• Country
• Germany

• Manufacturer / Brand
• Lorenz; Berlin, Zuffenhausen u.a.

• Year
• 1970

• Category
• Commercial Transmitter & Receiver (TRX not Amateur)

• Radiomuseum.org ID
• 191933

• • Brand: SEL

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Transceiver

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

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

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Sprechfunkgerät SEM 57-820RF - Lorenz; Berlin, Zuffenhausen u

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 380 x 230 x 200 mm / 15 x 9.1 x 7.9 inch

• Notes
• Version des SEM 57 für Bahnfunk. Funktionsteil und Bedienteil getrennt. Frequenzbereich 68,33 - 69,55 MHz. Es existieren auch andere Versionen des SEM 57 (4 m-Band, 2 m-Band) für Landfunk bzw. Seefunk mit unterschiedlichen Bedienteilen.

• Net weight (2.2 lb = 1 kg)
• 9 kg / 19 lb 13.2 oz (19.824 lb)

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

• Author
• Model page created by Siegfried Droese. See "Data change" for further contributors.

• Other Models

• Here you find 733 models, 588 with images and 359 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Lorenz; Berlin, Zuffenhausen u.a.