• Country
• Germany

• Manufacturer / Brand
• Becker, Max Egon, Autoradiowerk Ittersbach bei Pforzheim

• Year
• 1963–1965

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 26025

• Number of Transistors
• 5

• Semiconductors
• OC75 OC74 GFT1008/40 OC28 OC28

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 12; 24 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 14 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Sprechverstärker TR511 [OC28] - Becker, Max Egon,

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 255 x 110 x 140 mm / 10 x 4.3 x 5.5 inch

• Notes
• Sprechverstärker für Linienbusse, Straßenbahnen, Reisebusse und Verstärker für Kommandoanlagen; Anschlüsse für TA und Mikrofon.

• Net weight (2.2 lb = 1 kg)
• 2.5 kg / 5 lb 8.1 oz (5.507 lb)

• Price in first year of sale
• 450.00 DM

• External source of data
• Erb

• Source of data
• Handbuch VDRG 1964/1965 / Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 312 models, 228 with images and 161 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Becker, Max Egon, Autoradiowerk Ittersbach bei Pforzheim