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Posted: 3/12/2007 10:21:25 AM EDT
[Last Edit: 4/6/2007 7:20:47 PM EDT by piccolo]
Radio building contest:

Build a workable radio from scraps and scratch...

must not use batteries or AC.

no going to Radio Shack or elsewhere for parts,

creativity and imagination get points.

submit here and I'll pick a winner.


also, all parts must be accounted for as far as to where they came from.



the winner wins some kind of trophy that I will either scrounge or build from parts!



get on it! I'll judge around April 15th if someone reminds me.

ETA an extra 10 points for any GI overseas that builds a working set.
Link Posted: 3/12/2007 10:50:23 AM EDT



What do I win?
Link Posted: 3/12/2007 11:16:27 AM EDT

Originally Posted By divkat9:
www.moonbattery.com/archives/tinfoil_hat_antenna.jpg


What do I win?


Nothing, you can get those at radio shack.
Link Posted: 3/12/2007 11:30:34 AM EDT

Originally Posted By jmarkma:

Originally Posted By divkat9:
www.moonbattery.com/archives/tinfoil_hat_antenna.jpg


What do I win?


Nothing, you can get those at radio shack.


Eh, you're right I think that guy works part time at the one down the street, the dish is the dead give-away, yep that's him.
Link Posted: 3/12/2007 11:30:42 AM EDT
tag, for shits and giggles. Don't know if i'll be partaking on the competition. Jsut curious to see what all pops up.
Link Posted: 3/12/2007 3:11:55 PM EDT
OK, night crew.

Whadda ya gonna do if YOUR B-24 gets shot down and YOU can't have any news, weather and sports?
Link Posted: 3/12/2007 3:21:14 PM EDT

Originally Posted By piccolo:
Radio building contest:

Build a workable radio from scraps and scratch...

must not use batteries or AC.

no going to Radio Shack or elsewhere for parts,

creativity and imagination get points.

submit here and I'll pick a winner.


also, all parts must be accounted for as far as to where they came from.



the winner wins some kind of trophy that I will either scrounge or build from parts!



get on it! I'll judge around April 15th if someone reminds me.

ETA an extra 10 points for any GI overseas that builds a working set.


Does using a potato, or an orange count as battery?

What about wires and things purchased many moons ago for other projects that are on-hand? Are those permissible. I have a bunch of magnet wire that I bought from Radio-shack to build solenoids and an LVDT. Can I use that wire, or do I need to scrounge in the gutters for wire?

Dave.
Link Posted: 3/15/2007 2:03:28 PM EDT
Well, my phone speaker is broke. I thought the circuitry was shot, but it was the earpiece itself. I've got an earpiece on order though...that would be a tough item to find locally.
Link Posted: 3/16/2007 4:01:51 PM EDT
[Last Edit: 3/16/2007 4:03:29 PM EDT by ArimoDave]

Originally Posted By NAM:
Well, my phone speaker is broke. I thought the circuitry was shot, but it was the earpiece itself. I've got an earpiece on order though...that would be a tough item to find locally.


Make one. That is what I'm attempting to do. I don't want to take my phone apart, and I don't have a crystal earphone either.

I would think that having to buy parts is a disqualification---Is it? ? ?

Piccolo, care to make a ruling on that?

ETA:


no going to Radio Shack or elsewhere for parts,


Dave.
Link Posted: 3/16/2007 4:06:34 PM EDT
Now, is it nothing we can buy at Radio Shack, or just that we have to scrounge parts?
Link Posted: 3/16/2007 4:08:51 PM EDT
I have enough old electronics to possibly pull this off. Sounds like a foxhole radio (crystal). Hmmm...tagged.
Link Posted: 3/16/2007 4:10:17 PM EDT
Some HAM is going to beat me to the punch on this, I just know it.


Link Posted: 3/16/2007 4:16:37 PM EDT

Originally Posted By SubnetMask:
Some HAM is going to beat me to the punch on this, I just know it.




Is that a disqualification? :-P
Link Posted: 3/16/2007 4:18:03 PM EDT

Originally Posted By NAM:

Originally Posted By SubnetMask:
Some HAM is going to beat me to the punch on this, I just know it.




Is that a disqualification? :-P


It oughta be.

I'm not a HAM, and all I've got laying around are old CB's, tons of misc crap, and Business Band UHF radios that don't work anymore.
Link Posted: 3/16/2007 4:19:10 PM EDT
Hmmmm..

