carborundum crystal radio

British Crystal Sets - SparkMuseum

Kenmac Radio Ltd (British) 1925 J. Rigaut BCM Jr. 1924 Brownie Wireless 1923 J. Rigaut 1924 Gecophone No. 2 Type BC 1501 1922 MecoPhone Crystal 5xx c. 1923 Unmarked Marconiphone Crystal A 1922 Marconi 16 1915 Carborundum crystal receiver Acme

Radio Attic - Guide to listing prices for radios with …

2020/5/14· - Carborundum Crystal Radio (1918) - Sold June 4, 2018 by Buzz Stone - $175.00 - Cariola Phonograph (1930s) - Sold February 22, 2007 by Ben Martin - $45.00 - Case 710 Tostone (1936) - Sold Septeer 1, 2011 by Lew Magrish - $499

Radio Detector Development (1917)

Although progress in radio reception hit a plateau for a few years after the development of crystal detectors in the mid-1900s, in the mid-1910s important improvements in vacuum-tube design would lead to new electrical circuits and radio receivers that were much

- ,

(:quartz crystal unitquartz crystal resonator,Xtal),, (),,。、、、、。

Minerals - Crystal Radio

Minerals or crystals used in crystal radios. Crystal Radio web site. Crystal radio plans, crystal radio circuits, crystal radio schematics are all right here. Sound powered headphones and how to use them on crystal radios. Crystal Radios, Crystal Set, Crystal Sets

Fixed Detectors - Crystal Radio

Crystal Radio detectors fixed. Crystal Radio web site. Crystal radio plans, crystal radio circuits, crystal radio schematics are all right here. Sound powered headphones and how to use them on crystal radios. Crystal Radios, Crystal Set, Crystal Sets, swiskers

Crystal Radio Science Fair Project Guidebook

A crystal radio is made up of a tuning coil (magnet wire wrapped around a toilet paper tube), a detector (germanium diode) and crystal earphones, and an antenna wire. There is no amplifier, advanced circuitry, or power sources to get in the way of a satisfyingly

Detector - Carborundum Co., Radio Receiver, circa 1924

Summary Crystal detector, fixed type. Made by the Carborundum Co., Niagara Falls, New York, U.S.A. Used in radios. Physical Description Fibre tube with brass end caps, each fitted with a terminal. The tube has been sectioned to expose the insides, consisting

Crystal Detector: ''s Whisker Radio Detector » …

Also called the crystal detector it was an iconic component used in many early radio equipments. Today, many ''s whisker or crystal detectors sets can be seen on the antique and collectors market. In their day, the radios using the s'' whisker detector or the crystal detector performed well and for many years they were the main type of detector used in sets used for the reception of

Crystal set - Antique radio

With the exception of the carborundum crystal, the whisker wire should make very light contact with the crystal, working best when only just barely touching the surface. With the carborundum detector a very heavy pressure is required, which in itself is one reason for the stability of tke carborundum, as the heavy pressure prevents the displacement of the contact when subjected to vibration.

Radiokit - MSEVM

Главная > Radiokit > The Dunwoody high performance crystal radio kit U.S. Army Signal Corps General Henry H. C. Dunwoody received a patent for the carborundum crystal detector in 1906. This work paved the way for later crystal detector inventions. This fine

Borden Radio Company - Radio Kits and Designs for Old …

2019/9/22· Carborundum crystals are not affected by the heat that is inevitable with conventional mounted crystal detectors that are set in molten lead, but we mount them in low temperature alloy anyway because it is safer for us to use the lower temperature alloys.

Army radio communiion in the Great War Keith R Thrower, …

carborundum crystal. For transmission there was a single T.N. valve (seen mounted in the frame) and this was connected as an oscillator. It is believed that Marconi used this set for CW voice trials in 1914. It might have been possible to adapt this radio for use in

Fixed Detectors - Crystal Radio

Crystal Radio detectors fixed. Crystal Radio web site. Crystal radio plans, crystal radio circuits, crystal radio schematics are all right here. Sound powered headphones and how to use them on crystal radios. Crystal Radios, Crystal Set, Crystal Sets, swiskers

Radiokit - MSEVM

Главная > Radiokit > The Dunwoody high performance crystal radio kit U.S. Army Signal Corps General Henry H. C. Dunwoody received a patent for the carborundum crystal detector in 1906. This work paved the way for later crystal detector inventions. This fine

