• Country
• Great Britain (UK)

• Manufacturer / Brand
• Mullard Wireless, London (see also Mullard Radio Valve)

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 78819

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

• Number of Tubes
• 4

• Valves / Tubes
• ECH3 EF9 EBL1 AZ1

• Main principle
• Superheterodyne (common); ZF/IF 128 kHz; 1 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110-250 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch

• Material
• Bakelite case

• from Radiomuseum.org
• Model: MAS90 - Mullard Wireless, London see

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 17.75 x 12.5 x 8.5 inch / 451 x 318 x 216 mm

• Notes

• Bakelite. Also wooden and blue leatherette versions.

  See also models Philips RA90A-14, NSF-Aristona H90A (-20), Mediator M90A, SFR-Radiola RA90A, Rektra RA90 and Philips 480A /15.

• Net weight (2.2 lb = 1 kg)
• 18 lb 12 oz (18.75 lb) / 8.513 kg

• Source of data
• Radio! Radio!

• Literature/Schematics (1)
• - - Manufacturers Literature (Generic model 90A by Philips dated 1939)

• Literature/Schematics (2)
• Trader Service Sheet (suppl. of Wireless & El. Trader, etc.) (459)

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 143 models, 117 with images and 59 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Mullard Wireless, London (see also Mullard Radio Valve)