315B Miniloctal tubes

Kungs (Brand); Göteborg

  • Year
  • 1941
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 160627
    • alternative name: Kungsradio

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 90 & 1,5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 16 cm = 6.3 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 315B [Miniloctal tubes] - Kungs Brand; Göteborg
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 380 x 240 x 182 mm / 15 x 9.4 x 7.2 inch
  • Notes
  • Weight specified without batteries. There is also a variant using standard loctal tubes.
  • Net weight (2.2 lb = 1 kg)
  • 5.4 kg / 11 lb 14.3 oz (11.894 lb)
  • Source of data
  • -- Schematic

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 Forum

Forum contributions about this model: Kungs Brand;: 315B

Threads: 1 | Posts: 1

The schematic notes the following tubes:
DK25 / DF25 / DBC25 (and DL21)

Comparing the pin allocation with data sources the different pin allocations are obvious.
DL21 is ok.
but there are discrepancies for
DK25: pin 5+6
DF25: pin 3+4
DBC25: pin 2+3

On the other hand the given allocations are matching exactly the related but not identical Mini-Loctals (we call them Miniloktals):

DK25_Miniloktal
DF25_Miniloktal
DBC25_Miniloktal

At Miniloktals the pins are positioned on a smaller circle of only 15 mm dia. (standard is 17.5 mm).
The center locking pin is also smaller than the standard one.

Konrad Birkner † 12.08.2014, 02.Sep.09

Weitere Posts (1) zu diesem Thema.