Scott's Electronic Parts
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For Sale Simple Crystal Radio Kit Parts
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I now have for sale severial Simple Crystal Radio Kits. These Crystal Radio Receiver kits now come with coils with taps. My Kit #1 has one tap on the bottom of the coil for connecting a antenna no need to wrap wire around the coil for a antenna connection. The other Simple Crystal Radio Kit #2 has a tap towards the bottom and a center tap. The bottom connection is for the antenna and the Center connection gives better selectivity at a slight loss in volume. The top connection gives most volume but selectivity is reduced a little. Crystal Radio Kit #3 has no taps on the coil.
These are Simple Crystal radio kits ( Xtal Radio Kits ) and are easy to build. These Crystal Radio Receivers tune the AM Radio Band.
The Simple Crystal Radio Set Kits ( Xtal Radio Set Kits ) requires some soldering of the fine wires from the Ferrite Loopstick Antenna Coil the the variable capacitor. So Adult Supervision is advised for younger builders.
Learning how to build a Crystal Radio Receiver is a great way for anyone to get started in the electronic field. Great for Science Fair Projects and Boy Scout projects. The Simple Crystal Diode Radio Sets we have for sale are a fun way for the family to spend time together. As a child I made Crystal Radio Receivers out of things I find in old scrapped Radios and TVs. Most had no tuning capacitors. I had to tune in stations by sliding a ferrite rod in and out of the tuning coil. I would spend days trying different items to use as a detector instead of a diode, some worked but most did not. Anyway I had fun learning. Buy one of our Crystal Radio Kits for hours of fun and learning.
Crystal Radio Set Kits are sometimes called Xtal Radio Set Kits and Crystal Diode Radios.
The Components we supply in Each Simple Crystal Radio Kit are:
1-1N34A Germanium Diode ( Crystal Diode Detector )
1 47K resistor
1- .001 Capacitor
1- Ferrite Loopstick Antenna Coil ( Crystal Radio Coil ). Coils vary with kit.
1- Variable Capacitor
1- Ceramic Earphone ( Piezoelectric Earphone , Crystal Earphone ).
You have to make and mount to a board yourself . The kits do not come with antenna or ground wire.
Picture of the parts for the Simple Crystal Radio Kits. The only difference between these kits are the coils. Since most people will not be using an antenna around 100 ft. long I have made up a kit with no coil taps. It uses the round rod coil instead of the flat bar coil.
Below are the three Crystal Radio Kits I have for sale. View the two PDF files to determine the set you want.
Simple Crystal Radio Kits
This Kit has one Tap on the Crystal Radio Coil near ground for the Antenna Connection.
Dave Farrell purchased this kit for his
Elementary School Class
on Crystal Radios. He says the kids loved it. Here is a Power Point
Presentation on there project and how they assembled there Crystal Radio
Kit. Also contains some theory on how a Crystal Radio works
purchased this kit for his Elementary School Class on Crystal Radios. He says the kids loved it. Here is a Power Point Presentation on there project and how they assembled there Crystal Radio Kit. Also contains some theory on how a Crystal Radio works Crystal-Radio-Sets.ppt
Below is a picture of the assembled Crystal Radio Kit number CRK1 we have for sale. This is just a simple way to mount the components I used a clear contact glue to glue the coil and Variable Capacitor in place I also put a little glue on the Ferrite Rod to keep it from falling out. I was able to solder the lower antenna tap to a fahnestock clip. You can use other means for an antenna connection. Instead of writing pages on how to build the Crystal Radio Kit I think if you are like me you assemble things from the pictures anyway before you read the directions. The thin wires from the coil are hard to see but look at the two prongs from the Variable Capacitor. The wires from the coil are fairly long so I bunched them up and placed them under the coil leaving enough wire so that if one broke I could re solder it.
Click on the picture for a larger view of the Crystal Radio Kit. The Fahnestock Clips and Knobs are not supplied with the kits I have for sale. I have them for sale at the bottom of this page. Or you can go to my " Home Page " to see other items I have listed to buy.
Simple Crystal Radio Kit #CRK-1
This Crystal Radio Kit Replaces The Kit SC-Kit-1, same parts only the coil now has a tap and the 60/160pf capacitor is now 60/141pf a better fit for the coils used and has the same pin connections.
Click here for Simple Crystal Radio Kit CRK1 Circuit Diagram Crystal Radio Schematic # 1.pdf
Simple Crystal Radio Kit #CRK-2
This Simple Crystal Radio Kit has two Taps on the coil one for the Antenna and the others you can select for best performance.
Click here for Simple Crystal Radio Kit CRK2 Circuit Diagram Crystal Radio Schematic # 2.pdf
Simple Crystal Radio Kit #CRK-3
Click on pictur for larger view
The coil in this crystal radio kit has no taps on it and uses the round rod ferrite coil. Since most people will not be using an antenna around 100 ft long this radio kit has no taps on the coil for the extra long antenna.
Click here for Simple Crystal Radio Kit CRK2 Circuit Diagram Crystal Radio Schematic # 3.pdf
You can Buy Knobs for the Variable Capacitors in my Crystal Radio Kits below.
The Knob below it is about 5/8 inch in diameter. About
the same size as a Dime.
Fits All My Poly Variable Capacitors.
The Knob below is 13/16 inch in diameter. About the same
size of a Nickel.
Fits All My Poly Variable Capacitors.
Solder Lugs Fit Number 6 Screws Matte Nickel Plated Brass.
Matte Finish Increases Solder ability.
Type A Solder Lugs Matte Finish For Number 6 Screw 7/8 Inch Long.
Type B Solder Lugs Matte Finish Number 6 Screw 5/8 Inch Long.
The 788uh Litz wire coil listed below has taps at center and 680uh about 10 turns from end.
Part # LSA788-1, 788uh Loopstick Antenna Coil Price $2.47 Each.
The 680uh Litz wire coil below has tap at 470uh about 20 turns from end.
Part # LSA680-470-1, 680uh Loopstick Antenna Coil with tap at 470uh Price $2.47 Each.
Part # LSA680RR-1, 680uh Loopstick Antenna Coil Round Rod Price $2.47 Each
Select Values And Purchase Below.
Contact Me At firstname.lastname@example.org
|MK484 Radio Kits|
|Dual 335pf-20pf Poly|
|Magnet Wire Hook Up Wire|
|Fahnestock Clips Solder Lugs Resistors Capacitors|
|3N211 Dual Gate|
|MFE201 Dual Gate|
|3SK88 Dual Gate|
|40673 Dual Gate|
|BF960 Dual Gate|
|BF961 Dual Gate|
|BF998 Dual Gate|
|Super Bright LED's|
|LM3914 LED Driver|