Construction refers to both basing size and the envelope.: H/F means "Heater or Filament" voltage and current specifications. (F) means "Filamentary", and (H-K) means "Heater-Cathode.
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Catalog Datasheet MFG & Type PDF Document Tags; 3S4 tube. Abstract: tube 1S4 tube 3s4 pentode 1S4 Text: over the ratings. QUICK REFERENCE DATA The Sylvania Type 3S4 is a miniature power amplifier pentode designed for service in portable, battery operated equipment. Get the best deals on Vintage Tube Sockets when you shop the largest online selection at eBay.com. Free shipping on many items ... Item Location. see all. Default. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. In most cases the tubes manufactured to the European system have an exact equivalent tube in the American system and vice versa. When tube equipment was common, retailers such as drug stores had vacuum tube testers, and sold replacement tubes. Some Nixie tubes were also designed to use sockets. Throughout the tube era, as technology developed, sometimes differently in different parts of the world, many tube bases and sockets came into use.
Catalog Datasheet MFG & Type PDF Document Tags; 1T4 tube. Abstract: tube 1T4 IT4 tube Scans-0017351 ett23 general electric Text: ï»¿Â»-^TUBE 1T4 Description and Rating PENTODE 1T4 PAGE I The IT4 is a miniature remote-cutoff pentode designed for use as a radio-frequency or intermediate-frequency amplifier in compact , dated 4-50 1T4 PAGE 2 AVERAGE TRANSFER CHARACTERISTICS , NUMBER 1 ... This 1932 RCA BELOW manual provides all the data sheet information, of the first radio receiving tubes ever made, from about 1920 to 1932. It has many circuit diagrams, using these tubes and all the information, about these original vacuum tubes. 1614 substitution << < (3/4) > >> Bill, KD0HG: It's all about voltage ratings. The plate voltage in the Ranger I runs around 550, with solid state rectifiers a bit over 600 volts on the modulators and 6146. According to the RCA HB3 data sheet for the 1614 dated 12/1946, the tube is called a "Transmitting beam power amplifier".