250 (AC-DC)

Colonial Radio Co.; Long Island and Buffalo, NY

Data

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Pictures

Collections

Country
United States of America (USA)

Manufacturer / Brand
Colonial Radio Co.; Long Island and Buffalo, NY

Year
1933 ?

Category
Broadcast Receiver - or past WW2 Tuner

Radiomuseum.org ID
168203

Picture
Schematics

250 ; Colonial Radio Co.; (ID = 718303) Radio — Colonial Radio Co.; 250 (3)

250 ; Colonial Radio Co.; (ID = 718304) Radio — Colonial Radio Co.; 250 (3)

250 ; Colonial Radio Co.; (ID = 718305) Radio — Colonial Radio Co.; 250 (3)

250 ; Colonial Radio Co.; (ID = 718306) Radio — Colonial Radio Co.; 250 (3)

250 ; Colonial Radio Co.; (ID = 718307) Radio — Colonial Radio Co.; 250 (3)

250 ; Colonial Radio Co.; (ID = 718308) Radio — Colonial Radio Co.; 250 (3)

250 ; Colonial Radio Co.; (ID = 1402886) Radio — Colonial Radio Co.; 250 (2)

250 ; Colonial Radio Co.; (ID = 1442618) Radio — Colonial Radio Co.; 250 (1)
Furnierschäden, linker Knopf fehlt

250 ; Colonial Radio Co.; (ID = 1442619) Radio — Colonial Radio Co.; 250 (1)
Netzkabel nicht original

250 ; Colonial Radio Co.; (ID = 1442620) Radio — Colonial Radio Co.; 250 (1)

250 ; Colonial Radio Co.; (ID = 1442622) Radio — Colonial Radio Co.; 250 (1)
Aufkleber Rückwand Innenseite

250 ; Colonial Radio Co.; (ID = 1442623) Radio — Colonial Radio Co.; 250 (1)

250 ; Colonial Radio Co.; (ID = 1442624) Radio — Colonial Radio Co.; 250 (1)

250 ; Colonial Radio Co.; (ID = 1442625) Radio — Colonial Radio Co.; 250 (1)
Abdeckung abgeschraubt

250 ; Colonial Radio Co.; (ID = 1442626) Radio — Colonial Radio Co.; 250 (1)

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

Technical Specifications

Number of Tubes
5

Valves / Tubes
6A7 6B7 77 43 25Z5

Main principle
Superheterodyne (common); ZF/IF 175 kHz

Tuned circuits
7 AM circuit(s)

Wave bands
Broadcast only (MW).

Power type and voltage
AC/DC-set / 115 Volt

Loudspeaker
Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 13 cm = 5.1 inch

Material
Wooden case

from Radiomuseum.org
Model: 250 - Colonial Radio Co.; Long

Shape
Tablemodel, low profile (big size).

Dimensions (WHD)
292 x 200 x 138 mm / 11.5 x 7.9 x 5.4 inch

Notes
Switch for AC or DC operation; the +B voltage is doubled in AC operation; 154 Ohm resistance line cord.

Maße über Alles

Net weight (2.2 lb = 1 kg)
4 kg / 8 lb 13 oz (8.811 lb)

Circuit diagram reference
Rider's Perpetual, Volume 4 = ca. 1934 and before

Mentioned in
Table Top Radios Vol. 1 Stein 98 (page 49.)

Literature/Schematics (1)
Machine Age to Jet Age II (page 82.)

Author
Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

Other Models
Here you find 165 models, 74 with images and 131 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Colonial Radio Co.; Long Island and Buffalo, NY

Collections | Museums | Literature

Collections

The model 250 (AC-DC) is part of the collections of the following members.

Manfred Rathgeb (D)

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