Russian Subminiature Tubes
RCA-6021 is a subminature medium mu twin triode of the heated cathode type having flexible leads. It is intended for is use in oscillator and amplifier at frequencies up to 400 Mc (that's 400MHz in today's money and overkill for audio applications).
But being as this is a 7550 dual triode, the most powerful subminiature tube in the world
The lightest and most compact hand radio transmitter-receiver, smaller than a loaf of bread, developed by the Raytheon Manufacturing Company, Waltham, Mass., with the Signal Corps Engineering Laboratories in 1948, is the first communications equipment to utilize tiny subminiature tubes on a mass production basis. It is a complete one-package transmitter, receiver, battery power-source, and.
Raytheon 5678 Subminiature Vacuum Tube From September 1952 Etsy
Large Radio Vacuum Tube List and "G" Style Radio Vacuum Tube List for more audio and rectifier tubes.. clip-on shield for round subminiature tube 0.875 inches long: 2 : shield: $1.00-----used (L) clip-on shield for round subminiature tube 1.25 inches long: Notes:
6112 Dual Triode. Subminiature Tube. A vacuum radio tube by Sylvania, U.S.A. 19028
than most subminiature vacuum tubes. The amplifier itself can be no larger than its associated coupling components The TRANSISTOR A Crystal Triode Germanium crystal with two cat -whisker contacts has characteristics of grounded -grid triode amplifier, provides 20 db gain, 25 milliwatts output at frequencies up to 10 mega- cycles.
6397 SP Subminiature RF Power Pentode. A vacuum tube by Telefunken 18573
Subminiature tubes are miniaturized versions of vacuum tubes. They were made in a very compact glass tube, had flexible leads instead of pins, and consumed much less power. Subminiature tubes were widely used in small amplifiers, portable radios and hearing aids.
Raytheon 6247 Subminiature Vacuum Tube CK6247 Etsy Hong Kong
THE employment of subminiature vacuum tubes in packaged assemblies is well known in hearing aids, proximity fuses,' and small radios.2 3 The use of the indirectly heated types in functional sub-assemblies was begun as part of a program to decrease the weight and to in-FIG. 1. Packaged amplifiers using subminiature tubes.
1Ж24Б Soviet subminiature vacuum tube from 1965 These tu… Flickr
In the 1930s Krim had developed subminiature vacuum tubes that allowed Raytheon to corner the hearing-aid market for vacuum tubes. By 1951 Raytheon had honed mass production of transistors. Zenith made its first transistorized hearing aid, the Model T, in 1953 with Raytheon transistors. Early transistors proved fickle and were sensitive to.
Vintage 1953 U.S. Army Subminiature Vacuum Tube 5851 TungSol 317 eBay
These subminiature tubes are a little underappreciated in the world of audiophililia and DIY electronics. That's a bit of a shame; these tubes are the most technologically advanced.
JAN 5678 Subminiature Pentode. A vacuum tube by Telefunken 18565
Try the eBay way-getting what you want doesn't have to be a splurge. Browse Sub-miniature tube! No matter what you love, you'll find it here. Search Sub-miniature tube and more.
Subminiature Vacuum Tubes 1DK29 (4) Untested Most NOS eBay
In Stock New-Old-Stock (NOS) tube. The 6021 is a subminiature medium-mu twin triode for use in general purpose amplifier applications. Each section has an individual cathode and is electrically independent.
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Subminiature Vacuum Tubes
The Subminiature Vacuum Tube: The Cycle of Technology is a short documentary of the history of the subminiature vacuum tube. This 16 minute film was produced.
Sylvania USA SD828A Silver Plate Top Get Subminiature Vacuum Tube VIVA TUBES
- Subminiature all-glass elliptical body and flat bases with short inline leads that can be soldered or can be mated with a special socket. (Flying leads can be cut short to fit into inline sockets.) - Subminiature all-glass round body and base with 8 flying leads or stiff pins arranged in a circle
Subminiature Vacuum Tubes
Subminature Tubes The first sub-miniature tube WE 215A around 1920 (front row) Miniaturization of parts started back in the early years of vacuum tube development as AT and T wanted to make.
Vacuum Tube JAN6088 Raytheon SubMiniature Power Amplifier The DHTS Store
Post subject: Portable Subminiature Vacuum Tube Receiver Project. Posted: Apr Tue 14, 2020 7:42 pm. Member. Joined: Nov Thu 04, 2010 4:49 am. Posts: 695. Location: Albany, NY. When I was in my early teens (I'm 31 years of age now) I used to spend quite a bit of time perusing through websites that would have PDF copies of various electronics.
6397 SP Subminiature RF Power Pentode. A vacuum tube by Telefunken 18573
What are Sub-Miniature Tubes? Sub-miniature tubes, also referred to as pencil tubes or hearing-aid tubes, are among the last generation of vacuum tubes designed and built. They're typically very small, and instead of being socketed they have flexible leads like passive components.
subminiaturevacuumtubes Secure Green Enterprises LLC
New-Old-Stock (NOS) tube. The 6111 is a subminiature medium-mu twin triode for use in general purpose amplifier applications. Each section has an individual cathode and is electrically independent. The tube may also be used as a combined oscillator and mixer in high-frequency circuits.