• Country
• Germany

• Manufacturer / Brand
• Samson, Margot; Osburg

• Year
• 1974

• Category
• Morse-Equipment & TTY, RTTY, TDD etc.

• Radiomuseum.org ID
• 144485

• • Brand: ETM

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

• Number of Transistors
• 5

• Semiconductors
• SN74121 SN7476 SN7473 SN7400 SN7410 SN7420 SN7495 BC108 BD241 1N4004

• Wave bands
• - without

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

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Memo-Key ETM-4M - Samson, Margot; Osburg

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 100 x 60 x 185 mm / 3.9 x 2.4 x 7.3 inch

• Notes
• Samson Memo-Key ETM-4M.
  12 TTL-ICs, 1× 512-Bit-MOS-Schieberegister (1024 Bit gegen Aufpreis).
  Elektronische Morsetaste nach DJ2BW; Squeeze-Paddle; Read/Write-Schalter mit Start/Stop-Switch, Speed-Regler mit Ein/Aus-Schaltfunktion; Cinch-Ausgang für Keying und Sidetone; Tastausgang mit Reed-Relais, max. 400 V, max. 1 A, max. 30 W.
  Halbleiter-Liste: 1x pro Typ angegeben.

• Net weight (2.2 lb = 1 kg)
• 1.4 kg / 3 lb 1.3 oz (3.084 lb)

• Price in first year of sale
• 388.00 DM

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Bernd P. Kieck. See "Data change" for further contributors.

• Other Models

• Here you find 19 models, 17 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Samson, Margot; Osburg