Identify STC radio
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Location: Hill Top, NSW
Member since 18 September 2015
Member #: 1801
Postcount: 2109
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I've got a STC radio in a wooden case and 4 white knobs. On the back it says Model -------- (in other words, it doesn't say).
I want to get a schematic because the local oscillator has failed.
Valves: 12AH8, 6BA6, 6N8, 6BW6, 6X4.
It has short wave, broadcast, and PU. There's tone, volume and tuning.
Any ideas?
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Location: Sydney, NSW
Member since 28 January 2011
Member #: 823
Postcount: 6797
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Location: Milton, NSW
Member since 27 June 2016
Member #: 1945
Postcount: 55
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The HSRA radio models spreadsheet lists the STC A2540 (1954) with that valve line up. The radio museum lists the STC Emperor A5240BB
as having a wooden case but no picture to confirm. The A2540 schematic is available from Kevin Chant's site:-
http://www.kevinchant.com/stc2.html
Joe
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Location: Hill Top, NSW
Member since 18 September 2015
Member #: 1801
Postcount: 2109
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Thanks for the suggestions. They led me to the A5240BC, although mine isn't red. The picture shows the sides as sloping but that is an illusion; the sides are straight.
I've downloaded the A5240 diagram from Kevin Chant, and when the laptop's battery charges up I'll go out to the workshop (garage) and begin the fight.
I'll get back with the results.
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Location: Hill Top, NSW
Member since 18 September 2015
Member #: 1801
Postcount: 2109
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The schematic allowed me to prove that the problem was caused by the number one issue on Australian multi-band radios - the band switch. After a while it started to conduct, and MW was working. SW only works with careful positioning of the switch.
Unfortunately the bad switch segment is under everything else and almost impossible to reach. It also took a while to get the thing back together too.
Anyway, at least it works on MW most of the time now.
There's what appears to be a price scribbled on the back - 34 pounds 13 shillings.
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Location: Sydney, NSW
Member since 28 January 2011
Member #: 823
Postcount: 6797
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I've been fooled for hours by a bad rotary switch. I now treat them as guilty until proved otherwise.
According to the Reserve Bank, £34/13/- in 1954 equates to $1,237 today.
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Location: Hill Top, NSW
Member since 18 September 2015
Member #: 1801
Postcount: 2109
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That's a lot of dough for an average quality radio. Most STC radios, certainly the later ones, are nothing special. Especially, the plastic cased ones are very susceptible to damage.
Fortunately the knobs are similar if not the same across the range.
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Location: Sydney, NSW
Member since 28 January 2011
Member #: 823
Postcount: 6797
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That's a lot of dough for an average quality radio.
The basic wage in 1954 was about £12/6/- so about 3 weeks wages to buy that radio. Many people would have bought radios on hire purchase.
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