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Return to top of page · Post #: 1 · Written at 11:49:00 AM on 13 March 2014.
	Mike Hawkins Location: Hobart, TAS Member since 13 October 2013 Member #: 1430 Postcount: 25
Good morning all, Can anyone through some light on this radio, it is an S.B.R Ondolinette 331, circa 1941, 3 band 3 valve superheat, AC/DC for 127 volt mains. Valve line-up is an EK32 (not original) an EF9 and a CL4. The rectifier valve has been replaced with a selenium rectifier that has been purpose built to plug into the valve base. underneath the chassis is another valve? I am sure that this set has been 'got at' and is not original, a circuit diagram would help. Regards Mike

Return to top of page · Post #: 2 · Written at 3:50:17 PM on 13 March 2014.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5254
I would beware of it until I found a circuit, one of those not mentioned valves may be a Baretter. Irrespective of that. The chassis is probably live and the danger of electrocution real. If you use a stepdown transformer make sure it is not an auto transformer as they provide no isolation. Marc

Return to top of page · Post #: 3 · Written at 4:29:09 PM on 13 March 2014.
	Gfr53 Location: Harston, VIC Member since 28 February 2009 Member #: 442 Postcount: 145
G'day, Some information of this radio is on radiomuseum at this addy http://www.radiomuseum.org/r/sbr_331.html. Cheers, Graham...

Return to top of page · Post #: 4 · Written at 9:16:31 PM on 13 March 2014.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5254
Rather, confirms what I thought. Safe in its case, death trap for the unwary when out of it. Marc

Return to top of page · Post #: 5 · Written at 7:57:25 AM on 14 March 2014.
	Brad Administrator Location: Naremburn, NSW Member since 15 November 2005 Member #: 1 Postcount: 7301
It does look like someone has got at it at some stage. European radios are notoriously complex though I doubt they were fitted with Australian-made condensers and the placing of that valve under the chassis looks iffy. Watch out for that rectifier too. Live chassis or not, the top connection will bite if fingers wander. Radios generally were not fitted with festoon lamps either although if the one fitted there is the correct voltage and current rating it is probably a better choice as they throw off a better light for that situation. ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ A valve a day keeps the transistor away...

Return to top of page · Post #: 6 · Written at 11:02:30 AM on 14 March 2014.
	GTC Location: Sydney, NSW Member since 28 January 2011 Member #: 823 Postcount: 6687
Personally, I'd categorise that set as "display only".

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