This ‘Atomic Age’ Raytheon T-100-2 was manufactured in the USA in 1955/56. This was Raytheon’s second transistor radio and their first pocket size (coat pocket) radio. Raytheon only produced transistor radios for one year. Its dimensions are 3.3" X 6.3" X 2.0" inches (86 x 162 x 51 mm).

The below advertisement for the T-100 appeared in a June 6 1956 edition of the Deseret News.

 Give Dad a Pocket Size

Transistor Radio


battery extra

NO TUBES! Tiny, tough, long lived transistors replace ALL tubes.

Small enough to be lost in your inside pocket - loud enough to fill a large room with rich, full toned sound!

Compact and handsome in two tone combination - a gift Dad will enjoy, will carry along everywhere he goes!

A miracle radio by Raytheon - the worlds largest manufacturer of transistors.

Nothing down $1 a week.

Paris Appliances  





This handsome Raytheon T-100-2 features one of the most memorable logos ever produced – a blazing thermonuclear atom fused with the words ‘Raytheon Transistorized’. The brass tuning dial looks like a valiant viking shield with prominent CD marks in red. The plastic 'lattice work' speaker grill is a nice addition. There is a brass clip on the side where the 'wrist chain' originally hung. These radios used a chain rather than a leather strap. 

Both the T-100 and the T-150 share the same cabinet with small cosmetic differences.

Raytheon was founded in 1922 and began specializing in the production of vacuum tubes and other electronic devices. In 1940 Raytheon began defense contracting for the British and US Governments and were pioneers in the development of subminiature tubes that were initially used in missiles and later in hearing aids and small portable radios. Defense contracting paid well for Raytheon, a company that had only $3 million in sales before the war, by wars end annual income had risen to $173 million!

Raytheon began producing transistors in 1949 but it wasn’t until 1952 that the company began mass producing them. At this time Raytheon began touting transistors as an alternative to the subminiature tubes currently in use in hearing aids. So the first commercial product to use transistors was the hearing aid.

In 1953 Raytheon released the worlds first commercially available transistor, the CK722 initially sold for $8.00 and was popular with experimenters. Raytheon continued defense contracting during the Korean War and in 1956 sold its radio and television divisions to the Admiral Corporation.

Today Raytheon employs over 72,000 people and they are the fifth largest defense contractor in the World.

REF: 'The Portable Radio in American Life’  by Michael Brian Schiffer.







This Raytheon T-100 has a serial number of 33465. Stamped inside the battery compartment are the following color combination's that the radio came in; black-yellow, ivory-yellow, black-red, ivory-red, and ivory-gray. Each color combination is denoted in the model number by the last digit.

“Made under licenses of RCA and Hazeltine and other patents” is also stamped inside the battery compartment. During the early 1950’s RCA and Hazeltine Labs owned or controlled most consumer electronics patents and a manufacturer had to seek license and technical support from these companies.