In dark brown polished wooden
case with silver plated solid brass knobs, and scale
frame, illuminated scale, with
station names printed in two colours (black - medium
wave and red - long wave). Three decorative black
bars are arranged in front of the loudspeaker. The receiver has five
The knobs from left to
right: wave length switch, tuning, on/off/volume.
Receives on medium
wave (192-570 meters) and long wave (770-1920 meters).
The intermediate frequency is 152 kHz.
band-pass filter and anti-fading. The
loudspeaker, with field excitation coil, has a diameter
of 20 cm.
At the rear are two antenna connections,
earth, a tone switch with two positions, a connection for an additional
loudspeaker and a pick-up connection. The correct mains voltage can
be set by means of a white porcelain plug with a built-in
The radio plays well on
the "short" side of the scale, but the sensitivity
decreases quickly on the long side.This is due to the band filter type.It is a filter that is actually
designed to filter on a fixed frequency, but in this
receiver it is applied for an adjustable frequency. There is a top capacitor of 10 pF in
one of the coil buses, while there is no inductive
coupling between the coils, and also no base capacitor.So it seems to be a somewhat flawed
design. With the same coils and an extra resistance it
could work much better.In
1935, a band filter was still new;the most sophistcated
design at the time was Varley's (with inductive coupling
and a 100 ohm resistor).
a picture from a product leaflet for the
price was BFr 1295,-.
The luxury version
(650L) has a somewhat finer cabinet, a different tone
control and a wavelength indicator.The price was
BFr 1550, -.