Radios that work for Free

New Topic

21 topics • Page 1 of 1

Topics

Replies

Views

Last post

Half Crystal Radio, Half Regenerative Radio

Last post by Bubbathegimp « Tue Apr 25, 2023 1:00 am

by Bubbathegimp » Tue Apr 25, 2023 1:00 am

A rite of passage in decades past for the electronics experimenter was the crystal radio. Using very few components and a long wire antenna, such a...

0 Replies

129 Views

Last post by Bubbathegimp
Tue Apr 25, 2023 1:00 am
The Simplest Way To Spot 2.4GHz RF

Last post by IB4TL « Sat Oct 16, 2021 7:01 pm

by IB4TL » Sat Oct 16, 2021 7:01 pm

When the cool kids are showing off their SDRs it’s easy to forget that a radio receiver can be very simple indeed. The crystal set is one of the...

0 Replies

219 Views

Last post by IB4TL
Sat Oct 16, 2021 7:01 pm
Cheap DIY High Impedance Earphones

Last post by IB4TL « Thu Dec 03, 2020 11:30 am

by IB4TL » Thu Dec 03, 2020 11:30 am

Crystal radios can feel magical, given their ability to tune in audio from distant stations with nothing but the energy from the radio signal itself....

0 Replies

215 Views

Last post by IB4TL
Thu Dec 03, 2020 11:30 am
How Early Radio Receivers Worked

Last post by IB4TL « Fri Jul 10, 2020 1:01 pm

by IB4TL » Fri Jul 10, 2020 1:01 pm

If you’ve ever built a crystal radio, there’s something magical about being able to pull voices and music from far away out of thin air. If you...

0 Replies

255 Views

Last post by IB4TL
Fri Jul 10, 2020 1:01 pm
Hackaday Podcast 070: Memory Bump, Strontium Rain, Sentient Solder Smoke, and Botting Browsers

Last post by IB4TL « Fri Jun 05, 2020 12:01 pm

by IB4TL » Fri Jun 05, 2020 12:01 pm

Hackaday editors Elliot Williams and Mike Szczys bubble sort a sample set of amazing hacks from the past week. Who has even used the smart chip from...

0 Replies

222 Views

Last post by IB4TL
Fri Jun 05, 2020 12:01 pm
Credit Card Chip Used To Make Crystal Radio

Last post by IB4TL « Tue Jun 02, 2020 1:00 am

by IB4TL » Tue Jun 02, 2020 1:00 am

Perhaps the simplest radio one can build is the crystal radio. Using a diode as a detector, the design generally uses less than 10 components and no...

0 Replies

235 Views

Last post by IB4TL
Tue Jun 02, 2020 1:00 am
COVID-19 A Boon for Crystal Radio

Last post by Bubbathegimp « Wed Apr 01, 2020 8:00 am

by Bubbathegimp » Wed Apr 01, 2020 8:00 am

The COVID-19 Virus has proven to be a Boon to people interested in building Crystal Radio. Not only by finding more free time to build, But as Toilet...

0 Replies

1337 Views

Last post by Bubbathegimp
Wed Apr 01, 2020 8:00 am
A video

Last post by Bubbathegimp « Wed Mar 11, 2020 2:47 pm

by Bubbathegimp » Wed Mar 11, 2020 2:47 pm

0 Replies

799 Views

Last post by Bubbathegimp
Wed Mar 11, 2020 2:47 pm
Thinking about getting back into crystal radio

Last post by Bubbathegimp « Thu Feb 20, 2020 3:52 am
Replies: 21
by Bubbathegimp » Wed Jan 09, 2019 11:20 pm
1

2

3
Been a while since I fooled around with them. Still have a few spools of magnet wire from Radio Shack, A pair of old Magnetic Headphones,
And a Cats...
21 Replies

3324 Views

Last post by Bubbathegimp
Thu Feb 20, 2020 3:52 am
[Eric] Talks Crystal Radios

Last post by IB4TL « Tue Jan 28, 2020 10:00 pm

by IB4TL » Tue Jan 28, 2020 10:00 pm

The AM broadcast band doesn’t have a lot of mainstream programming on it across much of the United States today. That’s a shame because a lot of kids...

0 Replies

807 Views

Last post by IB4TL
Tue Jan 28, 2020 10:00 pm
radio building books.

Last post by Bubbathegimp « Sat Mar 09, 2019 3:34 pm
Replies: 4
by K9ase » Thu Mar 07, 2019 11:22 am

I've been watching various you tube videos on making crystal sets.
most of the books that get mentioned are out of production and/or close to $100...

4 Replies

1176 Views

Last post by Bubbathegimp
Sat Mar 09, 2019 3:34 pm
I guess size does matter!!

