B-504 battery-line operated
DeWald Radio Mfg. Corp., Pierce Airo Inc.
- Land
- USA
- Hersteller / Marke
- DeWald Radio Mfg. Corp., Pierce Airo Inc.
- Jahr
- 1948
- Kategorie
- Rundfunkempfänger (Radio - oder Tuner nach WW2)
- Radiomuseum.org ID
- 37732
-
- Marke: Pierce Airo
SAMS Photofact 8/48 Folder 4813-9 Set 43
From Canadian eBay seller 11_milehouse.
From Canadian eBay seller 11_milehouse.
From Canadian eBay seller 11_milehouse.
Klicken Sie auf den Schaltplanausschnitt, um diesen kostenlos als Dokument anzufordern.
- Anzahl Röhren
- 4
- Hauptprinzip
- Superhet allgemein; ZF/IF 455 kHz; 2 NF-Stufe(n)
- Anzahl Kreise
- 6 Kreis(e) AM
- Wellenbereiche
- Mittelwelle, keine anderen.
- Betriebsart / Volt
- Netz- / Batteriespeisung / 117;4.5;67.5 Volt
- Lautsprecher
- Dynamischer LS, keine Erregerspule (permanentdynamisch)
- Material
- Plastik oder Bakelit
- von Radiomuseum.org
- Modell: B-504 [battery-line operated] - DeWald Radio Mfg. Corp.,
- Form
- Reisegerät > 20 cm (netzunabhängig betreibbar)
- Bemerkung
- Built-in loop antenne as first RF circuit. Selenium rectifier.
- Datenherkunft extern
- Ernst Erb
- Datenherkunft
- Collector's Guide to Antique Radios (6th edition)
- Schaltungsnachweis
- Rider's Perpetual, Volume 18 = 1949 and before
- Literaturnachweis
- The Radio Collector's Directory and Price Guide 1921 - 1965
- Literatur/Schema (1)
- Machine Age to Jet Age II
- Literatur/Schema (2)
- Table Top Radios Vol. 4 Stein 2003
- Literatur/Schema (3)
- Plastic Radios - The Antique Radio Collectors' Source Book
- Literatur/Schema (4)
- Photofact Folder, Howard W. SAMS (Set 43, Date 8/48, Folder 4813-9)
- Weitere Modelle
-
Hier finden Sie 442 Modelle, davon 195 mit Bildern und 344 mit Schaltbildern.
Alle gelisteten Radios usw. von DeWald Radio Mfg. Corp., Pierce Airo Inc.
Sammlungen
Das Modell B-504 befindet sich in den Sammlungen folgender Mitglieder.
Forumsbeiträge zum Modell: DeWald Radio Mfg.: B-504
Threads: 1 | Posts: 4
Ok, I pretty much a nubie here folks. I did a search on the forum and I did not see a hit, so I started here. I hope this is correct.
I have a few questions on this 1948 DeWald B-504. I know to replace all the capacitors. I laughed when I Googled the two batteries. I got nothing and it said pretty much that.
I just came across this gem and the 4 1/2 volt battery still read 3.5 vdc. Geeze after some 70 years! I believe these two batteries are original. Im sure no one has been in this radio since it was sold in 1948 best I can tell.
First question, should I replace the selenium rectifier? If so, this is done with a diode and a resistor? What values are these? I read somewhere that these gismos can catch fire?
Secondly, I supose I could come up with a power supply to test the batterys that are not available?
Any hints or kinks that anyone may have would be greatly appriciated.
Thanks.....Justin-
Justin McKeever, 15.Feb.24