Astatic D104M6B-DX1 Radio Microphone
Astatic has no information concerning the serial numbers or the dates of mics, but we can, with a little detective work get some approximations. The first clue is that the element had a date stamp in the early models. In other cases we have actual purchase dates for a small number of mics from eBay. We know that Astatic moved to Conneaut, Ohio from Youngstown before Rivets on the label is also a clue to age. Astatic stopped using labels in the 80’s and stamped the side of the shell with JT Then stopped using any marks at all.
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series ASTATIC mini-gooseneck microphones as well as any other miniature You should retain proof of purchase to validate the purchase date and return it.
As early as , Fessenden had been experimenting with mechanical transmitters – high frequency alternators – as a source of a pure continuous wave carrier for voice transmissions. In Dec. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden could voice modulate the alternator’s output. The system was demonstrated on December 21, Fessenden then decided to test broadcast a short voice and music program on Christmas Eve. The broadcast consisted of violin music played by Fessenden and recitation of Bible passages.
Though the program was a test, it was picked up by some shipboard radio operators around Cape Cod, Massachusetts. Fessenden repeated the broadcast program on New Year’s Eve, At the time, very little was mentioned of Fessenden’s two pioneer broadcasts and they were almost forgotten. However, letters from Fessenden preserved the experiment which is now considered one of the important events in radio history.
Though Fessenden had successfully demonstrated the concept of broadcasting, he was actually more interested in providing point-to-point voice communications and, as a scientist, he preferred to continue on with this and his other radio developments and inventions. He eventually retired to Bermuda.
US6075867A – Micromechanical microphone – Google Patents
The present invention concerns a micromechanical microphone with a housing in which a transducer element is placed, and which has a sound inlet on one side of the transducer element and a pressure compensation hole on the other side. Primarily the pressure compensation hole has a high acoustic impedance at audio frequencies, and is placed in a, in other respects, closed rear chamber. The transducer element normally consists of a membrane which deflects due to the sound pressure, and an arrangement to convert this deflection into an electrical signal.
Commonly known microphones of small dimensions, as of the magnitude 3. In the past, many different prototype microphones have been fabricated using micromechanics which is a technology based on advanced silicon integrated circuit manufacturing concepts but used for the fabrication of mechanical components.
These elements came in the Shure and D microphones, among others. Shure , and the Astatic MC element that came in the JT is that both mics are shure crystal elements number 99b94 dated fl (dec.
I started out with a Shure 55A, still the pride of my collection, and went on from there. I now have over 20 vintage microphones dating from the s to the s or so. There’s so little information available to the vintage mic collector, I’ve found. I have not come across a decent book on the subject, which surprises me because there seem to be quite few collectors around. None of my mics are for sale and I’m not really in the market for more right now, but I’m always interested in learning more about these objects and the history of the companies that made them.
Shure Brothers got started in the early ’30s in Chicago. In Shure introduced the 55 series of Unidyne microphones designed to limit feedback problems with a true cardoid response profile. The 55 series is still in production. When people think of a vintage microphone, this is usually the one they mean. Big and silver, the 55 is a true American icon. I have a ish 55A, the low impedance version.
US2263668A – Microphone support – Google Patents
Astatic D Microphone Head. Free shipping. Skip to main content. Email to friends Share on Facebook – opens in a new window or tab Share on Twitter – opens in a new window or tab Share on Pinterest – opens in a new window or tab. Add to Watchlist. People who viewed this item also viewed.
30, MICROPHONE WINDSHIELD William Donald Cragg and Michael Lawrence UNITED STATES PATENTS Number Name Date , Thorne Aug. USA * Astatic Corp Cardioid microphone.
Original Poster – Salaar Iftikhar.
Astatic 636L Noise Canceling Microphone
Above: The Astatic D, their most iconic and most widely-available model. Astatic Corp was based on Conneaut Ohio for many years. Although they primarily produced microphones for voice-frequency communications work, they also made higher-fidelity models which are much less common. Anyone out there using any of the higher-fidelity vintage Astatic models for music production work?
Drop us a line and let us know…. Click this link for my previous posting of the earlier Astatic Microphone Catalog.
The Astatic Corporation is a commercial audio products manufacturer founded in Youngstown, Ohio in Astatic formed CAD Professional Microphones in as a division of Astatic in · establishments in Ohio. Hidden categories: Commons category link from Wikidata · Use dmy dates from July
A microphone is a device that converts mechanical energy waves or sound into electrical energy waves. Speaking into a microphone excites moves a diaphragm that is coupled to a device that creates an electrical current proportional to the sound waves produced. Microphones are a part of everyday life. They are used in telephones, transmitters for commercial radio and television broadcast, amateur radio, baby monitors, tape recorders, motion pictures , and public address systems.
There are many different types of microphones—the design depending upon the application. Sound recording, radio and television, and motion picture studios use ribbon or condenser type microphones because of their high quality reproduction of sound. Public address systems, telephones, and two-way radio communications systems can use carbon, ceramic, or dynamic microphones because of their versatility and low cost.
The first microphone was invented as a telephone transmitter by Alexander Graham Bell in It was a liquid device that was not very practical. In , Thomas Alva Edison invented the first practical carbon microphone. The carbon microphone was used for radio transmissions and extensively in telephone transmitters until the s when they were replaced by piezoelectric ceramic elements.
The carbon microphone had a limited frequency range, and would not reproduce music effectively.
Astatic 302-AST878DM Amplified Ceramic Desk CB Microphone
I believe this one may have been a special version offered to Shure executives upon the introduction of the in mid The element in this mic is dated June The tag is navy blue with embossed lettering. I have no idea who the original owner was but I do know who it will be buried with! My personal collection of mics and elements consists of about 30 microphones which are mostly Shure bullets, and some of the various models of the Astatic JT30 which have different model numbers from the early Astatic years.
You may be able to see the subtle differences between the various models, or maybe not.
It was described by Shure as being a high output microphone with good response, Some elements of the same model # and even the same date code will have some Both the early Shure and Astatic mics had Brush Co. stickers on them.
File:Vintage Astatic Silver Eagle Microphone (14763565067).jpg
The d microphone that I bought for the eBay could not have been a better microphone I’ve got real good reports from it it’s very clear I will buy another one if I need one the people that packed the microphone that I actually sold the microphone did an excellent job of packing could not have been better I’m very happy with my purchase I’ll certainly do it again if I need one.
Verified purchase: Yes Condition: Pre-owned. I have used Astatic Mic’s since the early seventy’s. The quality of sound has been one of the best for my hobby.
Buy Astatic B Cardioid Condenser Hanging Choir Mic – Equitek Capsule for Extended Frequency Response: Musical Date First Available, July 2,
Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community. Please make sure that you’ve entered a valid question. You can edit your question or post anyway. Please enter a question. Astatic microphones are engineered to surpass all stock mic options, providing superior sound quality for CB, Amateur, and Single Side Band communications.
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