Last post by Bubbathegimp « Thu Feb 07, 2019 9:56 am

by Bubbathegimp » Thu Feb 07, 2019 9:56 am

I read a while back, That for a Performance set that wire gauge plays a role in performance, And that there was really not much of an advantage in...

0 Replies

759 Views

Last post by Bubbathegimp
Thu Feb 07, 2019 9:56 am
Beginnings of Radio

Last post by Bubbathegimp « Tue Jan 22, 2019 7:37 am

by Bubbathegimp » Tue Jan 22, 2019 7:37 am

0 Replies

871 Views

Last post by Bubbathegimp
Tue Jan 22, 2019 7:37 am
Crystal Radio Coil and Capacitor

Last post by W9FTV « Mon Oct 08, 2018 9:47 pm
Replies: 10
by Bubbathegimp » Mon Sep 24, 2018 10:59 pm
1

2
Theres a guy on E-Bay selling Diamond weave coils using 660/46 Litz on E-Bay.
I have heard of Spider Weave, But never heard of Diamond weave.

I do...
10 Replies

2079 Views

Last post by W9FTV
Mon Oct 08, 2018 9:47 pm
A Modern Take on the Crystal Radio

Last post by IB4TL « Fri Jan 19, 2018 7:00 pm

by IB4TL » Fri Jan 19, 2018 7:00 pm

We’ll admit that has a pretty standard design for a crystal radio. What we liked, though, was the 3D printed chassis with solderless connections . Of...

0 Replies

719 Views

Last post by IB4TL
Fri Jan 19, 2018 7:00 pm
Radio and Phone Speaker has Style

Last post by IB4TL « Wed Feb 22, 2017 10:00 pm

by IB4TL » Wed Feb 22, 2017 10:00 pm

Building a crystal radio isn’t exactly rocket science. Some people who build them go for pushing them technically as far as they can go. Others, like...

0 Replies

816 Views

Last post by IB4TL
Wed Feb 22, 2017 10:00 pm
High Impedance Headphones? They’re In The Can!

Last post by IB4TL « Sun Sep 18, 2016 4:00 am

by IB4TL » Sun Sep 18, 2016 4:00 am

likes to build crystal radios. The original crystal radio builders used high impedance headphones. In modern builds, you are as likely to include a...

0 Replies

739 Views

Last post by IB4TL
Sun Sep 18, 2016 4:00 am
High Performance Crystal Radio

Last post by IB4TL « Fri Sep 16, 2016 10:00 pm

by IB4TL » Fri Sep 16, 2016 10:00 pm

When you think of a crystal radio, you probably think of something simple maybe built out of household scraps. Not if you are . He recently posted a...

0 Replies

759 Views

Last post by IB4TL
Fri Sep 16, 2016 10:00 pm
PhD Crystal Radio has Pizza Capacitor

Last post by IB4TL « Thu May 26, 2016 4:00 pm

by IB4TL » Thu May 26, 2016 4:00 pm

Crystal radios are old news, but great fun. What would happen if a PhD designed a crystal set? By PhD we mean Pizza Hut Deliveryperson and (who may...

0 Replies

763 Views

Last post by IB4TL
Thu May 26, 2016 4:00 pm
Hacking When it Counts: POW Canteen Radios

Last post by IB4TL « Thu Apr 21, 2016 10:01 am

by IB4TL » Thu Apr 21, 2016 10:01 am

Of all the horrors visited upon a warrior, being captured by the enemy might count as the worst. With death in combat, the suffering is over, but...

0 Replies

822 Views

Last post by IB4TL
Thu Apr 21, 2016 10:01 am
Getting Serious about Crystal Radios

Last post by IB4TL « Thu Apr 07, 2016 10:01 am

by IB4TL » Thu Apr 07, 2016 10:01 am

The crystal radio is a timeless learning experience, often our first insight into how a radio works. For some of us that childhood fascination never...

0 Replies

734 Views

Last post by IB4TL
Thu Apr 07, 2016 10:01 am

New Topic

21 topics • Page 1 of 1

Return to Board Index

Who is online

Users browsing this forum: No registered users and 1 guest

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Forum permissions

Legend

Unread posts Unread posts
Unread posts [ Popular ] Unread posts [ Popular ]
Unread posts [ Locked ] Unread posts [ Locked ]

No unread posts No unread posts
No unread posts [ Popular ] No unread posts [ Popular ]
No unread posts [ Locked ] No unread posts [ Locked ]

Announce Announcement
Sticky Sticky
Moved topic Moved topic

Chicago	Kentucky	London	Paris	Berlin	Tokyo	Moscow	Beijing	Brisbane