Progressive Edu-Kit

• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• Progressive Electronics Co. / Progressive Edu-Kits, Inc.; Brooklyn, NY / Hewlett, NY

• Anno
• 1959 ?

• Categoria
• Kit, scatola di montaggio (parti sfuse e istruzioni o solo istruzioni di montaggio) 

• Radiomuseum.org ID
• 334154

• Immagini
• Schemi

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• Numero di tubi
• 3

• Valvole
• 6C5 6SD7 6SD7

• Numero di transistor

• Semiconduttori
• Selenium-Rectifier

• Tensioni di funzionamento
• 110-120 AC/DC Volt

• Altoparlante
• - solo per cuffie o auricolari

• Materiali
• Mobile di metallo, valvole visibili

• Radiomuseum.org
• Modello: Progressive Edu-Kit - Progressive Electronics Co. /

• Annotazioni

• The kit of parts and instructional manual for the Progessive Edu-kit allowed for building 16 radio circuits. The circuits were all AC-DC "hot-chassis" with one side of the power line directly connected to the metal chassis.  The resistance in the line cord was used for one, two, or all three 6 volt tube filaments in series.   The full B+ voltage was applied to the single earphone for a number of the circuits.  In a word, the kit could be dangerous to the unsuspecting kit builder.  The radio circuits were indeed progressive ranging from a one tube triode grid leak detector to a pentode grid leak detector to several variations of a two-tube set with RF amplifier and various detectors, to several variations in a three tube set using the tubes as either a detector and audio amplifier or RF amplifier and detector.  A code oscillator and a broadcaster were the final circuits

  As listed in the kit manual, the parts included:

  1. 1 Instruction book
     1 Chassis - Punched, heavy gauge steel
     3 Tube sockets
     1 6C5, 6J5, or 6P5 tube
     2 6SD7, 6SK7, or 6SJ7 tubes
     1 Selenium rectifier - 65 ma
     1 Electrolytic condenser - dual 20 mfd at 150v.
     1 Resistance line cord - 330 ohms
     1 Variable condenser - dual gang 420 Mmf.
     1 Antenna coil (measured coil inductances = 240uH and 2mH)
     1 RF coil (measured coil inductances = 240uH and 10mH)
     1 Hank of spaghetti (tubing)
     1 Headset - 1000 ohms impedance
     1 Package of hardware
     1 Hank of hook-up wire
     1 Roll of solder
     1 Package of Resistors and Condensers
  2. Capacitors and resistors
     Resistor R1 - is listed as "Any value between 1500 and 5000 ohms".
     R2 is any value between 1 megohm and 3.3 megohm
     R3 is any value between 22 K and 50 K ohms
     R4 is any value between 100 K and 300 K ohms
     C1 is .01 MFD
     C2 is .001 MFD

• Prezzo nel primo anno
• 19.75 US$

• Bibliografia
• -- Original prospect or advert (February 1947 Popular Mechnacis)

• Letteratura / Schemi (1)
• -- Original prospect or advert (Ads in nearly every Popular Electronics from 1954 to 1964)

• Letteratura / Schemi (2)
• article in March 2014 issue of The Spectrum Monitor

• Autore
• Modello inviato da Rich Post. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 1 modelli, di cui 1 con immagini e 1 con schemi.
  Elenco delle radio e altri apparecchi della Progressive Electronics Co. / Progressive Edu-Kits, Inc.; Brooklyn, NY / Hewlett, NY