1928 model

Neutrowound Radio Mfg. Co.; Homewood

Daten
Forum
Bilder
Sammlungen

  • Jahr
  • 1927
  • Kategorie
  • Rundfunkempfänger (Radio - oder Tuner nach WW2)
  • Radiomuseum.org ID
  • 49694

 Technische Daten

  • Anzahl Röhren
  • 6
  • Hauptprinzip
  • Geradeaus ohne Rückkopplung
  • Anzahl Kreise
  • 3 Kreis(e) AM
  • Wellenbereiche
  • Mittelwelle, keine anderen.
  • Betriebsart / Volt
  • Akku und/oder Batterie
  • Lautsprecher
  • - Dieses Modell benötigt externe(n) Lautsprecher.
  • Material
  • Metallausführung
  • von Radiomuseum.org
  • Modell: 1928 model - Neutrowound Radio Mfg. Co.;
  • Form
  • Tischmodell, Zusatz nicht bekannt - allgemein.
  • Abmessungen (BHT)
  • 860 x 150 x 220 mm / 33.9 x 5.9 x 8.7 inch
  • Bemerkung
  • Two pointer tuning knobs.
  • Nettogewicht
  • 10 kg / 22 lb 0.4 oz (22.026 lb)
  • Datenherkunft extern
  • Ernst Erb

 Sammlungen | Museen | Literatur

 Forum

Forumsbeiträge zum Modell: Neutrowound Radio: 1928 model

Threads: 1 | Posts: 3

I've been wrestling with a 28 and a hand drawn schematic from Radio Museum.
I believe there has to be an error in the ground/common between the 2 front end RF amps and the rest of the radio. The radio wiring is correct against the schematic. However, the radio was previously updated at detector transformer and the dual 0.5uf caps.
Using an ARBEIII the radio has some strange behavior. The connection of my ground rod at the 100ft long wire causes loud 60hz hum. Removing the ARBE's 3rd wire green stops the hum. The sensitivity is very low. Antenna, tubes, power are correct and used in a Deforest MR-6

What concerns me is the lack of consistent grounding. The dual caps have common ground yet are not directly tied to the radio's common ground

If anyone has a few minutes and possible knows this radio can you take a look at the schematic grounding and see if that looks correct or if an drawing error exists.
Thanks in advance
Jack KG6INX

Jack McMullen, 23.Jun.15

Weitere Posts (3) zu diesem Thema.