Comments on: Catch some (radio) waves

By: Ham radio operator

Ham radio operator — Sat, 14 Apr 2012 02:34:17 +0000

It is a crystal radio. A crystal radio does not have a crystal.

By: Ham radio operator

Ham radio operator — Sat, 14 Apr 2012 02:33:14 +0000

The antenna has to be long for these frequencies or it will not receive any signals because most of the time if the receiving antenna is shorter than 1/4 wavelength on that frequency it will receive poor reception or no reception at all.

By: FarmBoy

FarmBoy — Mon, 02 Jan 2012 19:58:01 +0000

It is pretty cool. You have to take care of animals and cut alfalfa to make hay to feed horses and to use as bedding for dogs.

By: Red rose

Red rose — Wed, 28 Dec 2011 04:39:46 +0000

Is this different from a crystal radio? How

By: hammy

hammy — Fri, 04 Nov 2011 00:09:53 +0000

i saw that to

By: man

man — Tue, 25 Oct 2011 18:16:51 +0000

try wal-mart

By: Idaho Scouter

Idaho Scouter — Tue, 11 Oct 2011 05:21:46 +0000

Where do you get a IN34A diodes? Radio Shack doesn’t have them and the ones we find online are $0.30, but the shipping is ~$5. Being thrifty Scouts we are wondering where to obtain this diode or if the diode can be substituted with some other diode.

By: magicfreak

magicfreak — Sun, 31 Jul 2011 01:35:39 +0000

what do you do with the paper clip!?

By: magicfreak

magicfreak — Sun, 31 Jul 2011 01:30:50 +0000

epIc LoL XD

By: magicfreak

magicfreak — Sat, 30 Jul 2011 20:06:36 +0000

I think it would work better if you used an old metal shirt hanger for a antenna

By: scientist

scientist — Mon, 11 Jul 2011 14:27:23 +0000

it would work better if you had the
k3797 diodes.if you angle the batter 70 it will get better receptions. thats my way

By: shark

shark — Sun, 19 Jun 2011 21:21:56 +0000

i’m about to make one

By: iamcheif

iamcheif — Fri, 13 May 2011 03:27:57 +0000

WOW that was a mouth full radio receiver 332 lol

By: Mr.man

Mr.man — Tue, 14 Dec 2010 11:46:08 +0000

Great project im going to make one

By: OldScout

OldScout — Sun, 31 Oct 2010 06:48:33 +0000

added note…when the call letters of a radio station start with the letter W that means the station is East of the Mississippi River. If it starts with K then the station is west of the Mississippi River.

By: InVenTor

InVenTor — Thu, 08 Jul 2010 23:28:34 +0000

THis is an awesome project for a rainy day.

By: mason

mason — Tue, 02 Mar 2010 15:02:38 +0000

what is it like to live on a farm?Im alraedy working on the raidio.

By: Radio Receiver 332

Radio Receiver 332 — Wed, 12 Aug 2009 17:46:25 +0000

If you get noise on your radio headset, but no radio stations, use a metal paper clip to try to tune your hand built radio. Sometimes it helps to run a number 26 guage wire and connect it with a metal screen of a no longer used storm window (to enlarge the radio antenna receiving area). If you live on a farm and can receive AM Radio Stations on a battery operated portable radio, see how strongly the station broadcasts to the radio. Sometimes, radios in cars and table radios have stronger antenna receptions due to the design of the radio. If the storm window screen that is connected to your hand built radio is located off of the ground, the reception might be a little bit better. Some farms who receive AM Radio station programs have their table radios connected to antennas which are connected to Farm Towers that are taller in height than the chimney of the farm house or slightly taller than the grain storage containers.

By: fm lover

fm lover — Mon, 20 Jul 2009 21:30:18 +0000

how do you get fm stations

By: Rman7

Rman7 — Fri, 01 May 2009 20:23:13 +0000

I can’t get mine to work. I have looked over the instructions a million times and can figure out what I did wrong. I have the exact same materials as the instructions, and my wires are all connected to the right spot. I live on a farm, but I don’t think I am too far away to receive radio waves. I hear a noise in the headset, but no radio stations. Please Help Me!!!!!!!!!

By: taz

taz — Thu, 26 Mar 2009 19:38:26 +0000

it realy works thats awsesome!!!

By: Meggie

Meggie — Thu, 26 Mar 2009 00:32:10 +0000

THAT LOOKS COOL

By: freeback

freeback — Sun, 22 Mar 2009 16:16:03 +0000

THAT IS AWSOME! I’m going to try it!

By: legomaster

legomaster — Sat, 21 Mar 2009 21:39:19 +0000

I wonder if you can shirnk it and put it in a kart? Also, if you can get a sattlite dish(sorry, bad grammer) theat would be cool!!

By: justinator

justinator — Thu, 19 Mar 2009 15:22:48 +0000

cool, It sounds cool I’ll try it

By: shae

shae — Wed, 18 Mar 2009 13:28:11 +0000

Cool

By: Samson the Lake Trout

Samson the Lake Trout — Sun, 15 Mar 2009 19:22:36 +0000

This radio receiver that is built using a glue stick and some 26 guage wire and 22 gauge wire is a great school science fair project and also good for a merit badge. Does this radio receiver only receive one frequency of radio broadcasts or will it receive multiple frequencies when adding a metal paper clip radio tuner that comes into contact with the 26 guage wire? It’s great to listen to radio broadcasts with this type of receiver who announce their Federal Communications Commission Letter Identifications who broadcast over a specified geographical area in accordance to any particular FCC radio broadcast license grade (such as grade A,B, C, and so forth). Sometimes the radio broadcasts received on this radio will announce that the radio station is either W,_,_,_, or K,_,_,_. Thanks for a great school science fair project idea.

