• Country
• Great Britain (UK)

• Manufacturer / Brand
• Hacker Radio Ltd., Maidenhead

• Year
• 1960–1963

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 79491

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

• Number of Transistors
• 7

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 470 kHz

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Dry Batteries / 2 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 8 inch = 20.3 cm

• Power out
• 1 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Herald RP10 - Hacker Radio Ltd., Maidenhead

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

• Dimensions (WHD)
• 12 x 8.5 x 4.5 inch / 305 x 216 x 114 mm

• Notes

• The Herald seven-transistor portable receiver. Interesting features of this are a specially-loaded large (8" x 5") loudspeaker, a one-watt push-pull output, and three-position tone control.
  Sockets are provided for an external aerial for use in a car and for connecting a microphone for using the receiver as a Baby Alarm. 

  Up to s/n 20000 Ediswan transistors fitted.
  April 1962 s/n 20001 onwards chassis revised, Transistors: 3 x AF117, OC71, OC81D 2 x OC81. 

• Net weight (2.2 lb = 1 kg)
• 2 kg / 4 lb 6.5 oz (4.405 lb)

• Mentioned in
• Wireless World (The), London (WW, 79) (Sep 1960, Page 442.)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Juan Antonio Pardo-Alonso. See "Data change" for further contributors.

• Other Models

• Here you find 56 models, 56 with images and 23 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hacker Radio Ltd., Maidenhead