• Country
• Germany

• Manufacturer / Brand
• Siemens-Reiniger-Werke AG (SRW); Berlin

• Year
• 1957 ??

• Category
• Medical Technology

• Radiomuseum.org ID
• 359165

• Number of Transistors
• 3

• Semiconductors
• TF65 TF65 TF65 OA95

• Main principle
• Audio-Amplification; 3 AF stage(s)

• Wave bands
• - without

• Details
• Hearing aid

• Power type and voltage
• Dry Batteries / LR1: 2 x 1,5 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Metal case

• from Radiomuseum.org
• Model: Phonophor Hörgerät 501 - Siemens-Reiniger-Werke AG SRW;

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 45 x 85 x 15 mm / 1.8 x 3.3 x 0.6 inch

• Notes

• Hörgerät für Hemd-/Jackentasche. Transistoren TF65 in Allglastechnik.

• Net weight (2.2 lb = 1 kg)
• 0.069 kg / 0 lb 2.4 oz (0.152 lb)

• Author
• Model page created by Wolfgang Gebert. See "Data change" for further contributors.

• Other Models

• Here you find 12 models, 10 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siemens-Reiniger-Werke AG (SRW); Berlin