• Country
• Netherlands

• Manufacturer / Brand
• Amroh NV (Radio Bulletin monthly), Muiden

• Year
• 1953

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 281692

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

• Number of Tubes
• 4

• Valves / Tubes
• EAF42 EAF42 EL41 AZ41

• Main principle
• Superheterodyne (common)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

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

• Power out
• 4.5 W (unknown quality)

• Material
• Various materials

• from Radiomuseum.org
• Model: MK Duomax - Amroh NV Radio Bulletin

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

• Notes

• Model MK Duomax was not available as a kit. All parts had to be purchased as separate components.

  Radio Bulletin (November 1963) provides a short description of the Duomax plus an announcement of the construction documentation F-3. This documentation contains an extensive construction description plus a part list for all mechanical, electro-mechanical and electrical parts.

  Major components:

  • chassis: CH53
  • variable capacitor: Novocon DC203
  • scale: Novocon TD103
  • power transformer: Amroh P 120 D
  • audio transformer: Muvolett 7043 or 7045
  • loudspeaker: Peerless Bantam or Bantamette
  • cabinet: type Rialto.

  ---

  De MK Duomax is geen bouwdoos; alle onderdelen dienen los te worden aangeschaft.

  Radio Bulletin november 1953 geeft de korte beschrijving van de Duomax en tevens de aankondiging van de bouwmap F-3. Bouwmap F-3 geeft een uitgebreide beschrijving van de bouw inclusief een lijst die alle mechanische, electro-mechanische en electrische onderdelen opsomt.

  Opbouw van de MK Duomax:

  • chassis: CH53
  • afstemcondensator: Novocon DC203
  • afstemschaal: Novocon TD103
  • voedingstransformator: Amroh P 120 D
  • uitgangstransformator: Muvolett 7043 of 7045
  • luidspreker: Peerless Bantam of Bantamette
  • behuizing: type Rialto.

• Mentioned in
• Radio Bulletin (November 1953)

• Literature/Schematics (1)
• Muiderkring uitgave Bouwmap F-3

• Author
• Model page created by Rob Majoor. See "Data change" for further contributors.

• Other Models

• Here you find 240 models, 208 with images and 231 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Amroh NV (Radio Bulletin monthly), Muiden