By: archer flame yoshi

archer flame yoshi — Tue, 09 Dec 2008 21:44:13 +0000

cool and not very expensive, realy works too!!!, but i havent had time to do it…YET.

By: Samonerd

Samonerd — Wed, 05 Nov 2008 19:12:43 +0000

That is AWESOMMMEE!!!!! That is like one of the coolest things that i would be able to make!

By: lobstapenguinman

lobstapenguinman — Sun, 02 Nov 2008 01:19:53 +0000

my dads a lobsterman and has a radio on his boat possibly i could call him

By: kj

kj — Mon, 24 Mar 2008 22:45:56 +0000

i think this game is great

By: fred fred burger

fred fred burger — Sun, 23 Mar 2008 17:52:18 +0000

I love to make stuff that is usefull and fun

By: I

Tue, 01 Jan 2008 21:54:15 +0000

This is cool, it reminds me of the war.

By: Im a ninja

Im a ninja — Tue, 27 Nov 2007 23:28:11 +0000

i made this for my science fair project and it worked!

By: Timmy

Timmy — Sun, 25 Nov 2007 01:41:00 +0000

Wow! What frequencies can you get?

By: 148100148

148100148 — Tue, 11 Sep 2007 03:45:25 +0000

sounds asome

By: studeahlic

studeahlic — Sun, 09 Sep 2007 02:22:41 +0000

I made one nearly like this while in the cub scouts (crystal set) some time in 1948. I still remember the 1st time I heard it play (Gene Autry show) some fifty nine years ago. thanks for the memory, DON

By: Taco94

Taco94 — Fri, 10 Aug 2007 01:09:49 +0000

I’m really interested in Ham radio and plan to get my liscense so I think that this will help me.

By: the matster

the matster — Fri, 03 Aug 2007 02:24:19 +0000

sounds really cool and fun definatly want to try it some time

By: me

me — Thu, 02 Aug 2007 01:22:37 +0000

cool

By: starfreak

starfreak — Wed, 01 Aug 2007 16:17:13 +0000

Can u get FM?

By: SuperToad

SuperToad — Tue, 31 Jul 2007 12:03:47 +0000

put one in the bushes, call your sister over, then turn it on. she’ll be scared out of hir wits! lol!

By: corky

corky — Sun, 29 Jul 2007 22:50:49 +0000

sounds like fun :

By: Derrick, Age 10, Florida

Derrick, Age 10, Florida — Thu, 26 Jul 2007 18:52:03 +0000

There was a project like this on display at my school science fair last year (4th grade) and I thought it looked really cool. I think I might try making this projcet myself and it would be neat to show my friends what it was like. The only problem with this project is that it sounds kind of tricky. Then again, my dad will probably agree to help me.

By: sean

sean — Thu, 19 Jul 2007 09:20:03 +0000

ben if your reading this they have foxhole radios during WWII simply a razor blade and a pencail with a10ft long pecice of wire and a headphones you rub the pencail over the razor blade and here a buzzing sound

By: speed297

speed297 — Thu, 05 Jul 2007 12:57:22 +0000

sounds hard,but I’m going to try it

By: j

Thu, 21 Jun 2007 16:01:15 +0000

i like it

By: mr ed

mr ed — Wed, 09 May 2007 23:50:12 +0000

i think radios are nice

By: turtle

turtle — Wed, 09 May 2007 23:48:39 +0000

i like radios

By: ben

ben — Sat, 05 May 2007 23:17:54 +0000

its impossel to find a simpler radio

By: Nutin

Nutin — Thu, 03 May 2007 00:21:12 +0000

I think it will be cheap easy and fun

By: bacon

bacon — Wed, 02 May 2007 19:04:18 +0000

i think ill try but i dont think it will be easy

By: cook me

cook me — Mon, 23 Apr 2007 22:45:36 +0000

challenging but cooooooooooooooooool !

By: billygoat5-40

billygoat5-40 — Thu, 19 Apr 2007 21:56:39 +0000

I try this how does it work

By: 50cent

50cent — Sun, 15 Apr 2007 23:31:24 +0000

I don’t like am radio isn’t there away to make fm radio????? =P

By: 50cent

50cent — Sun, 15 Apr 2007 23:28:54 +0000

very cool, i like istening to the radio so it will be fun i will teach my friends

By: radioman

radioman — Thu, 12 Apr 2007 18:38:55 +0000

this is soooooooooo cool

By: raidoman

raidoman — Thu, 12 Apr 2007 17:25:59 +0000

i like this project. i am going to try it later.

By: a

Sun, 08 Apr 2007 00:19:02 +0000

interesting…..yet complicated

By: jonathan3

jonathan3 — Fri, 06 Apr 2007 14:34:29 +0000

can you do it on the computer

By: cobalt

cobalt — Wed, 04 Apr 2007 23:48:20 +0000

confusing

By: moldy cheez

moldy cheez — Wed, 04 Apr 2007 00:15:40 +0000

i already know how to make a shortwave radio

By: lyr

lyr — Tue, 03 Apr 2007 15:51:44 +0000

wow!

By: kongfu master

kongfu master — Tue, 03 Apr 2007 12:23:42 +0000

how weird but i will try to make it.

By: Cajundweeb

Cajundweeb — Tue, 27 Mar 2007 01:46:26 +0000

Never thought about using an old telephone handset as an earpiece. Good to know!

By: Eli

Eli — Mon, 12 Mar 2007 18:10:30 +0000

I might already have the stuff to make it. The only problem is I have to find it…..

By: jlcusmc

jlcusmc — Wed, 07 Mar 2007 00:12:11 +0000

do i really have to do this

By: SKUPSKUP

SKUPSKUP — Mon, 05 Mar 2007 14:36:26 +0000

COOL!!!!!!!