Progressive Edu-Kit

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

Data
Forum
Pictures
Collections

  • Year
  • 1959 ?
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 334154

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 3
  • Number of Transistors
  • Power type and voltage
  • 110-120 AC/DC Volt
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: Progressive Edu-Kit - Progressive Electronics Co. /
  • Notes

  • 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
  • Price in first year of sale
  • 19.75 US$
  • Mentioned in
  • -- Original prospect or advert (February 1947 Popular Mechnacis)
  • Literature/Schematics (1)
  • -- Original prospect or advert (Ads in nearly every Popular Electronics from 1954 to 1964)
  • Literature/Schematics (2)
  • article in March 2014 issue of The Spectrum Monitor
  • Author
  • Model page created by Rich Post. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Progressive Edu-Kit is part of the collections of the following members.

 Forum