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Chatham "Doghouse" RA-103

Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721971) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721973) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721965) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721966) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721967) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721972) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721963) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721964) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721968) TV Radio
 
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 721969) TV Radio
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832681) TV Radio Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832687) TV Radio
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832686) TV Radio Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 632011) TV Radio
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 730376) TV Radio Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832682) TV Radio
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832683) TV Radio Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832684) TV Radio
Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832685) TV Radio Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 1622802) TV Radio
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Chatham 'Doghouse' RA-103; DuMont Labs, Allen B (ID = 832681) TV Radio
DuMont Labs, Allen B: Chatham "Doghouse" RA-103 [TV Radio] ID = 832681 855x612
Select picture or schematic to display from thumbnails on the right and click for download.
For model Chatham "Doghouse" RA-103, DuMont Labs, Allen B., Inc.:
Picture courtesy of Bob Gatarz.
 
Country:  United States of America (USA)
Manufacturer / Brand:  DuMont Labs, Allen B., Inc.
alternative name
 
Dumont Television & Radio
Year: 1947 Type: Television- and Radio Receiver, perh. also + Rec. etc. (TV Radio)
Valves / Tubes 28: 6J6 6AK5 6J6 6AG5 6AG5 6AG5 6AL5 6AC7 12JP4 6AU6 6AU6 6AL5 6SJ7 6V6GT 6AL7GT 6SN7GT 6SJ7 6AL5 6K6GT 6SN7GT 6SN7GT 6AC7 6BG6G 1B3GT 5V4G 5U4G 5U4G 6AL5
Principle Super-Heterodyne (Super in general); ZF/IF 26400 21900 kHz
Wave bands Wave Bands given in the notes.
Details
Power type and voltage Alternating Current supply (AC) / 105-129 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm
Power out
from Radiomuseum.org Model: Chatham "Doghouse" RA-103 - DuMont Labs, Allen B., Inc.
Material Wooden case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 23.5 x 17 x 19.75 inch / 597 x 432 x 502 mm
Notes The DuMont RA-103 series of televisions (or "Telesets" as DuMont called them) are popular with collectors because of their high quality electrical design and interesting cabinets. All RA-103 models have a 12 inch round CRT and a continuous tuner with a triple roller inductor that covers the VHF low, FM radio, and VHF high bands in one continuous range (44-216 MHz). The tuner is a Mallory "Inductuner" and was referred to as an "Inputuner" by DuMont.

Early versions of the RA-103 had a 6U5GT or 6G5GT tuning eye (according to Rider TV vol. 1), but most sets found today have a 6AL7GT tuning eye as original equipment.

The first models of the RA-103 family were introduced in 1947. The RA-103 Chatham, a mahogany table model with an unusual trapezoidal shape (nicknamed the "Doghouse") seems to be the most commonly found today. The RA-103 Stratford is a table model with doors (see Rider TV vol. 1). The RA-103 Meadowbrook is a mahogany console with no doors, the CRT in the upper left, and a 10-inch speaker center bottom. The RA-103 Savoy is a larger mahogany AM/FM/TV/Phono console with doors, having the CRT top center, AM tuning dial on the left, FM/TV tuning dial on the right, speaker bottom left, and phonograph bottom right. The Rider TV index also lists an RA-103 Sutton, but no further information about this model is available.

The series was updated at some point with the RA-103C Savoy (same cabinet as RA-103 Savoy) and the RA-103C Winthrop (similar to Savoy, but with knotty pine cabinet).

In 1949, the RA-103D series was introduced, with significant circuitry changes and some different tubes. The RA-103D Rumson is a mahogany table model with a rectangular profile and a square tuner window (prior to the RA-103D models, the TV/FM tuning windows were round). There are also two consoles, the RA-103D Sheffield and RA-103D Canterbury, both of which are known to be consoles because of their 10-inch speakers documented in Rider TV vols. 3 and 4. The RA-103D chassis is very similar to the chassis used in the RA-104A Hastings and RA-110A Wellington sets, which had 15-inch and 19-inch CRTs, respectively.
Net weight (2.2 lb = 1 kg) 84 lb (84 lb 0 oz) / 38.136 kg
Price in first year of sale 445.00 $
Collectors' prices  
Circuit diagram reference Photofact Folder, Howard W. SAMS
Mentioned in (US) Radio & Television Retailing Dec. 1947
Literature/Schematics (1) Rider TV vol. 1-58; SAMS set 90 folder 3

Model page created by . See "Data change" for further contributors.

All listed radios etc. from DuMont Labs, Allen B., Inc.
Here you find 194 models, 90 with images and 155 with schematics.


  
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