Trans-Oceanic (TransOceanic) H500 Ch= 5H40 (undefined variant)

Zenith Radio Corp.; Chicago, IL

  • Year
  • 1951–1953
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • ID
  • 68209
    • alternative name: Chicago Radio Lab

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superhet with RF-stage; ZF/IF 455 kHz
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Line / Batteries (any type) / AC/DC 110; 220; Batt.9 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.25 inch = 13.3 cm
  • Material
  • Leather / canvas / plastic - over other material
  • from
  • Model: Trans-Oceanic H500 Ch= 5H40 - Zenith Radio Corp.; Chicago,
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 430 x 280 x 200 mm / 16.9 x 11 x 7.9 inch
  • Notes
  • The different revision versions can only be distinguished if the chassis back is visible. Here is the place for such undefined set pictures.

    See also the article here.
    Siehe auch den Artikel hier.
    Si veda anche l'articolo in questa pagina. Battery Pack No. Z-985 ( 9 & 90 V DC). 220 V mains only with power adapter inserted.
  • Net weight (2.2 lb = 1 kg)
  • 8 kg / 17 lb 9.9 oz (17.621 lb)
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 22, covering 1951
  • Literature/Schematics (1)
  • Bryant/Cones: The Zenith Trans-Oceanic

 Collections | Museums | Literature


Forum contributions about this model: Zenith Radio Corp.;: Trans-Oceanic H500 Ch= 5H40

Threads: 4 | Posts: 4

When I compared the two H500 Trans Oceanics from my collection, there is a remarkable difference concerning the power supply:


On one set, I find the power selector for 110 V AC-DC, 220 V DC and 220 V AC;

between the power lead and the phones jack, there is a switch labelled "SEE INSTRUCTION BOOK".

On the other Set, I find no such selector;

there is no switch, but there is "INSERT A.C. PLUG HERE FOR BATTERY OPERATION" engraved in the chassis.

The model with the power selector (with the black cabinet (power resistor ?) is the one found in J. Bryant and H. Cones' Book, the other model is the one found in Sam's Photofact (found at BAMA), it has no traces of the switch having been removed, so I consider it two genuine variants.

You may encounter both models when having a look at the images from our members.
Kind regards Martin Boesch

Martin Bösch, 13.Sep.08

Weitere Posts (1) zu diesem Thema.

Der Einführungspreis von $ 99,95 stieg bis zur Weihnachtssaison 1951 auf $ 124,25, wo er dann gehalten wurde.

Konrad Birkner † 12.08.2014, 30.Mar.04

Weitere Posts (1) zu diesem Thema.

There was in 1953 a 5th edition (Revision D) of H500 with an additional socket for an optional 50A1 voltage regulator tube. In the empty socket was a jumper plug which enables a 1.200 ohm resistor when no 50A1 was used. So with the installed 700 ohm restistor and the additional 1.200 ohm resistor the heater circuit had the same resistance like the standard H500 circuit with 2 * 950 ohm resistors.

It's likely this last H500 edition was a test series for the RR-520 or it were just spare chassis of this which were used in the standard H500 cabinet. But in difference to RR-520 this chassis isn't using tube shields or a shielded RF-head, and it has no dial light.

Ralf Sürtenich, 23.Mar.04

Weitere Posts (1) zu diesem Thema.

$ 99.95 was the introductory price which then jumped up to $ 124.25 for Christmas 1951 and later.

Konrad Birkner † 12.08.2014, 23.Mar.04

Weitere Posts (1) zu diesem Thema.