Radiokit - MSEVM

Главная > Radiokit > The Dunwoody high performance crystal radio kit U.S. Army Signal Corps General Henry H. C. Dunwoody received a patent for the carborundum crystal detector in 1906. This work paved the way for later crystal detector inventions. This fine

Carborundum Crystal Radio Diode Detector Stand Base …

2021/3/24· Carborundum Crystal Radio Diode Stand Pine Wood Base Brass Hardware Torsion Whisker. Crystal Radio Detector Stand and Crystal withNewly Designed Brass Fittings. This New Design uses a High Performance Germanium Biasing Diode to decrease the

Build an Antique Style Crystal Radio : 9 Steps (with …

Build an Antique Style Crystal Radio: I have, for some unknown reason, always been interested in ancient technology, mainly electronics and mechanical things and I have always wanted to make a true old fashioned style crystal radio. A crystal radio, or crystal set

1926 Carborundum Crystal Set | Radio

2016/4/16· 1926 Carborundum Crystal Set. Ninety years ago, the April 1926 issue of Radio In The Home magazine carried the plans for the “200 Mile” crystal set shown below. The author describes the set in the following terms: Many readers will be surprised to learn that a simple crystal set has given a fairly consistent nightly range of more than 200

Borden Radio Company - Radio Kits and Designs for Old …

2019/9/22· Carborundum crystals are not affected by the heat that is inevitable with conventional mounted crystal detectors that are set in molten lead, but we mount them in low temperature alloy anyway because it is safer for us to use the lower temperature alloys.

Army radio communiion in the Great War Keith R Thrower, …

carborundum crystal. For transmission there was a single T.N. valve (seen mounted in the frame) and this was connected as an oscillator. It is believed that Marconi used this set for CW voice trials in 1914. It might have been possible to adapt this radio for use in

Radio Attic - Guide to listing prices for radios with …

2020/5/14· - Carborundum Crystal Radio (1918) - Sold June 4, 2018 by Buzz Stone - $175.00 - Cariola Phonograph (1930s) - Sold February 22, 2007 by Ben Martin - $45.00 - Case 710 Tostone (1936) - Sold Septeer 1, 2011 by Lew Magrish - $499

Crystalradio

Crystalradio This article is about unpowered radio receivers. For crystal-controlled oscillators (as used in radios), see Crystaloscillator. “Crystalset”redirectshere.FortheAustralianrockband, seeTheCrystalSet. Acrystalradioreceiver,alsocalledacrystalsetor

Carborundum Crystal Detector Radio part Long Distance

Carborundum Crystal Detector Radio part Long Distance Wireless Instrument Company; Boston,, build 1909 ?, 9 imágenes, Estados Unidos, esquemas, válvulas Radios Foro

crystal radio | eBay

Carborundum Crystal Radio Diode Detector Stand Base Brass with Bias Diode. Brand New. C $27.52. Top Rated Seller. Top Rated Seller. or Best Offer. +C $33.62 shipping estimate. from United States.

The Complete Guide on How to Build a Crystal …

2013/1/3· A crystal radio is so simple that there are really only three possible things that could be wrong with it. I hope you''ve enjoyed this crystal radio tutorial! There are a lot of other tutorials out there, but none of them really explained the theory and concepts behind the radio as much as I wanted them to, which is why I incorporated that sf into my guide.

Borden Radio Company - Radio Kits and Designs for Old …

2019/9/22· Carborundum crystals are not affected by the heat that is inevitable with conventional mounted crystal detectors that are set in molten lead, but we mount them in low temperature alloy anyway because it is safer for us to use the lower temperature alloys.

crystal radio | eBay

Carborundum Crystal Radio Diode Detector Stand Base Brass with Bias Diode. Brand New. C $27.52. Top Rated Seller. Top Rated Seller. or Best Offer. +C $33.62 shipping estimate. from United States.

Carborundum Crystal Detector Radio part Long Distance

Marble based carborundum crystal detector by the Long Distance Wireless Instument Company. Invented in 1906 by Henry H. C. Dunwood y , this consisted of a piece of silicon carbide (SiC, then known by the trade name carborundum), either clamped between two flat metal contacts, or mounted in fusible allo y in a metal cup with a contact consisting of a hardened steel point pressed firmly against

The K6GBM Crystal Radio - ARRL

2 The K6GBM crystal radio is a classic design using old school construction techniques (see Figure 1). The circuit is laid out on a piece of wood using bright finishing nails as tie points. The coil is hand-wound on PVC pipe. The variable capacitor is a classic 365 pF