Used Radio Parts Buying Guide

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Used Radio Parts Buying Guide

The radio was one of the most important inventions of the past 100 years. Radio receivers have evolved from homemade crystal sets in the 1920s, to more sophisticated models that receive broadcasts from around the world on a wide range of bands. Even though the basic principle of the radio has remained the same, the physical form of the radio, and the components used to make it work, have gone through many phases during the last century. Some of the models (i.e. vintage radios) are now collector's items. In fact, the collection and restoration of antique radios is so popular that clubs have formed around the world to let collectors and restorers share their knowledge.

Antique radios are aesthetic and meant to be display, but in many cases they may not be functional due to age or damage. It is possible to restore these old radios to complete working order, since most commonly needed electrical components are available. However, collectors and restorers sometimes look for, and often find, original components manufactured for a specific model.

Buyers in search of used radio parts can find them in specialist stores, through antique radio clubs, or online. To find out what parts are needed, buyers must first correctly identify the radio and complete a simple inspection to find out what parts are no longer functional. Armed with this basic information and a few simple tools, buyers comfortable working with electronics and wood can enjoy the thrill of bringing an old radio back to life.

Types of Vintage Radios

A vintage or antique radio is considered collectible because of its age and rarity. This generally means the radio is at least 50 years old, was made before World War II, uses valve sets, or was built within the first five years of transistor usage. There are many different types of antique radios. Some of the common types are discussed below.

Homemade Sets from the 1920s

Building a radio was one of the most common ways to tune into broadcasts in the early days of radio. In the United States, listeners could purchase instructions issued by the Government that explained how to build a simple radio at home. The number of homemade radio sets actually outnumbered commercial sets until the end of World War II. There are three main types of homemade radio sets:

1.  Crystal sets

2.  Tuned radio frequency sets

3.  Superheterodyne receivers

Superheterodyne receivers, also known as superhets, use the same technology used in many modern receivers. The main difference is that today's sets use transistors or integrated circuits instead of valves.

Farm Radios

Designed for American farms that were not connected to the electrical grid, the majority of farm radios ran on standard disposable batteries or on six volt power supplied by a car or tractor battery. Some farm radios were made to run on 32 volts DC, from a system powered by a set of lead-acid batteries, which in turn were charged by wind or by a gas generator. Some farm radios made between the late 1930s to the 1950s were designed for use with a large "A-B" dry cell.

Foxhole Radios

During World War II, people without access to common radio components used non-standard parts to create a type of radio set called a foxhole radio. Typically, foxhole radio builders used lighting flex to make antennas, razor blades and pencil lead to make detectors, and tin cans, magnets, and some wire to make the earpieces.

Tabletop Wood Radios

As the name suggests, tabletop radios were designed to sit on a tabletop. They were rectangular in shape and were usually used in the kitchen, sitting room, or bedroom. They were sometimes placed on verandahs. Bakelite and plastic were used to make tabletop radios, and so was wood.

Console Radios

During their day, console radios were the centrepiece of a home's entertainment equipment. Usually large and expensive, they were most often purchased by the wealthy. The wooden cabinets of many antique wooden consoles require restoration.

Bakelite or Catalin Sets

Bakelite radio sets are made of a type of plastic called bakelite, which can be coloured, marbled, moulded, and finished. Bakelite is commonly available in a brown-black colour, and is still in use today. The coloured version is called catalin. Most antique bakelite radio sets are of the brown-black variety.

Early Transistor Radios

Transistor radios replaced vacuum tubes with a newer technology: the transistor. Transistors allowed radios to be designed in smaller sizes, and to run on smaller batteries. Transistors are still used in radios today in the form of integrated circuits (i.e. circuits with a large number of transistors). The first transistor radios became available in the 1950s.

Some older two-way radios are also considered vintage radios. Most antique radios may not be in perfect working condition, or they may have been serviced with non-authentic parts. Buyers can find used radio parts that match their radio units and use these to restore them to their original state, or as close to it as possible.

How to Identify an Old Radio

Correctly identifying an antique radio can help buyers acquire repair information if needed. Due to the fact that there were many thousands of different radios manufactured around the world, there is no single source that lists every one of them. However, the following steps should help identify a radio.

1.  Look for a Manufacturer and Model Number

2.  Look for a Name

This information can then be used to search collector's books, technical service publications, online forums, and websites. Users can also ask radio collectors for information regarding the radio. Buyers unable to locate a manufacturer, model number, or name can use a combination of other factors to help identify the radio. All of these parts can help date a radio.

  • Component markings
  • Cabinet design
  • Cabinet materials
  • Dial markings
  • Tubes
  • Transistors

Available Used Radio Parts

The most common parts that are replaced when restoring an old radio are tubes and capacitors, which are still readily available at cheap prices. However, there are many other parts that may be required depending on the state of the radio.

Category

Parts

Electrical

Vacuum tubes (valve sets)

Capacitors

Crystal set parts

Wire and cables

Lamps

Semiconductors

Diodes

Rectifiers

Controls

Knobs

Jacks and plugs

Metres

Dials

Casing

Chassis

Speakers

Documentation

Schematics

Manuals

Accessories

Headphones

Other parts

Fabric belts

Batteries

In some cases, especially with batteries and belts, it may be more practical to look for, or make, a replacement instead of an original part. The function of fabric belts, for example, can be replicated with O-rings.

Identifying Parts to Replace

Before purchasing used radio parts, buyers must first find out which parts must be replaced. To do so, buyers should take the following steps.

1.  Obtain the correct schematic diagram for the radio

2.  Clean and inspect the chassis

3.  Inspect the radio for obvious problems

4.  Clean and test the tubes

5.  Clean controls and switches

6.  Test other components

After these steps, buyers should have a good idea of what used parts are needed to restore the radio.

Buying Used Radio Parts on eBay

Once you know what parts are needed to restore an antique radio set, you can start an eBay search for these parts. But first, determine if any of the parts can be replaced by equivalent substitutes. To search for original parts or an appropriate substitute, enter a keyword phrase into the search bar on eBay's home page. If you want something in particular, you can add additional descriptive keywords to the search field. For example, a search for "vintage radio knobs" returns a complete list of all vintage radio knobs currently available on eBay. After specifying a category by clicking on it in the sidebar, you can filter the results based on various criteria, such as price, condition (whether new or used), and the seller's distance from your home. Before committing to a purchase, you should ask the seller any questions you have about the item to ensure that it is the correct part for the radio in question. Buyers are also advised to find out about a seller's return or exchange policy, in case you discover it is the wrong part.

Conclusion

Any radio that is over 50 years old, that uses vacuum tubes, that was made before World War II, or is one of the first transistor-based radios is considered a vintage radio. Vintage radios are collectible items because of their age and rarity. Buyers of vintage radios may need to spend time restoring both the exterior and the interior of a radio to make it usable again. Vacuum tubes and capacitors are the most common items that need replacement. However, buyers may need to purchase additional electronic components, as well as other mechanical parts. Common mechanical replacement parts include knobs, dials, and fabric belts. To find out what parts are needed, buyers must first identify the model of the radio. They must then carry out a basic inspection to find out which parts need to be replaced. Buyers can use many resources, including online forums and antique radio clubs, to find out more about a particular radio. Used radio parts are available at specialist shops or online. eBay, one of the largest online marketplaces, offers a large selection of vintage radios and used radio parts.

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