galena crystal detector (2023)

Overview of forums radio configuration

12 Post • Page:1von1

Galena-Kristalldetektor

galena crystal detector (1)voncwsout» On, November 03, 2001 17:59:30

Hey guys;
For purely antiquarian purposes I am building an antique style crystal
detector for my set.

Does anyone have a photo of such a detector or a drawing of how to attach one
Electrode on PbS disk (galena)?

I wanted to use silver epoxy to attach a wire and then assemble the crystal
in a brass setting.
I could plate one copper. I am not sure.

The mustache consists of a stainless steel spring wire attached to a brass wire.
mandatory charge.
(Trying to find some old needles from 1978 was a failure.)

Thanks in advance. "73"

Clark Southoff
Calgary, Alberta

Principal

Galena-Kristalldetektor

galena crystal detector (2)vonMyron A Calho» On, November 3, 2001 20:06:58


>I'm building an old-style crystal for purely antiquarian purposes
>Detector for my device.
>Does anyone have a picture of such a detector or a drawing of how to attach one
> Electrode for PbS part (galena)?

Everything I've ever owned has been "wrapped" in metal that looks/feels/scratches
like lead. A spring clip holds the lead piece in place so the "trigger"
can feel around the crystal.

- Miron.
--
Five boxes guard our freedoms: soap, ballot, witness, jury and cartridge
Doctor EE (retired). Tenor "Barber Shop". CDL(PTX). W0PBV. (785) 539-4448
NRA Life Member and Certified Instructor (Home Firearm Safety, Rifle, Pistol)

Principal

Galena-Kristalldetektor

galena crystal detector (3)vonLook at the reply address and take N» On, November 3, 2001 21:16:39



> >For purely antiquarian purposes, I'm building an old-style crystal
> >Detector for my device.

> >Does anyone have a picture of such a detector or a drawing of how to attach one
> >electrode for PbS piece (galena)?

> Everything I've ever owned has been "embedded" in metal that looks/feels/scratches
> like lead. A spring clip holds the lead piece in place so the "trigger"
> can grope the crystal.

> - Miron.

(Video) Galena crystal radio with cat whisker nanodetector

The easiest bet will be to find a real stone support. You can have
at AES http://www.tubesandmore.com or if you want real vintage
try Gary at PTOP http://www.oldradioparts.com ($30 min order!)
-Invoice

Principal

Galena-Kristalldetektor

galena crystal detector (4)vonBob Cam» On, November 03, 2001 21:36:36

Hello,

If you want to do it yourself, here's more or less what you do.

Most homemade brackets had three or four brass screws protruding from the sides of a brass ring. You would more or less pinch the crystal in the middle of the ring. Galena isn't that difficult, so getting the cuff pressure right is a matter of trial and error. It's a good idea to have something extra on hand before you start.

The probe needs to be very sharp. You also need a reasonable way to adjust the pressure. The traditional way was to bend the spring. They don't need a lot of pressure, so there's no need for a huge spring.

What you're trying to do is create a small p-n junction at the tip of the mustache. Little pressure and you have no real contact with the region. Too much pressure and the crystal shards are more likely to go into p-n mode. A low current/low voltage ohmmeter can be a useful tool to have with you when practicing correct. You want one that outputs around 200mV or more and has a 10 meg ohm scale.

On the terminal side you want to make sure you don't have a semiconductor. Again, the ohmmeter would be a good tool to find out if you did it right.

Of course, there is the time-honored method of just playing with it until it works or you give up.

I hope it helps

Bob Camp
KB8TQ


Hey guys;
For purely antiquarian purposes I am building an old style crystal detector for my set.

Does anyone have a picture like a detector or a diagram of how to connect an electrode to the PbS disk (galena)?

I wanted to use silver epoxy to attach a wire and then mount the crystal in a brass holder.
I could plate one copper. I am not sure.

The mustache consists of a stainless steel spring wire attached to a brass clamp.
(Trying to find some old needles from 1978 was a failure.)

Thanks in advance. "73"

Clark Southoff
Calgary, Alberta

Principal

Galena-Kristalldetektor

galena crystal detector (5)vonChristopher Mc Nab» So, 04.11.2001 03:12:50

I found a place online that sells 78rpm needles (needed some for mine
spin 78 RPM). Can't remember where it was, but look for Victrola needles
or engrave needles or the like. You will find.

