## Recommended Posts

I was wondering: How easy would it be to make a radio at home with common materials? And how cheap? This radio would cover as many frequencies as possible...

And please, I don't know a lot of the things like "Use a ___ resistor," I'm not that much of an electronics person.

##### Share on other sites

a bit of magnet wire and a germanium diode.....or a piece of galena will make you a workable AM set.

##### Share on other sites

A simple AM radio is pretty cheap in terms of components, although if you want a fairly decent crystal radio you're gonna have to get stuck into some of the electronics a bit. I've found the easiest way to get involved and stuck in is to buy some of the 100-in-1 electronics kits where they have a bunch of stuff from integrated circuits to simple transistors etc that you can attach to eachother by using small bits of wire. They're great fun, cheap, and you can build a lot simple electronic circuits with them.

##### Share on other sites

I was thinking of transmitting and recieving, like from house to house.

##### Share on other sites
I was thinking of transmitting and recieving, like from house to house.

Try using two plastic cups and some string

##### Share on other sites

if you want to transmit as well, then youve got no chance without electronics knowledge

how far is the house? is it line of sight?

would you consider other means of comunication? Infrared or a wired intercom?

you could just buy some cheap walky talkies, and convert the antenna to match the frequency, thereby optimising its efficiency and boosting its effective range

and youde not be breaking any FCC regulations either

##### Share on other sites

Transmitter circuits are a bit more complicated than the receiver circuits as well.

##### Share on other sites
if you want to transmit as well' date=' then youve got no chance without electronics knowledge

how far is the house? is it line of sight?

would you consider other means of comunication? Infrared or a wired intercom?[/quote']

It's just down the street.

And by that scitoys page, it doesn't look too complicated to make an AM transmitter. All I need is the parts, and that's easy.

##### Share on other sites
And by that scitoys page, it doesn't look too complicated to make an AM transmitter. All I need is the parts, and that's easy.

that`s great from someone that stated from the start:

"And please, I don't know a lot of the things like "Use a ___ resistor," I'm not that much of an electronics person."

*Sigh*....

anyway, How did you get on with it?

##### Share on other sites

Never bothered. It was a good idea, but I never had the time.

I spend a lot of my time programming my calculator to do things, rather than building stuff.

##### Share on other sites
Transmitter circuits are a bit more complicated than the receiver circuits as well.

Actually, they're roughly the same, but fed backwards. In the case of the receiver, it's the antenna, a couple of conversions and a transducer (speaker) for audio.

In the transmitter, it's the transducer (microphone) a couple of conversions, and the same antenna.

1 or 2 watts is fine for house to house communications.

For a single frequency, you could have a high Q antenna.

Whats Q?

##### Share on other sites

Q normally referrs to charge

but does "a high charge antenna." sound right?

## Create an account

Register a new account