• Country
• Great Britain (UK)

• Manufacturer / Brand
• Ambassador (brand), R. N. Fitton Ltd.; Brighouse, Yorkshire

• Year
• 1948 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 169568

• • Brand: Ambassador

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH35 EF39 EBC33 EL33 EZ35

• Main principle
• Superheterodyne (common); ZF/IF 452 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 200-250 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Ambassador 548 AC [Early] - Ambassador brand, R. N. Fitton

• Shape
• Miscellaneous shapes - described under notes.

• Notes

• The book Radio! Radio!, Hill, 1986. suggests this is a radio in bookcase. Very similar to 4756 (1947). However ERT publication Nov 1948. shows a picture of this set as a table model. Perhaps it was produced with more than one type of case? The early production sets had the heaters wired in parallel, later sets were series wired like the AC/DC version.

• Source of data
• -- Schematic

• Literature/Schematics (1)
• Radio And Television Servicing books (R&TVS) (ERT Nov 1948.)

• Author
• Model page created by Keith Staines. See "Data change" for further contributors.

• Other Models

• Here you find 48 models, 26 with images and 25 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ambassador (brand), R. N. Fitton Ltd.; Brighouse, Yorkshire