Voyager Nine Transistor TR-970

Realtone Electronics Corp.; New York

  • Year
  • 1960
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 82197
    • alternative name: Realtone, NY

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

 Technical Specifications

  • Number of Transistors
  • 9
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz; 3 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Dry Batteries / AA: 4 x 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.4 inch = 6.1 cm
  • Power out
  • 0.25 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Voyager Nine Transistor TR-970 - Realtone Electronics Corp.;
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 114 x 155 x 51 mm / 4.5 x 6.1 x 2 inch
  • Notes
  • Realtone Voyager Nine Transistor TR-970 has the following features:

    • LW: 130 - 400 kHz ("MARINE BAND")
    • MW: 540 - 1600 kHz ("STANDARD BAND") with markings for Civil Defense
    • SW: 4 - 12 MHz ("SHORT WAVE")
    • Separate ferrite rod antennas for MW/SW and LW
    • 15mA @ 6VDC (No Signal), 20mA @ 6VDC (Normal Signal)
    • tone control, removable telescoping antenna stored in pouch on leather case, metal carrying handle, brown leather carrying case known

    Note that although this radio has what we assume is a 9V battery connector, it is not designed for 9 volts.  That connector mates to a 2x2 AA battery holder (6VDC) that has a mating 9V connector.

    Identical to Lincoln TR-970 in design.

    Made in Japan

  • Net weight (2.2 lb = 1 kg)
  • 0.650 kg / 1 lb 6.9 oz (1.432 lb)

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The model Voyager Nine Transistor is part of the collections of the following members.

 Forum

Forum contributions about this model: Realtone Electronics: Voyager Nine Transistor TR-970

Threads: 1 | Posts: 6

Hello,

I've been troubleshooting a Realtone TR-970 and the MW oscillator is dead.

Fortunately, I have the excellent schematic and parts list.

The oscillator transistor tests as damage -- it's a 2SA153 PNP , according to the parts list, which matches the spec printed on the transistor.

According to the Radio Museum website this is a germanium diffused high-frequency transistor.

Question: Can I replace this PNP with a silicon 2N3906 PNP transistor intended for general purpose low-power amplifying, or do I need a replacement more specifically matched?

Thanks ...

Richard Varner, 21.Apr.19

Weitere Posts (6) zu diesem Thema.