radio Loewe Ortsempfänger OE333 tube 3nf battery set german wooded ultra rare

Description

This radio Loewe Ortsempfanger OE333 is a simple single-circuit with the possibility of local loudspeaker reception.
The Loewe OE333 is the first radio with the first integrated circuit in the history
Special is the tube used here, a Loewe 3Nf. where 3 l.f. triodes, 4 resistors and 2 capacitors are integrated into a broadband amplifier.
The first triode works here as an anode detector. The sound volume is adjustable by tilting the antenna coil.
The on / off switch with two push buttons is located on top of the device, as well as the tuning knob.
This receiver was also available in a Bakelite cabinet from 1928. this is the wooden version in the listing. I sell the wooden version as per listing pictures
The Loewe OE333 is the first radio with the first integrated circuit in the history
the Loewe 3NF incorporates three triodes, two capacitors and four resistors in a single glass envelope. The inclusion of  the passive components reduced the number of pins required to six, but to avoid them contaminating the vacuum, they are each sealed inside a glass tube.
One of the reasons for the development of this amazing device was that in Germany, there was a tax on receivers based on the number of valves in the set, so in 1926, Loewe Radio A.G introduced the 3NF, and also another multi-valve, the 2HF, which contained  two screen-grid tetrodes, two resistors and a capacitor, intended for use as a two-stage RF amplifier. The original Loewe multi-valves are masterpieces of glasswork, which must have been very expensive to manufacture, so later versions used a mica supports, and the glass was given an aluminium outer coating to hide the less elegant internal structure. An obvious drawback of putting three valves in a single envelope is that if one filament fails, the whole device becomes useless, but to counter this disadvantage, Loewe offered a repair service to replace failed filaments.
Loewe-Radio Radiofrequenz G.m.b.H., Berlin-Friedenau
Country of origin Germany
Proper name Ortsempfanger
Type OE333
Serial number unknown
Year of construction 1926
Broadcast receiver application
Wave range 200-2000 meters, depending on tuning coil
MW: 75 turns, LG: 150-200 turns
Tuning tuning with variable mica capacitor
Scales aluminum scale with 0-180 graduations on dial
Circuit det + 2xlf
Number of circuits 1
center-to-center distance coil pins 19 mm
Center frequency none
Antenna plug-in coupling coil 25-500 turns
earth and antenna connection on adjustable holder
Number of lamps 1
Type of lamps Loewe 3Nf.
After screwing in a Loewe 2Hf. tube, the device works as h.f. attachment
Anode voltage + 90-150 Volt, n.r.s. -1.5 and -6 Volt, via connection cables for dry battery
Glow voltage 4 V, 0.35 A, via lead battery connection cables
Loudspeaker connection for high impedance loudspeaker at the front Chassis none, output power 500mW at 150 Volt
Front plate no
Casing oak cabinet with loose bottom, stained brown
Dimensions wxhxd 18x5x13 cm excluding tube 3Nf. and rinse
Weight 900 g
Selling price Hfl 29.65, R.M. 39.50 (D), Sch 145 (A)
Production period 1926-1932
Particularities all l.f. components integrated in Loewe 3Nf. tube: 3 triodes + 4 resistors + 2 capacitors in one tube
adjustable antenna coupling with adjustable coupling coil
on-off switch
The necessary loudspeaker, lead battery, anode battery and grid voltage battery had to be purchased separately, not included in this listing
Shipping will be done as always with extra care with full protection of each part m tube especially
it comes with an extra coil as per pictures