>Hello everyone;
>I'm building an old-style crystal for purely antiquarian purposes
>Detector for my device.

>Does anyone have a picture of such a detector or a drawing of how to attach one
> Electrode for PbS part (galena)?

> I wanted to use silver epoxy to attach a wire and then mount the crystal
>em Messingfassung.
>I could plate on a copper. I am not sure.

>The mustache is made from a stainless steel spring wire attached to a brass
> binding contribution.
> (Trying to find some old needles from 1978 was a drag.)

> thanks in advance. "73"

(Video) CRYSTAL RADIO: FREE ENERGY SOURCE??

>Clark Southoff
> Calgary, Alberta

Principal

Galena-Kristalldetektor

galena crystal detector (6)vonJi» So, 04.11.2001 09:16:20

When I was a kid, a long, long time ago, we used a circle cut from a
piece of copper pipe. Take a 3/4 inch long tube and cut several sections
1/2 inch deep at one end. two fastening tabs have been bent out of the cut
Sections for secure attachment. The other sections were folded into
give a floor. That leaves you with a 1/2 inch copper mug.
two folded flaps at the bottom. Grind your galena to fit the space
circumferential ring and a groove for a secure hold. heat it all up with a
light and fill with solder to the top, leaving the tip of the galena
stay out.
The cat's mustache is a safety pin (remember that?). it works perfectly.

Principal

Galena-Kristalldetektor

galena crystal detector (7)vonpau» So, 04.11.2001 05:11:33

To quote:> Does anyone have a photo of such a detector or instructions on how to make it
> attach an electrode to the PbS disk (galena)?

> I wanted to use silver epoxy to attach a wire and then mount the crystal
> em Messingfassung.
> I could plate one copper. I am not sure.

> The mustache is made from a stainless steel spring wire attached to a hook
> Fixing post in brass.
> (Trying to find some old needles from 1978 was a drag.)

Hi Clark,
The following books contain all the information to build Xtal detectors:

1. High Power Wireless Devices - Practical Electricity Industry Articles
1910-11
2. The Best of the Electrical Experimenter 1916-1917

both above reprinted by Lindsay Publications Inc.

3. The first radio wave detectors V J Phillips Publ. Peter Peregrinus GmbH 1980
ISBN: 0 906048 24 9
(and you just wouldn't believe some of the detectors described here - like
through wires connected to their teeth and detection by taste changes............!!!!)

Another one of those useless facts that gets into the brain and stays there is something
I once saw how the very fine end of a cat's whisker can be
done using wire as a terminal in a crude electrolytic cell. tip
can't remember but someone might - Scientific American Amateur
Scientific article ????
--
***
GM0MNL

Principal

Galena-Kristalldetektor

galena crystal detector (8)vonPeter J. Bertin» Sun Nov 05 2001 09:24:22

Galena ore is usually mounted on a piece of wood metal, which has a melting point below boiling water. Trick melting spoons were made of the same material and sold in shit stores many years ago. You can buy socketed galena ore from merchants or craft a simple tong to hold the ore.

Don't use anything sharp and hard like a phono needle to probe the ore, this is good for silicon detectors. Galena is soft and you'll quickly spoil sensitive areas with something this hard. Look for a thin brass wire and ask a pig to examine the surface. Many hardware stores sell fine brass picture wire, which is ideal for this purpose. It may be necessary to clean the galena with a little pure powder if the sample is old to remove oxidation before it works.

Peter


Hey guys;
For purely antiquarian purposes I am building an old style crystal detector for my set.

Does anyone have a picture like a detector or a diagram of how to connect an electrode to the PbS disk (galena)?

(Video) Vintage Crystal Radio Demo

I wanted to use silver epoxy to attach a wire and then mount the crystal in a brass holder.
I could plate one copper. I am not sure.

The mustache consists of a stainless steel spring wire attached to a brass clamp.
(Trying to find some old needles from 1978 was a failure.)

