Loft find radio ID? Identified as a Graves Vulcan. - UK Vintage Radio Repair and Restoration Discussion Forum

DustyBox · 25th Jul 2020, 12:32 pm

This two valve set (valves missing) was found in a loft recently. I'm hoping someone out there might be able to identify it.

Apart from the labels on the transformer there are no manufacturers' labels, parts or serial numbers. The dial labeled 'strengthen' swings a shaft that moves a coil over two
fixed coils in the cabinet and I guess it's varying the mutual inductance of the coils and adjusting selectivity. The circuit is 'hard wired', the valves' wiring sandwiched between two wooden boards. I've not yet attempted to work out the circuit diagram, maybe something to do in the winter months.

Any ideas as to the origin or age of the receiver?

Cobaltblue · 25th Jul 2020, 12:45 pm

Looks Like a Version of the Graves Vulcan

I will just check.

OK here's the link

https://www.radiomuseum.org/r/graves_vulcan.html

Cheers

Mike T

HamishBoxer · 25th Jul 2020, 1:05 pm

Yes,Graves came to me too before I moved to your post Mike. Possibly late 20's early 30's.

60 oldjohn · 25th Jul 2020, 1:07 pm

Well done Mike, 13 minutes and a spot on answer, as usual. That Radio Museum has an interesting link to the Wireless World publish date nearly 93 years to the day.

John.

Cobaltblue · 25th Jul 2020, 1:15 pm

Sorry I was busy

Cheers

Mike T

Gridiron · 25th Jul 2020, 1:29 pm

Graves Vulcan, second version of 1927, I think. There was a Wireless World review of it, not sure in which issue. The first version had "Vulcan JGG" on the front panel, later versions don't have this.

60 oldjohn · 25th Jul 2020, 2:03 pm

Quote:

Originally Posted by Gridiron

Graves Vulcan, second version of 1927, I think. There was a Wireless World review of it, not sure in which issue.

#2 and #4,
July 23 1927.

John.

25th Jul 2020, 12:32 pm	#1
DustyBox Diode Join Date: Jul 2020 Location: Brighton, East Sussex, UK. Posts: 1	Loft find radio ID? Identified as a Graves Vulcan. This two valve set (valves missing) was found in a loft recently. I'm hoping someone out there might be able to identify it. Apart from the labels on the transformer there are no manufacturers' labels, parts or serial numbers. The dial labeled 'strengthen' swings a shaft that moves a coil over two fixed coils in the cabinet and I guess it's varying the mutual inductance of the coils and adjusting selectivity. The circuit is 'hard wired', the valves' wiring sandwiched between two wooden boards. I've not yet attempted to work out the circuit diagram, maybe something to do in the winter months. Any ideas as to the origin or age of the receiver? Attached Thumbnails

25th Jul 2020, 1:05 pm	#3
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,935	Re: Loft find radio ID? Yes,Graves came to me too before I moved to your post Mike. Possibly late 20's early 30's. __________________ G8JET BVWS Archivist and Member V.M.A.R.S

25th Jul 2020, 1:15 pm	#5
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,879	Re: Loft find radio ID? Identified as a Graves Vulcan. Sorry I was busy Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

25th Jul 2020, 1:29 pm	#6
Gridiron Heptode Join Date: Apr 2010 Location: West Midlands, UK. Posts: 663	Re: Loft find radio ID? Identified as a Graves Vulcan. Graves Vulcan, second version of 1927, I think. There was a Wireless World review of it, not sure in which issue. The first version had "Vulcan JGG" on the front panel, later versions don't have this.

25th Jul 2020, 12:45 pm	#2
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,879	Re: Loft find radio ID? Looks Like a Version of the Graves Vulcan I will just check. OK here's the link https://www.radiomuseum.org/r/graves_vulcan.html Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk Last edited by Cobaltblue; 25th Jul 2020 at 12:47 pm. Reason: Added link

25th Jul 2020, 1:07 pm	#4
60 oldjohn Dekatron Join Date: Dec 2004 Location: East Yorkshire, UK. Posts: 3,989	Re: Loft find radio ID? Well done Mike, 13 minutes and a spot on answer, as usual. That Radio Museum has an interesting link to the Wireless World publish date nearly 93 years to the day. John. __________________ My favourite text message "I'll be there in five minutes, if not read again" Last edited by 60 oldjohn; 25th Jul 2020 at 1:18 pm.