• Country
• Czechoslovakia

• Manufacturer / Brand
• Rektra, Radioelektra;; Praha

• Year
• 1939/1940

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 23211

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; 125; 145; 200; 220; 245 Volt

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

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Rektra RA90 - Rektra, Radioelektra;; Praha

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

• Dimensions (WHD)
• 490 x 320 x 240 mm / 19.3 x 12.6 x 9.4 inch

• Notes

• See also models Philips RA90A-14, NSF-Aristona H90A (-20), Mediator M90A, SFR-Radiola RA90A, Mullard MAS90, Rektra RA90, Philips 480A.

• Price in first year of sale
• 1,670.00 CSK

• External source of data
• Erb

• Source of data
• Ceskoslovenske prijimace 1933-1945, Baudys 1947

• Literature/Schematics (1)
• -- Original-techn. papers. (Generic model 90A by Philips dated 1939)

• Other Models

• Here you find 15 models, 15 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Rektra, Radioelektra;; Praha