• Country
• Latvia (Latvia, Riga)

• Manufacturer / Brand
• Perl,J. & M. Marienfeldt, Riga

• Year
• 1933 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 119778

• Number of Tubes
• 4

• Valves / Tubes
• RENS1294 RENS1284 RES964 RGN1064

• Main principle
• TRF with regeneration; 1 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 120/220 Volt

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Solus 4 tubes - Perl,J. & M. Marienfeldt, Riga

• Source of data
• - - Data from my own collection

• Other Models

• Here you find 2 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Perl,J. & M. Marienfeldt, Riga