- Country
- Germany
- Manufacturer / Brand
- Lumophon, Bruckner & Stark, Nürnberg
- Year
- 1939/1940
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 3386
-
- Brand: Lumeta
ebay 6602245503
ebay 6602245503
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 5
- Main principle
- Superheterodyne (common); ZF/IF 468 kHz
- Tuned circuits
- 7 AM circuit(s)
- Wave bands
- Broadcast, Long Wave and Short Wave.
- Power type and voltage
- Alternating Current supply (AC) / 110-240 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: WD507 - Lumophon, Bruckner & Stark,
- Shape
- Tablemodel, low profile (big size).
- Dimensions (WHD)
- 630 x 322 x 335 mm / 24.8 x 12.7 x 13.2 inch
- Notes
- variable Bandbreite; Rheinland=ZF 473 kHz.
- Net weight (2.2 lb = 1 kg)
- 17 kg / 37 lb 7.1 oz (37.445 lb)
- Price in first year of sale
- 248.00 RM
- Source of data
- Handbuch WDRG 1939 / Radiokatalog Band 1, Ernst Erb
- Circuit diagram reference
- Lange+Schenk+FS-Röhrenbestückung
- Picture reference
- Das Modell ist im «Radiokatalog» (Erb) abgebildet.
- Other Models
-
Here you find 302 models, 254 with images and 200 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Lumophon, Bruckner & Stark, Nürnberg
Forum contributions about this model: Lumophon, Bruckner &: WD507
Threads: 1 | Posts: 2
Hi,
If someone could help me with the hum in supply circuit in wd 507?
Problem: After turning on the radio, great hum voltage appears on "Feld" coil. The hum voltage is about 20 - 30 Vpp. The supply voltage on cathod of az11 drops below 180 V. New tubes were applied, but the problem was the same. All passive elements in supply unit and around of el12 are ok. The hum is very loud in speaker.
We tried to replace capacitor 0,2 uF parallel to feld coil with 220 uF and the hum was gone and the supply voltage (cathode az11) was below 160 V (which is not enough to supply el12).
Question: What is the maximum hum voltage (peak to peak) allowed in supply circuit of wd 507?
Thank you,
Nikola
Nikola Matkovic, 18.Jun.10