A252 VHF Aerial Plug(s)

[georgeek]

The internal VHF aerial plug is missing from my Murphy A252.

Attached is a photo of the left/rear of the chassis with the VHF aerial sockets marked.

One of the holes is larger than the other. Would this have been a two pronged plug or two separate plugs? If you can point me to an image that would be very helpful.

I have also attached a photo of one of the superb speaker plugs. It has a central grub screw and is even inscribed L.S. Does this particular kind of plug have a name?

Thanks.

[paulsherwin]

The plug in your photo is a Wander plug. It is an old British standard and very common on 50s British radios.

I can't help with the VHF socket. One of the holes is likely to be a Wander socket but I don't recognise the other one.

You can fabricate your own plugs using automotive split pins. If you know a mechanic, ask him nicely for a selection of sizes.

[G6Tanuki]

The smaller "Wander" plug can be replaced by one of these:

http://www.maplin.co.uk/p/maplin-4mm-plug-black-l20bh

[the dedign of the springy-bit means they compress enough to fit a standard Wander-socket unlike most other 4mm plugs].

Some designs of 4mm plug will also nicely fit the larger sockets used on quite a bit of 50s/60s gear; there's a design which has the pin slit lengthways and a S-shaped bronze springy-bit fitted to it that works well.

[60 oldjohn]

I think the VHF socket looks like it will take a standard "VHF" plug with pin dia 1/8 and 3/32, pin spacing 5/16 inch. Both pins 7/16 long. If this is correct I can let you have one for postage.

John.

[davidw]

The VHF pug you are looking for looks like this,its non reversable. Can't help with its official description, but someone will know.
Edit..like the one John describes.

[60 oldjohn]

Thank you Dave, that is what I am offering.
John.

[vidjoman]

These plugs had many uses. Used as mains voltage selectors, often mounted directly on a transformer. Similarly used as an impedance selector on output transformers. Often used as speaker sockets as well as FM aerial connectors. Guess it was just easier to use a readily available, low cost part than have something special.

[60 oldjohn]

Yes it is same size as the voltage selectors but this is a plug.
John.

[georgeek]

Originally Posted by 60 oldjohn

I think the VHF socket looks like it will take a standard "VHF" plug with pin dia 1/8 and 3/32, pin spacing 5/16 inch. Both pins 7/16 long. If this is correct I can let you have one for postage.

Thank you everyone and thank you John for the kind offer. Much appreciated.