Your earlier foxhole radio thread got the gears turning then..
Link Posted: 3/16/2007 4:19:29 PM EDT
I will flat out state that I have to Google some of this. Full disclosure, and all that.

It'll be bubba'd for sure though, don't you worry about that.
Link Posted: 3/16/2007 4:21:00 PM EDT
Someone should cross-post this in SF. I know ar-jedi will probably have one done in a day.
Link Posted: 3/16/2007 4:26:55 PM EDT
Allright, I've Googled the snot out of this. There are a million ways to pull this off. I'll try and be creative, since I get the general principles now.

What a cool idea.
Link Posted: 3/16/2007 4:28:49 PM EDT
Tag.

This should be an interesting thread.


-T.
Link Posted: 3/16/2007 4:32:34 PM EDT

Originally Posted By SubnetMask:
I'm not a HAM, and all I've got laying around are old CB's, tons of misc crap, and Business Band UHF radios that don't work anymore.



You've already got more spare parts right there.


fwiw, im more less in it for shits and giggles.... and to break up the monotony here. Not really competing.
Link Posted: 3/16/2007 4:35:39 PM EDT
I've got all the parts, and none of which cost me anything---they were all laying around. I'm not going to cheat by using a radio crystal, I'm making one.

If you missed one of Piccolo's earilier threads where he made a crystal radio from essentially scratch, then you don't realize his intent with this one. It is to make a working crystal radio without going and getting parts. I'm not to sure how he will rule on canablizing radios for more sophisicated parts, though.

Dave.

P.S. SubnetMask, did you find the guy's website who is trying to build 100 of these things. Some of his are pretty impressive, but most require store-bought parts, like Litz-wire.

Link Posted: 3/16/2007 4:36:44 PM EDT


I just chiselled this out of a piece of firewood and metal I smelted from old tubing.

Wow I really suck at lying.

Link Posted: 3/16/2007 4:43:41 PM EDT

Originally Posted By ArimoDave:
P.S. SubnetMask, did you find the guy's website who is trying to build 100 of these things. Some of his are pretty impressive, but most require store-bought parts, like Litz-wire.



No I didn't, but I don't want to go to the store. I don't really want to think of this as a "competition", since pic ain't gonna give up anything REALLY cool.

I'm really getting into this, the more I read. My head is spinning with ideas. In fact, I feel like I have *too* much available too me. I've read some POW stories, and if THEY can pull it off, I can ease up on canibalizing solid state parts out of my modern radios, you know? I dunno, we'll see.

I really want to keep in the spirit of the thread and the whole "improvised" theme, and forcefully restrict myself to what I have laying around the house. I'm not going to bust out my soldering iron (no electricity, after all), and I'm not going to rip crystals out of anything.

I'm gonna have a blast tonight and tomorrow. Thanks piccolo (and I mean that)!
Link Posted: 3/16/2007 5:12:05 PM EDT
Hey Pic,

I have a big bag of electronics parts in my dorm from Radio Shack from a couple years ago, from a project I never did. Can I use those, or is that cheating?
Link Posted: 3/16/2007 5:25:14 PM EDT
I found some directions online from a vet on how to make a headphone from C-rats.

But he said they carried a spool of magnet wire to make them. Interesting design though...
Link Posted: 3/16/2007 5:45:18 PM EDT
Hmmm

1. I have a high impedance crystal earphone, but I'm not sure if I wanna use it.
2. For the detector, I *could* cheat and cannibalize a diode out of something around here, but I think I'll see if I can't just make one. I don't have a safety razor blade (I'm out, and it would require a trip to the store...) or thick enough pencil lead.

This should be fun.

I *do* have a few hundred feet of Cat 5, so the antenna is going to be a snap.
Link Posted: 3/16/2007 6:28:11 PM EDT
Scrounged most of my components, cut a base... I just might win teh prize. Or not. Dunno.
Link Posted: 3/16/2007 6:44:13 PM EDT
Am or fm? Which band? I gotta know what parts bin to start in.....
Link Posted: 3/16/2007 7:32:21 PM EDT
[Last Edit: 3/16/2007 7:44:13 PM EDT by piccolo]
OK, the general idea here is to show some ingenuity.

See what you can do.

Don't look at it like a contest, make it a challenge.

