In January the VS 200 was
available in quantities. Selected devices of the VS 200 were the VS 220 and
221, which had higher collector voltages of up to 50 volts. All the other
big names of the German electronic scene still had no transistors on their
One year was gone and at the
next Industrial Fair in Hannover in May of 1953 Dr. Rost Labs presented an
“oscillator transistor“ which worked up to 10 MHz. It was the G2T.
On the same exhibition
TELEFUNKEN showed its first developments of labor samples of transistors to
the radio manufacturing industry. Also the SIEMENS & HALSKE company
announced research & development on the semiconductor field. (SIEMENS
& HALSKE was the electronic-subsidiary of SIEMENS AG.) In a
house-intern publication in May of 1954 TELEFUNKEN reported about how to
use and develop point-contact-transistors.
In October of 1953 the German
hearing aid company Wendton offered a hybrid-set with two tubes DF 64 and
one transistor. As none of the German manufacturers was able to deliver a
suitable device they employed a CK718 of Raytheon to the audio output stage
of this “Wensistor 530“ hearing aid.