604C

Philco, Philadelphia Stg. Batt. Co.; USA

Data
Forum
Pictures
Collections

  • Year
  • 1936
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 51092

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 460 kHz; 2 AF stage(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • AC/DC-set / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Power out
  • 0.75 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 604C - Philco, Philadelphia Stg. Batt
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Notes
  • The Philco model 604C (1936) is a compact 5-tube 2-band AC/DC receiver with a unique cabinet design. An upward-facing bakelite panel with controls covers the top of the compact rectangular wooden cabinet with rounded corners, which is finished on all sides. Band coverage is BC and 6-18 MHz. The circuit uses a 1-volt bias cell in the first audio stage.

    Model 37-604C (1936-37) is similar in both cabinet and electrical design, but with updated tube types.
  • Price in first year of sale
  • 40.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 7 = 1936 and before

 Collections | Museums | Literature

 Forum

Forum contributions about this model: Philco, Philadelphia: 604C

Threads: 2 | Posts: 17

Hi, All:

Working on a very unique Philco 604 I paid too much for on ebay.  I was working on a recap and ran into something I didn't recognize, so downloaded the schematics and parts list for the philco 604C listed on this web site.  Turns out it is called a "1 volt bias cell".  Seriously?  There is a battery in the darn thing to bias a tube?  You gotta be kidding.  Not easy to get to either.  I wonder how often that had to be replaced?

Anyhow, does anyone have any idea for a solution to this?  Fairly sure they are not available.  I don't even know what chemistry a 1 volt cell would be.  Mercury? 

The schematic I downloaded from the Radio Museum is in PDF, but it won't let me upload it to this post, so please search the 604 C listed in the RM database.

Also, if anyone knows where I can get a 604 schematic, that would be nice.  This thing has been worked on quite a bit, and I think I might just need one.  There appear to be a few differences to the 604C schematic I am using.  Of course, there could be work-on-it-itis, as my first boss used to say.

Many thanks in advance!

Mike

Attachments

Michael Boessen, 27.Mar.18

Weitere Posts (14) zu diesem Thema.

Hi, All:

Working on a very unique Philco model 604 table radio.  What a strange radio design!!  One problem I have is that the dial is damaged.  I have had no luck finding one of these.  Can anyone give me any guidance as to who might have one, or be able to repair mine?

Thanks!

Mike Boessen

Attachments

Michael Boessen, 20.Mar.18

Weitere Posts (3) zu diesem Thema.