• Country
• Australia

• Manufacturer / Brand
• His Master's Voice (HMV, H.M.V.), EMI (Australia) Ltd.; Sydney, NSW

• Year
• 1962–1965

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 252708

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

• Number of Transistors
• 6

• Semiconductors
• SFT317 or. OC170 SFT320 or. 2N1634 SFT320 or. 2N1634 SFT353 or. 2N408 DGP322 or. 2N649 DGN322 or. 2N408 SFD106 SFD106

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Escort J7-1A Ch= J7 - His Master's Voice HMV, H.M.V.

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 6.125 x 3.625 x 1.4375 inch / 156 x 92 x 37 mm

• Notes

• His Master's Voice Model J7-1A "Escort"

  A six-transistor portable radio, housed in Cyclolac plastic case. Colours: storm grey or apache red.

  Features: Ferrite rod aerial, connection for earpiece. Operates from one Eveready Type 2362 battery. Speaker 2¾" Hi-Flux, 50 ohm voice coil. Frequency range 540-1600 kC/s (kHz). Printed circuit for ease of servicing. Complete with earpiece and carrying strap. (FROM MINGAY'S PRICE SERVICE)

  Manufacturer's literature lists 2 different series of transistors. The initial series is as above and the later series is OC170, 2N1624, 2N1634, 2N408A, 2N649, 2N408. The diodes appear unchanged and there are no other citcuit changes noted.

  Unusually for this period, the radio name on the front of the radio is highlighted with enamel in 3 different colours; HMV is highlighted in yellow, ESCORT in white and TRANSISTOR in red.

  Alternative battery types:  Berec PP22, National 106P, Ray-O-Vac RR362 & Toshiba T106P.

  Weight is with battery and includes carry strap and earphone.

  The price was advertised as 22 Guineas Australian, which is approximately £23/2/- (£23.1) or $46.20.

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

• Price in first year of sale
• 23.10 AUS £

• Mentioned in
• Mingay's Price Service (Aug 1962 to Aug 1965.)

• Literature/Schematics (1)
• -- Original-techn. papers. (HMV Circuit Diagram & Parts List for Chassis Type J7.)

• Literature/Schematics (2)
• J.R. Publications Transistor Radio Service Handbook (A Series (Australian models), Page H51.)

• Author
• Model page created by Brian Wilson. See "Data change" for further contributors.

• Other Models

• Here you find 586 models, 406 with images and 283 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from His Master's Voice (HMV, H.M.V.), EMI (Australia) Ltd.; Sydney, NSW