DIY Radio in less than 5 minutes!

Before everything goes digital, I'm going to show you how to make your OWN functional Speaker capable SW Radio in less than 5 minutes! Just watch, and I'll show you HOW to make your very OWN radio!.

All you need is the following (you can get it on eBay for less than 2 dollars if you shop around): 1x 100 ohm Speaker, 200k Resistor, LM741 Op-Amp (or compatible), 220uF Electrolytic Capacitor, 10 nF capacitor, 15 pF Capacitor and a 47 pF capacitor, a Small cheap BreadBoard + some standard 1-core wire for Breadboard (find this at RadioShack or somewhere else). And a 9 volt battery. The components aren't critical, meaning you can easily use 270K or 180K instead of 200k resistor, or 100uF to 400uF electrolytic capacitor etc. Just find what you have, and connect it as I did...and it'll work for you!

Category:

Science & Technology

Tags:

• DIY Radio
• how to make your OWN radio
• 5 minute radio
• electronics
• diy
• make your own
• make
• How to make your own radio
• SW radio
• Science project
• analog radio

[Jo0ngle]

There's a new video there now, it's a 1 minute DIY video with schematics and animations, look for it in my channel.

[peap90]

nice! do can you show me also the scheme?

[Jo0ngle]

@peap90,

I rarely use a schematics when I build simple stuff, it's just out of my mind as I know how these things work (well, at least practically), but I'm planning for a better video with schematics & more details in the future, so stay tuned.

[people709]

yeah my gramps defantly had a 1x 100 ohm Speaker, 200k Resistor, LM741 Op-Amp (or compatible), 220uF Electrolytic Capacitor, 10 nF capacitor, 15 pF Capacitor and a 47 pF capacitor haha but great video

[Jo0ngle]

@people709,

Haha, thanks ;) Well..maybe you gramps had something like my tube radio (look at the other video)? ;)

[mytube30590]

hi

can you tell me exactly how much the coil capacity in henry?

thank you for this video

[Jo0ngle]

@mytube30590;

I haven't measured or calculated it, so no...sorry ;) But maybe you can figure it out, it has about 63 windings, with a coil that is 0.70 mm diameter, around a 3 cm. plastic pipe? It also has 5 taps about each 10-13 winding.

[sami96sm]

Looks like you have evry thing :D

[CriticalRedEggman]

This is awesome. Almost magic!!! lol I love it, thanx man. I will try this.

[taverned]

I'm unfamiliar with the 'breadboard'. When you were pressing the components into the board, you were indicating numbers.... this pin goes to this number-this pin goes to that number... What exactly were you pressing the components into? Is this something that requires soldering at a later time? What band was that receiving and how can you get it to receive different bands?

[grimtango5280]

@ImSelfSchooling The point is not to have a radio but to learn how to make one. Most diy stuff will be more expensive than buying the real thing. They mass produce products which makes them cheaper.

[buzzyB25]

add it all up and it comes to £35.21 its so cheap

[CraigMcAllisterMusic]

What range of values does your variable capacitor cover ?

[scuzzcrow]

I am looking to find a major in college right now and am interested in DIY electronic work like this involving circuit boards and all the vernacular involved and am wondering where you obtained this knowledge and if it is possible to find a major in college involving these topics, any advice?

[NorsicanMenace]

Nice work, but the 741 op-amp has no independent diode, does it? Where in this circuit does detection take place?