How to make a radio
in [Repair]
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From: ZZactly on 20 Oct 2009 02:16 Done that, back when I was about six. Big coil, cap, long wire antenna. A few have forgotten I think, no batteries. But an antenna can actually pick up power. You may tune the desired frequency for reception and feed it to headphones, but now I am thinking that the extra power coulod be used to run a local oscillator and then you have a hetrodyne reciever. Much better and easire to tune. Intersting. JURB
From: bw on 20 Oct 2009 03:23 "farzad Beheshti" <farzadbeheshti12(a)gmail.com> wrote in message news:f338ef88-f1dd-4783-9326-f9f2ae3754a9(a)j19g2000yqk.googlegroups.com... > > I want to make a simple radio(reciever), without using any IC and by > capacitor, inductor, transistor, diode and other simple electrical > device > Would you mind telling me how can I do that. Have you any reference > or do you know any website or group to help me > > Thank you. Check eBay for inexpensive AM radio kits. Radio shack sold many of these for kids in the 60s to 80s The kit includes all the needed parts mounted so that you only have to hook up wires between the parts. A small instruction book explains the basic operation.
From: Clint Sharp on 20 Oct 2009 03:50 In message <7k48t3F383ts8U1(a)mid.individual.net>, Adrian C <email(a)here.invalid> writes > >As a seventies kid here in the UK, we had the wonderful Ladybird book - >'Making A Transistor Radio'. > >http://www.theweeweb.co.uk/public/upclose.php?id=1663 Holy cr.. �40!!!! Wow, I better start digging out my old Ladybird books, I have that exact book somewhere. > >The TRF project was a short plank of wood, some screws and brass cup >washers, electronic bits and not a soldering iron in sight! My first transistor radio project, made me go all dewy eyed remembering that and building it with my grandfather. Thank you for posting that. > >Some related web sites on that. > >http://homepage.ntlworld.com/henry01/ladybird_radio/ladybird_radio.htm >http://www.mds975.co.uk/Content/trfradios02.html >http://thedomesticsoundscape.com/wordpress/?tag=ladybird-radio-book > -- Clint Sharp
From: Adrian C on 20 Oct 2009 13:31 Clint Sharp wrote: >> http://www.theweeweb.co.uk/public/upclose.php?id=1663 > Holy cr.. �40!!!! Wow, I better start digging out my old Ladybird > books, I have that exact book somewhere. Heh, that's nothing :-) Someone in the UK has it for sale on Amazon marketplace for �109! -- Adrian C
From: Jeroni Paul on 8 Nov 2009 17:39
On 8 Nov, 14:05, F Murtz <hagg...(a)hotmail.com> wrote: > I once received a radio station (near tower)with long aerial, an earth > to water pipe , one diode, and some magnetic earphones (the ones with > electric magnet and metal diaphragm) > No coils or capacitances or anything else. And not so near can still work with this simple setup using a cristal earphone. |