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| To: | "[email protected]" <[email protected]> |
|---|---|
| Subject: | Re: LF: OT: Headphones |
| From: | M0FMT <[email protected]> |
| Date: | Sat, 28 Jan 2012 13:49:50 +0000 (GMT) |
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| In-reply-to: | <1327757183.1862.13.camel@g4gvw-high-grade> |
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Pat in those days they were refered to a Crystal triodes!
73 es GL Pete M0FMT IO91UX
From: pat <[email protected]> To: [email protected] Sent: Saturday, 28 January 2012, 13:26 Subject: LF: OT: Headphones Reminds me that I was once (during a Test Match series) very popular at school for having a home-brew 3-transistor MW/LW radio built into a Woolworth's plastic sandwich box. Reason for choice of box? - It had a circular vent grill exactly the right size to accomodate one of those DLR earphone transducers used as a speaker. Quite a group of boys could gather round and listen to scores etc. Also box could be installed between a couple of book covers and carried around with other volumes quite surreptitiously. Happy days! P.S. Transistors in those far-off days were sold to little boys by colour-spot designation -not numbers like OC71 etc -- 73 es gd dx de Pat G4GVW, Nr Felixstowe, East Coast, UK |
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