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Transistor 7 GPN

Transistor 7 GPN; Astor brand, Radio (ID = 1424911) Radio
Transistor 7 GPN; Astor brand, Radio (ID = 1423129) Radio Transistor 7 GPN; Astor brand, Radio (ID = 1423130) Radio
Transistor 7 GPN; Astor brand, Radio (ID = 1424912) Radio Transistor 7 GPN; Astor brand, Radio (ID = 1433878) Radio
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Transistor 7 GPN; Astor brand, Radio (ID = 1423129) Radio
Astor brand, Radio: Transistor 7 GPN [Radio] ID = 1423129 933x876
Select picture or schematic to display from thumbnails on the right and click for download.
For model Transistor 7 GPN, Astor (brand), Radio Corporation Pty., Ltd.; Melbourne:
A photo of the GPN as it arived after purchase on eBay.
 
Country:  Australia
Manufacturer / Brand:  Astor (brand), Radio Corporation Pty., Ltd.; Melbourne
alternative name
 
Radio Corp.of Australia
Year: 1959–1962 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7: 2N486 or. OC44 2N484 or. 2N308 or. OC45 2N484 or. 2N309 or. OC45 2N362 or. 2N363 or. OC75 2N363 or. OC71 or. TS2_STC or. TS3_STC 2N632 or. 2N185 or. OC72 2N632 or. 2N185 or. OC72 1N295 1N295
Main principle Superheterodyne (common); ZF/IF 455 kHz; 3 AF stage(s)
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 9 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3 inch = 7.6 cm
Power out 0.25 W (unknown quality)
from Radiomuseum.org Model: Transistor 7 GPN - Astor brand, Radio Corporation
Material Modern plastics (no Bakelite or Catalin)
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 9 x 6.25 x 3 inch / 229 x 159 x 76 mm
Notes

This is an earlier model than the GPN-A using a different transistor selection. The radio uses tag strip construction rather than the printed circuit board of the GPN-A. The plastic case appears (from photographs) to similar or identical to the later model.The weight is without battery. Anything other than the most basic service work requires that the metal chassis be removed from the case.

There are 8 colour combinations listed in the Technical Bulletin uploaded under Schematics and there are 10 transistor combinations listed with some minor component changes as well as 2 different NTC resistors, again with resulting component changes. A comprehensive list of component parts is also included.

The case, ferrite rod antenna, tuning gang and speaker are all direct transplants from the (4 Valve) RQ model from 1955 which was still on sale in 1958 as an alternative to the HPN.

  • Comes with shoulder bag.
  • Four dial scales to suit NSW, VIC/TAS, QLD & SA/WA.
  • Rola Type 3C loudspeaker.
  • Battery Eveready Type 276P or equivalent.

Cabinet front & escutcheon colour combinations: Cherry Red/White, White/Cherry Red, Grey/Cherry Red, Old Rose/Charcoal, Charcoal/Lime, Cherry Red/Grey, Charcoal/Old Rose & Lime/Charcoal.

Cabinet rear section colours: Cherry Red, Charcoal, White, Old Rose, Grey & Lime.

Handle and grip assembly colours: Cherry Red, Charcoal, White, Old Rose, Grey & Lime.

Net weight (2.2 lb = 1 kg) 1.410 kg / 3 lb 1.7 oz (3.106 lb)
Price in first year of sale 35.70 AUS £
Literature/Schematics (1) - - Manufacturers Literature (Astor Technical Bulletin GPN-1, 7/10/1959. (Also at KevinChant.com))
Literature/Schematics (2) J.R. Publications Transistor Radio Service Handbook (Vol. 1, 1960, Page A19.)
Literature/Schematics (3) J.R. Publications Transistor Radio Service Handbook (A Series Handbook, Page A59.)
Literature/Schematics (4) Mingay's Radio Electrical Weekly Price Service (REWPS) (Feb 1960 to Feb 1962.)

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



All listed radios etc. from Astor (brand), Radio Corporation Pty., Ltd.; Melbourne
Here you find 843 models, 422 with images and 343 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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