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Radio-Tukker
(founded by
T.H. Tukker) began
manufacturing and
selling
radios around
1926. The
company was
established at
Achter
de Waag in
Gouda. |
The Bio-Sonora
radiogram |
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A family member,
J. A. Tukker,
also sold Sonora radios in his
shop in
Gorinchem. |
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The Tukker electrodynamic
loudspeaker |
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Radio-Tukker
used
the brand name
Sonora. The
first device that was
advertised
was the THT Sonora
4, a four valve TRF
receiver, which
was presented
in 1926. This
Sonora
receiver was further improved
each year.
In 1927 the
company
introduced
the Solodyn-Sonora,
a device with one-knob
tuning, and
at the Rotterdam
Radio
Exhibition in 1928,
the Bio-Sonora was presented,
a radio
gramophone combination with a
cabinet
made of
Slavonian oak (opposite
right, on a
picture from the magazine
Radio Wereld,
September 20, 1928). At the
exhibition, Tukker also presented
an
electrodynamic loudspeaker
with field excitation
he
developed himself, on which a
Dutch patent
was applied
(photo left).
In 1930,
Radio-Tukker presented a number of
AC
radios:
the Sonora
four-valve
AC
radio
with one-knob
tuning and
6 watt power tube, a radio
gramophone |
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combination with
a 10 watt
power tube, a
smaller three-valve
AC unit
and a new
Sonora
electrodynamic
loudspeaker. |
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