With blue crackle painted metal front
plate.Between
the two tuning scales is a gold-coloured print with the
word "Ronofoon". For medium
wave and long wave.
Equipped with a rectifier, a high frequency tube, a
detector and a low-frequency tube.
The radio was made by the Waldorp company
in The Hague. It has a Philips
license sticker.
The knobs from left to right: position
switch for volume control (see information below), primary tuning, wavelength
switch (two medium wave ranges and long wave), secondary
tuning, feedback.
At the rear, connections for a
loudspeaker, a gramophone, a ground and an antenna.
The chassis above was originally part of a
cabinet.
The standard version can be seen on the right. (Radio:
Carl Schniermanni)
The original price was f 230,-
The first four
positions of the volume control knob are connected to the
coupling coil taps; in the last position the coupling
coil is bridged.In this position, the switch is
connected to the output of the left-hand coil block.Only the tuned circuit is parallel. Sensitivity
is then optimal.
Data
Valves
Circuit
Serial number:
80258 license 29935
Dimensions (w×h×d):
39 × 18.5 × 22 cm
Cabinet:
47 x 23 x 24.5 cm
Made in:
1930
Purchased in:
2018
Voltage:
220 volt ~
Click on a valve for
more information
Click on the circuit to
enlarge
What was broadcast in 1930?
Listen to "Crazy
Pirouette" by Stan Greening and his Orchestra, recorded
on February 6,
1930
Top view
The chassis has a Philips license plate on the back of the front plate.
The primary
tuning coil
On the left the position switch for the
volume, the tuning capacitor and the coils
for long and medium wave.The beautifully wound
honeycomb coil is the coupling coil.
Advertisement in BORN, July 11, 1930
Probably to show how high the license was
that had to be paid to Philips, Van Roon explicitly
mentions the price of the radio with and without license
in this advertisement.