Siemens model: 661 este in perfecta stare de funcționare e toate lungimile de undă . Number of Transistors
Semiconductors present.

Semiconductors

Main principle
Superhet, double/triple conversion; ZF/IF 55845 kHz

Wave bands
Broadcast, Long Wave, more than 2 x SW plus FM or UHF.

Power type and voltage
Line / Batteries (any type) / 220 / 6 x 1,5 Volt

Loudspeaker
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9 cm = 3.5 inch

Power out
1 W (unknown quality)

Material
Plastics (no bakelite or catalin)

from Radiomuseum.org
Model: World Band Receiver RK651 - Siemens & Halske, -Schuckert

Shape
Portable set > 8 inch (also usable without mains)

Dimensions (WHD)
290 x 160 x 65 mm / 11.4 x 6.3 x 2.6 inch

Notes
auch vertrieben als
Sangean ATS-803A (eine verbesserte Version des ATS-803 / Siemens RK-641)
verfügt über 2 schaltbare ZF-Bandbreiten und verbesserten Dynamik-Bereich)
Siemens RK-651
Intersound-WE12
Realistic DX-440
Eskab RX-33

Empfangsbereich AM: 150 - 29999 kHz
AM, SSB(BFO)
2 schaltbare Bandbreiten
direkte Frequenzeingabe
9 Frequenzspeicher
Digitaluhr / Timer (zusätzliche 2 x 1,5 V Batterien notwendig)

Net weight (2.2 lb = 1 kg)
1.3 kg / 2 lb 13.8 oz (2.863 lb)

Price in first year of sale
169.00 $

Author
Model page created by Peter Böhm. See "Data change" for further contributors.

Other Models

Here you find 2543 models, 2154 with images and 1347 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.