: Socket to me (sorry)... That is exactly what I expected to see.

14th Jul 2018, 11:25 pm	#5
Nanozeugma Heptode Join Date: Nov 2017 Location: London, UK. Bury, Lancashire quite regularly :) Posts: 611	Re: Socket to me (sorry)... Thanks for the suggestions people __________________ Thermionic Emission, warms the cockles of your tubes.