#Transistor radios 1950s serial number
#Transistor radios 1950s manual
#Transistor radios 1950s portable
#Transistor radios 1950s code

What’s It Worth: Vintage transistor radios.Cool or what? A solar-powered transistor radio from 1957.

Book review: Build your own transistor radios.

#Transistor radios 1950s portable

It was the start of a portable audio trend that would include the boombox, the Walkman, CD players, the iPod and other MP3 players, and now smartphones. Some estimates suggest that there are more than seven billion transistor radios in existence. The transistor radio remains one of the most popular communications devices. Although its price was high in terms of 1950s dollars, nearly 100,000 of the pocket radios were sold in a year. When it went on sale on November 1, the Regency TR-1 cost $49.95. The 5×3×1¼-inch radio used four TI transistors and a TI subminiature output transformer, according to a TI press release issued on October 18, 1954. The new transistor radio would be introduced in New York and Los Angeles by mid-October to take advantage of holiday sales.

#Transistor radios 1950s manual

Koch designed a feedback circuit that accommodated the tolerance of production-run components and let them be soldered directly into the boards without manual selection. Prototype transistor radios built prior to the TR-1 required manually selecting and matching electrical components to make them work, which in turn created a prohibitive cost per unit for large-scale production. You can view the patent and schematics here. The “transistor radio apparatus” was patented by IDEA’s Richard Koch in 1955. TI soon partnered with the Regency Division of Industrial Development Engineering Associates (IDEA). In the spring of 1954 and with a prototype in hand, TI searched out an established radio manufacturer to develop and market a radio using its transistors. Haggerty decided TI would develop the transistor radio business and the company’s semiconductor products division took on the challenge of developing a method for mass-producing germanium transistors. Sold in stores, your 1967 keepsake would be worth a listed minimum of $75 if it was still mounted on the display card alone, it has a value of about $25.With these factors in mind, TI’s executive vice president Pat Haggerty “decided that the electronics industry needed a transistor wake-up call and that a small radio would provide it,” according to TI’s Web site. Is this part of my girlhood worth anything? I wasn’t allowed to wear it outside the house, so it sat in a drawer for years. When I was a young girl (it feels like centuries ago), my mother bought me this Monkeys charm bracelet with pictures of Mickey, David, Peter and Mike. There were former incarnations bearing the Hackwood name, with the earliest established in 1807. The maker, William Hackwood & Son, was the last of that name, and it operated from 1843 to 1855. This platter came from Staffordshire, as did most 19th century and early 20th century ceramic ware. Sad to say, I cannot answer your question, though I can give you some more clews (British spelling) to follow. Since we have the same name as the maker, I wonder how it got here from England. I am not sure how or where the platter in these photos came into my family’s possession. Without any photos, I can only give you a value guesstimation of $100-$125.

#Transistor radios 1950s serial number

Because you didn’t include the gun’s serial number I cannot place its date of manufacture especially since this model handgun was in production from 1884 to 1941. Harrington & Richardson was founded in the 1870s (originally located in Worcester, Mass.), and went through a number of owners, eventually winding up as part of Marlin Arms. How old is my H&R “Young America Double Action”. It looks like you have a modern reproduction.

#Transistor radios 1950s code

The easiest path to follow in determining the approximate age of your print is the five digit ZIP (Zoning Improvement Plan) code which came into use in 1963.

On the right corner is “From the collection, Fiesta Arts, Inc., Greenville, NY 11548.” Please let me know if this print has any value? I have this “Learning to Cook” print which has the date of 1898 in the lower left-hand corner. Current value on your working radio is $175. It was a very expensive radio, selling, as you said, for well over $50 this at a time when gasoline cost only 22¢ per gallon. Your particular Zenith (500B) was the second Royal model and was produced after 1955. Though the transistor had been invented in 1947 by William Shockley, John Bardeen and Walter Brattain, it wasn’t until 1953 that portable radios employed them. I bought this tubeless transistor Royal 500 radio for $60 in the 1950s.