Thanks in advance. "73"

Clark Southoff
Calgary, Alberta

Principal

Galena-Kristalldetektor

galena crystal detector (9)voncwsout» Sun Nov 05 2001 19:45:47

I want to thank all the answers.
I found some information in a museum. I have to find the time to go
and pick it up.
When I'm done I'll find a website to publish it.

thank you again
73
Clark Southoff

Galena Ore is usually mounted on a piece of Wood Metal that has a
Melting point below that of boiling water. Trick Melting Spoons were created
made of the same material and sold by ***Shops for many years. You can buy
Assembled Galena Ore from vendors, or you can create a simple clamp to hold it
the ore. Don't use anything sharp and hard like a phono needle to probe
the ore that is good for silicon detectors. Galena is soft and you will be
quickly ruin sensitive areas with something so hard. look for some
thin brass wire and make a pig arrangement to probe the surface.
Many hardware stores sell fine brass wire for pictures.
ideal for the purpose. It may be necessary to clean the galena with something neat.
*** if the sample is old to remove oxidation before running.
Peter

Hey guys;
For purely antiquarian purposes I am building an antique style crystal
detector for my set.

Does anyone have a photo of such a detector or a drawing of how to attach one
Electrode on PbS disk (galena)?

I wanted to use silver epoxy to attach a wire and then assemble the crystal
in a brass setting.
I could plate one copper. I am not sure.

The mustache consists of a stainless steel spring wire attached to a brass wire.
mandatory charge.
(Trying to find some old needles from 1978 was a failure.)

Thanks in advance. "73"

Clark Southoff
Calgary, Alberta

Principal

Galena-Kristalldetektor

galena crystal detector (10)vonmercado» Di, 06.11.2001 00:13:28

Speaking of Oxidation: Used to craft "crystal" detectors with a rusty thumbtack. It worked incredibly well.

Galena ore is usually mounted on a piece of wood metal, which has a melting point below boiling water. Trick melting spoons were made of the same material and sold in shit stores many years ago. You can buy socketed galena ore from merchants or craft a simple tong to hold the ore.

Don't use anything sharp and hard like a phono needle to probe the ore, this is good for silicon detectors. Galena is soft and you'll quickly spoil sensitive areas with something this hard. Look for a thin brass wire and ask a pig to examine the surface. Many hardware stores sell fine brass picture wire, which is ideal for this purpose. It may be necessary to clean the galena with a little pure powder if the sample is old to remove oxidation before it works.

Peter


Hey guys;
For purely antiquarian purposes I am building an old style crystal detector for my set.

Does anyone have a picture like a detector or a diagram of how to connect an electrode to the PbS disk (galena)?

I wanted to use silver epoxy to attach a wire and then mount the crystal in a brass holder.
I could plate one copper. I am not sure.

The mustache consists of a stainless steel spring wire attached to a brass clamp.
(Trying to find some old needles from 1978 was a failure.)

Thanks in advance. "73"

(Video) Crystal Radio Sets from 1920s & 1930s

Clark Southoff
Calgary, Alberta

Principal

Galena-Kristalldetektor

galena crystal detector (11)vonFrank A. Scaraglin» Fr, 16. November 2001 01:50:10

I made one with a safety pin, graphite and a copper coin.
(rusty)
franco

Principal

Galena-Kristalldetektor

galena crystal detector (12)voniva» Fri, 16. November 2001 17:27:28

Hey guys,
so as not to confuse things:
The original crystal detector used a galena crystal. it was later
replaced by a Cuprox detector based on Cu2O copper semioxide. I have
an old Cuprox detector called "Sirutor" somewhere in my cabin. This
contains 4 or 5 small pills of oxidized copper. Cuprox rectifiers have been
also widely used in AC meters before germanium and silicon diodes came along
em be.
Making a Cuprox cell can be quite simple: take a piece of copper foil
(no alloy!), clean well and heat the red with a gas flame
bright. The surface turns black - covered with CuO copper oxide. To bend
the sheet back and forth a little: the black oxide falls off and shows
the red copper semioxide Cu2O. Extend a piece of clean steel wire (in the shape of a
spring) in contact with it. Yes, the spring is a pole, the copper one
sheet the other. The cell should have rectifying properties if possible
low voltages. Play!

BR de Ivan

Principal

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