Technical Details

The Astatic Corporation is a commercial audio products manufacturer founded in Youngstown, Ohio in In , two amateur radio operators, Creed M. Woodworth, W8AHW began experimenting with different types of microphones for their “ham” stations. Their mutual friend, Charles Semple, worked for Brush Development Company where he had been experimenting with Rochelle salt crystals. Semple demonstrated some crystal pick-ups that Brush was working with, leading Chorpening and Woodworth to found The Astatic Microphone Laboratory, Inc. Semple was brought into the company as general manager to manufacture and market the company’s model D Crystal Microphone as well as other crystal microphones, crystal phonograph pickups and recording heads. The company offers audio products for recording, live performance, commercial and personal audio, and is located in Solon, Ohio. DAS expanded the Astatic name to non-microphone accessories including coaxial cables, meters and antennas. Astatic also manufactured bullet style microphones, which are extremely popular among harmonica players.

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.

I discovered a couple of Astatic D Microphones. Mic connections and manuals for lots of radios –

Application September 27, , Serial No. This invention relates to microphones such as are used for radio broadcasting and public address purposes and which may frequently be used out of doors. The object of the invention is to devise special means to reduce the electrical or noise output of a microphone. In accordance with the main feature of the invention, a microphone is constructed so that none of its parts in the air path to its pressure sensitive electrical element has a cross sectional dimension substantially greater than.

The invention will be clearly understood from the following discussion of the problems to be met in windshielding and description of a preferred embodiment of the invention shown in the accompanying side view partly in cross section of a S. Such eddies having frequencies in the upper sound range are known as Aeolian tones, while in the lower range they are known as eddy tones. On the assumption that 15 M. It is proposed therefore to avoid any solid section having a cross sectional dimension substantially greater than.

At the other end of the sound range, the tones produced are known as eddy tones and such tones of frequency about 50 C.

Astatic JT-30 Harmonica Microphone Late 1940s Gray

Astatic D Microphone Head. Free shipping. Skip to main content.

MicrophoneBackgroundA microphone is a device that converts mechanical energy waves The ceramic or crystal microphone was invented by the Astatic.

Users browsing this forum: boxjoint, Google [Bot] , Jthorusen and 27 guests. Replacement Crystal Mic Elements? Posted: Jan Tue 28, pm. I just got my Grandparent’s old Silvertone wire recorder up and running. After going through all of the grief of recapping a cramped chassis, fabricating a new bracket for a modern phono cartridge, and resurfacing the three rubber idler wheels, I’d like to see all features completely functioning again.

That means getting the microphone to work. The microphone element is a long-dead crystal type by Astatic.

Astatic 636L Noise Canceling Microphone

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The Dynamic Microphone is based on the principle of magnetic induction, in which a wire moves across a magnetic field, The galleries are sorted both by polar response and manufacture date, if known. On right: Astatic Model (​date.

American and Japanese microphones from the past. Astatic – Shure – Piezo – Turner. American AH. American D7TP. More info can be found here. This model is one of the microphones that are nicknamed the “Salt Shaker”. It was introduced around , its frequency range is given as Hz. The D4 without a Transformer had an impedance of 30 Ohm.

The single contact models have a high impedance Ohm , the models with or Ohm had a balanced line output connector. A data sheet can be found here. Amperite Also known as PG Pressure Gradient microphone. Has an elipsoid pick up pattern. Astatic JTC.

US2263668A – Microphone support – Google Patents

The following mics are all suitable for use by harp players. I am not a mic builder. I do not install volume controls and normally do not do repaint jobs. If a volume control is working, I leave it alone, but if it is defective I remove it.

A range of amplified handheld microphones. When using a power mic in a vehicle you may pick up much more SOLD OUT – no delivery date This is the mobile equivalent of the famous Astatic Silver Eagle base mic, it’s ceramic mic.

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. I do know that the early models were made in Youngstown Ohio, and the later models were made in Conneaut Ohio. The end of the shells that are more pointed give them the appearance of being slightly shorter, whether they actually are or not. Whatever the case, I prefer the more pointed shells myself. You should be able to notice the bottom part of the shells, the part where the tags are attached, are deeper on the early models than they are on the later models too.

The new grilles being used on the latest version of the Blues Blaster seem to have lost almost all the detail, and are slightly deeper than the older grilles.

US2623957A – Microphone windshield – Google Patents

Do you remember the microphone from the 80’s? This new microphone from Superstar is very similar to it but from what I remember this one feels better made! A very unusual mic to look at, but when you get it in your hand it is surprising how comfortable it feels. You hold the mic like a “pistol”, and the PTT is the “trigger” that you press with your forefinger. The mic element is in the top of the mic, so just squeeze the trigger and talk into the top.

There is a small volume control on the front of the mic beneath the PTT, it does stick out and is wobbly but if you did not like it you could actually remove the plastic control and just adjust the pre-set with a screwdriver since once set to suit your voice and radio there should be no need to adjust it again.

Astatic L Noise Canceling Microphone IS the nations truckers choice and for a good reason. The industry standard for over 70 years Astatic l does the job right. The L is a noise Feedback, From Buyer, Date/time. Positive feedback​.

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US6075867A – Micromechanical microphone – Google Patents

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?

condenser boundary microphone with a programmable Astatic Commercial Audio Products hereby warrants that this product will be free of defects in material and Retain proof of purchase to validate the purchase date and return it with.

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.

Reginald A. RCA was destined by its very creation to dominate the Radio Industry.


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