When I say don't go buy something, I mean that I don't really want to see someone whip up a radio from a kit.

Hell, I traded a coffee and doughnut for my magnet wire (because I was too tired/lazy/beat to go dumpster diving for old motors and transformers.)

I used an old set of headphones I had kicking around, but as soon as I get motivated, I'm going to try make a speaker.

The whole spirit of this project is to get off your ass and DO something primitive,creative and FUN.

Hell, you can use what you can get your hands on. Old radios? Sure, why not!
The average foxhole radio parts came out of knocked out vehicles and commo gear. BHuy a headset or earphone if you want.

But if you have a really neat idea and need an inexpensive part or 2, go ahead and buy it.

When I had this brainstorm, I didn't want it to turn into:
1. A big money contest
2. a kit building contest.
3. a mirror repro of something you dug up on Google.

What I was and AM hoping for is a display of cleverness, ingeniuity, resourcefulness, with a touch of crackpot.

OTOH, if you decide to go the foxhole route, do it anyway and HAVE FUN and enjoy yourself.


As for AM band or FM, you call it. Let's see what you got!

BTW, any of you guys going the Crystal route, better get yourselves a HIGH IMPEDENCE earphone somewhere.

I give points for originality, resourcefulness, shadiness(as in swiping a part or 2 from the enemy, whoever he/she is), cleverness, and a lot of intangibles.

Making me laugh is certainly worth something!


(The spirit of it is the USGI field improvising spirit, be it a grunt wanting a baseball score or a POW wanting to get some news)

In short, no kits, keep it cheap and have fun.


Link Posted: 3/17/2007 5:48:51 AM EDT

Originally Posted By NAM:
I found some directions online from a vet on how to make a headphone from C-rats.

But he said they carried a spool of magnet wire to make them. Interesting design though...


I had a guy tell me about a crystal set he had made as a kid where one set the whole assy in a metal mixing bowl and viola.. Sound. No idea how it works, but I'm sure the knowlege is out there.

The magnet wire shouldn't be hard though.. Any burned out motor has tons.
Link Posted: 3/17/2007 6:02:04 AM EDT
radio shack doesn't have shit anymore, so anything is probable!

I'll disqualify myself (Extra Class Ham, FCC licensed, Engineer in the field, etc....)
Link Posted: 3/17/2007 11:56:42 AM EDT

Originally Posted By RED_5:
radio shack doesn't have shit anymore, so anything is probable!

I'll disqualify myself (Extra Class Ham, FCC licensed, Engineer in the field, etc....)



How can I build a speaker out of a tin can lid?
Link Posted: 3/18/2007 11:30:28 AM EDT

Originally Posted By piccolo:

Originally Posted By RED_5:
radio shack doesn't have shit anymore, so anything is probable!

I'll disqualify myself (Extra Class Ham, FCC licensed, Engineer in the field, etc....)



How can I build a speaker out of a tin can lid?


Directions for building a speaker from a tin can, some wire, a small magnet, and a nail here near the end of the page.
Link Posted: 3/20/2007 7:17:59 PM EDT
bump.

Who is in on this?
Link Posted: 3/20/2007 7:23:12 PM EDT

Originally Posted By piccolo:
bump.

Who is in on this?


I am if the deadline isn't too close - I've got more pressing business with my Dad's degenerating health for now. I checked out the lead/Galena mine last week, and it's going to be easy to get in, or it will if I go before the weeds get high. I'm going to bum some old carbon phones off his bench.
Link Posted: 3/20/2007 7:27:23 PM EDT

Originally Posted By piccolo:
bump.

Who is in on this?



I just have to go watch Stalag 17 first

Link Posted: 3/21/2007 7:14:07 PM EDT

Originally Posted By AeroE:

Originally Posted By piccolo:
bump.

Who is in on this?


I am if the deadline isn't too close - I've got more pressing business with my Dad's degenerating health for now. I checked out the lead/Galena mine last week, and it's going to be easy to get in, or it will if I go before the weeds get high. I'm going to bum some old carbon phones off his bench.




see if you can snag me a couple galena crystals. I remember 3 ways, razor blade,diode and crystal. I'd like to go the Xtal route for radio #3.

time to get a cat whisker and tickle a rock.
Link Posted: 3/22/2007 5:22:38 PM EDT

Originally Posted By piccolo:

Originally Posted By AeroE:

Originally Posted By piccolo:
bump.

