LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #3   Report Post  
Old January 12th 05, 11:38 AM
ShortwaveMan
 
Posts: n/a
Default

That sure brings back some memories S. I made one with a piece of Galena and a cat whisker and a headset. I didn't have any tuning, just a wire for an antenna and a wire to connect to ground - and it worked ! Later I got a diode, as that seemed to work better, but I also managed to get a transistor to work as detector as well simply by the way the leads were connected. It was great fun experimenting. Dad bought me one similar to what you describe, but it was red and white plastic in the shape of a rocket, and it had a metal rod that you could push in or pull out to tune. It had a piece of germanium that slid in and out of a coil. Your son would love it s.mm

Peace +

"Ron Hardin" wrote in message ...
We used to build them with 1N34A diode, capacitor across the headphones,
and a coil wound on a toilet paper tube, with taps on the coil
that you'd clip an allegator clip to, for tuning.

Assemble atop wooden board.

There were some with an actual cat whisker instead of the diode,
but we went the modern way mostly.

The project is mostly winding the coil, many turns of enameled wire,
and scraping bits of it clear of enamel for the allegator clip
landing spots.

Another tuning method was a slider over the coil but it never
seemed like that would be very easy to get to work reliably.

Antenna and ground across the live portion of the coil.
--
Ron Hardin


On the internet, nobody knows you're a jerk.
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Drake TR-3 transceiver synthesizer upgrade Gene Gardner Homebrew 2 January 15th 04 02:17 AM
Drake TR-3 transceiver synthesizer upgrade Gene Gardner Homebrew 0 January 13th 04 05:28 PM
Crystal Oven Pinout Hans Summers Homebrew 0 November 17th 03 02:57 PM
Crystal Oven Pinout Hans Summers Homebrew 0 November 17th 03 02:57 PM
Please help id crystal holders Michael A. Terrell Boatanchors 1 October 4th 03 05:31 AM


All times are GMT +1. The time now is 12:17 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017