York-Royal 20 valve

York-Royal 20 valve; Reliance Radio. (ID = 2415530) Radio
York-Royal 20 valve; Reliance Radio. (ID = 2415531) Radio York-Royal 20 valve; Reliance Radio. (ID = 2415532) Radio
York-Royal 20 valve; Reliance Radio. (ID = 2415533) Radio York-Royal 20 valve; Reliance Radio. (ID = 2415540) Radio
Use red slider bar for more.
York-Royal 20 valve; Reliance Radio. (ID = 2415531) Radio
Reliance Radio.: York-Royal 20 valve [Radio] ID = 2415531 1400x903
Select picture or schematic to display from thumbnails on the right and click for download.
For model York-Royal 20 valve, Reliance Radio.(York)(Sky-Raider); Sydney:
Radio gramophone cabinet on the left and speaker cabinet on the right. Wireless Weekly Dec 17, 1937, Page 60, on left. Wireless Weekly Dec 9, 1938 Page 26, on right.
Country:  Australia
Manufacturer / Brand:  Reliance Radio.(York)(Sky-Raider); Sydney
Year: 1937 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 20: 6K7 6L7 6D6 6K7 6K7 6H6 6C6 6K7 6H6 6L7 6H6 6F5 6A6 6A6 2A3 2A3 2A3 2A3 5Z3 5Z3
Main principle Superhet with RF-stage; 4 AF stage(s)
Tuned circuits 11 AM circuit(s)
Wave bands Broadcast plus more than 2 Short Wave bands.
Details Record Player (perh.Changer)
Power type and voltage Alternating Current supply (AC) / 220/240/260 Volt
Loudspeaker 2 Loudspeakers
Power out
from Model: York-Royal 20 valve - Reliance Radio.YorkSky-Raider;
Material Wooden case
Shape Console, Lowboy (legs < 50 %).

The 20 Valve, 4 band, York-Royal Radiogram was based on the luxury principle of Scott Radio labs in the USA with a turntable, radio/pre-amplifier and a separate final audio output stage and power supply in one cabinet with chrome plated chassis and a separate large speaker cabinet with two, Magnavox, 12” permanent magnet speakers.

The power supply chassis incorporates a push-pull/parallel audio output stage with four, 2A3’s, and connect to the speaker cabinet by a 200Ω line transformer.

The radio incorporated the following EH Scott luxury features;

  • An automatic frequency control. When the set is tuned to within 10kHz of a station the set will automatically tune to the centre frequency.
  • Band spread on short wave.
  • Automatic record changer
  • Extra hum reduction filters in the power supply.
  • The circuit uses an RF stage on each band and two IF stages.
  • There is also an extra IF channel for the AFC system.
  • The first audio amplifier, 6L7, incorporates a noise suppression (muting) when the radio is off channel.
  •  The first audio amplifier provides volume expansion when switched to gramophone.

Reliance provided a 5 year Guarantee for the York-Royal.

Literature/Schematics (1) Wireless Weekly (Australia) (Dec 17, 1937, Page 5)
Documents about this model
  York-Royal description. Wireless Weekly Dec 17 1938, Pages 58-61 5593 KB

Model page created by Stuart Irwin. See "Data change" for further contributors.

All listed radios etc. from Reliance Radio.(York)(Sky-Raider); Sydney
Here you find 44 models, 34 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.