Who is in on this?


I am if the deadline isn't too close - I've got more pressing business with my Dad's degenerating health for now. I checked out the lead/Galena mine last week, and it's going to be easy to get in, or it will if I go before the weeds get high. I'm going to bum some old carbon phones off his bench.




see if you can snag me a couple galena crystals. I remember 3 ways, razor blade,diode and crystal. I'd like to go the Xtal route for radio #3.

time to get a cat whisker and tickle a rock.


If I have luck finding galena, there will likely be enough for everyone that wants a piece.
Link Posted: 3/22/2007 5:25:53 PM EDT

Originally Posted By NAM:
tag, for shits and giggles. Don't know if i'll be partaking on the competition. Jsut curious to see what all pops up.


me too
Link Posted: 3/22/2007 5:45:56 PM EDT
Link Posted: 3/22/2007 6:05:26 PM EDT
i'm still in, but mostly for shits and giggles. gonan have to wait a bit. My hands broke out in a rash, and have peeled and generally been itchy and sore as hell. Happened the last time i was over here too, and they never did figure out what caused it. wrapping wire with layers of skin missing isn't all that fun.

On the plus side, i've got no fingerprints for the time being.
Link Posted: 4/1/2007 4:35:11 AM EDT
Any entries ready?
Link Posted: 4/1/2007 5:23:08 AM EDT

Originally Posted By divkat9:
www.moonbattery.com/archives/tinfoil_hat_antenna.jpg


What do I win?


Ok first, those voices you're hearing are not coming from that satellite!

Second, I think you're about to have an aneurysm.

Link Posted: 4/4/2007 6:39:43 PM EDT
Anyone still in on this?

Any entries?
Link Posted: 4/4/2007 6:53:58 PM EDT
[Last Edit: 4/4/2007 6:55:20 PM EDT by NAM]

Originally Posted By piccolo:
Anyone still in on this?

Any entries?


Sat outside for abotu 15 minutes setting up and playing with the graphite/razor.

definitly got some static, but no signal. After 15 minutes, i had to leave....the only open area to set up a decent antenna, and with a decent ground, was between the garbage pit and the sewage tanks.

I did get ahold of a diode, which might give me more luck. I'll try again when i get a day off, or some spare down time.
Link Posted: 4/4/2007 6:59:33 PM EDT
Has anyone asked what the prize is?
Link Posted: 4/4/2007 7:34:43 PM EDT

Originally Posted By MALT0SE:
Has anyone asked what the prize is?




Yeah. An all expenses paid 6 month carribean cruise, a new Ferrari and $375,000 cash


Or

Whatever rusty piece of junk I can make some sort of a half-assed trophy out of.

<­BR>





­

<­BR>

my choice.
Link Posted: 4/6/2007 7:14:58 PM EDT
Went by Piccolos underground --eh-hm "lab" today and got some photos of this creation, which actually works quite well.

withe either headphones or this little speaker he has cooked up


he even cooked up a homemade pair as headphones


in an unrelated story this man:

is apparently wanted in connection with a missing truckload of tuna fish that dissappeared from a local Giant Eagle grocery store. He was last seen driving away in the tractor trailer wearng dark sun glasses with a coon skin cap and waving a blind mans cane out the window while singing the Marine Corps hymm at the top of his lungs.
Giant eagle has offered a homemade radio as a reward for info.
Link Posted: 4/6/2007 7:33:27 PM EDT
Both the headphones and the speaker work pretty good.

The headset actually sounds pretty good, but only with either the TV or a real radio. Both require a bit more oomph than a crystal set produces.

I would NOT try using either of them with anything that used no/very little power.

It is astonishing what you can do with junk and some inagination.

I've got about 2500 feet of 40 awg wire coming and I'm going to try again with that.

I THINK impedence is important here and I figues that 40 awg is ABOUT 1 ohm/foot. We'll see what happens.

FWIW, NONE of the things I've heard and tried that supposidly worked for GIs in Vietnam have worked for me. Makes me wonder about the person that posted it.


If anyone out there has any ideas, let me know.


Pic, out.
Link Posted: 4/11/2007 10:02:12 PM EDT
Any entries?
Link Posted: 4/12/2007 9:57:54 AM EDT
I wonder how hard it would be to try powering one off a homemade battery.
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