• Country
• United States of America (USA)

• Manufacturer / Brand
• Zenith Radio Corp.; Chicago, IL

• Year
• 1973 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 274940

• • alternative name: Chicago Radio Lab

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

• Number of Transistors
• 10

• Semiconductors

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / Either batteries: "C" 6 x 1.5 or AC: 50 to 60Hz, 120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm

• Power out
• 0.5 W (max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Royal E71 - Zenith Radio Corp.; Chicago,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 205 x 172 x 75 mm / 8.1 x 6.8 x 3 inch

• Notes

• The Zenith Royal E71 is a battery/AC operated portable 10 transistor AM receiver.  The AM band frequency tuning range is 540 to 1600kHz.  Has push-pull output stage and built-in loopstick antenna with provisions for connecting an external antenna.  Also has an earphone jack that disconnects the speaker for private listening.

  Made in Hong Kong.

  NOTE: Inside label is marked as model "RE71", which is the Zenith shorthand for "Royal E71".

• Net weight (2.2 lb = 1 kg)
• 1 lb 0 oz (1 lb) / 0.454 kg

• Literature/Schematics (1)
• - - Manufacturers Literature (Zenith Service Manual "Royal E71" Solid State Battery/AC Portable AM Radio RA-51 dated Aug 1973)

• Literature/Schematics (2)
• Photofact TSM Transistor Radio Series SAMS (TSM-159)

• Author
• Model page created by Michael Gnaedig-Fischer. See "Data change" for further contributors.

• Other Models

• Here you find 4496 models, 4101 with images and 3615 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL