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Testing 1 2 3...

Testing 1-2-3, a term heard regularly over a p.a. system whenever a sound check is made from a micophone. This part of our website looks back through the technicial develpoments that have taken place during 2AD's 75 years of broadcasting.

 

From the Start... the Valve Era

Before the start of 2AD, listeners in the New England region were poorly served, especially in summer when the atmospheric conditions made listening a nightmare rather than a pleasure. Many locals told of how it was common practice for radio sets to be placed in “cold storage” for the simple reason that reception was almost impossible.

For this reason, before 2AD opened in 1936, one area of the station’s operations to receive a great deal of attention was the transmitting equipment, read more here...

 

The Arrival of the Transistor

To many listeners the word transistor will bring to mind their very first trannie or portable radio from the early 1960's. However the term transistor more correctly refers to a semiconductor device used to amplify and switch electronic signals.

The transistor is regarded as the fundamental building block of modern electronic devices, and is considered by many to be one of the greatest inventions of the 20th century. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits, along with diodes, resistors, capacitors and other electronic components, to produce complete electronic circuits.

Following its release in the early 1950s, the transistor revolutionized the field and paved the way for smaller and cheaper broadcasting equipment which started to be in use at 2AD from the early to mid 1960's. read more here...

 

The Digital Age

The Digital era - Computers had been around since the 1940's, they are digital devices based on the binary number system, where a binary bit is either ON or OFF (1 or 0). The advent of the microprocessor first manufactured in 1971 by Intel, allow the computer to become available to the general public. Within ten years, an explosion of small and inexpensive personal computers had changed the Radio industry.

2AD's first digital device was a Harris all-solid-state medium wave broadcast transmitter. Which used an Intel 8 bit microprocessor to control the transmitters power output and monitor its performance status. Its was just the beginning …read more here...