Carrier, telegraph

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Ingenium, 1982.0806.001
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OBJECT TYPE: VFC/FREQUENCY SHIFT/TUBE/RO
DATE: 1950
ARTIFACT NUMBER: 1982.0806.001

MANUFACTURER: RADIO FREQUENCY LABS INC.
MODEL: Unknown
LOCATION: Boonton, New Jersey, United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: SHEET METAL CHASSIS, MOUNTING BRACKETS & COVER. GLASS, METAL & SYNTHETIC COMPONENT PARTS Cadmium and lead solder present

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 48.6 cm
Width: 9.1 cm
Height: 23.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Telegraphy
Sub-Category: N/A

Manufacturer

AKA: RADIO FREQUENCY
Country: United States of America
State/Province: New Jersey
City: Boonton

Context

Country: North America
State/Province: Unknown
Period: THIS TYPE OF CARRIER USED C. 1950-1960
Canada: Unknown
Function: TO RECEIVE FREQUENCY MODULATED TELEGRAPH SIGNALS IN THE VOICE FREQUENCY SPECTRUM, AND CONVERT THEM TO DIRECT CURRENT TELEGRAPH SIGNALS (PROBABLY 45.5 BAUD SIGNALS)
Technical: EXAMPLE OF AN EARLY VOICE FREQUENCY, FREQUENCY SHIFT TELEGRAPH REPEATER. DEVICES SIMILAR TO THIS UNIT WERE USED TO DEVELOP POINT-TO-POINT TELEGRAPH CHANNELS VIA A STANDARD TELEPHONE FACILITY. (IN 1990S MODEMS USED TO DEVELOP COMPUTER CHANNELS).
Area Notes: Unknown

Details

Markings: 'RADIO FREQUENCY LABS., INC. BOONTOON, NEW JERSEY, U.S.A.'STAMPED ON INTERNAL COMPONENT COVER. ALONG WITH 'RFL' LOGO. VARIATION OF CO. NAME ALSO STAMPED ON FILTER BAND BRASS COMPONENT. VARIOUS COMPONENT PARTS LABELLED OR OTHERWISE IDENTIFIED.
Missing: POWER FILTER PANEL; POWER RECTIFIER TUBE
Finish: PERFORATED COVER HAS GREY HAMERLIN ENAMEL FINISH. STEEL CHASSIS HAS PICKLED OR ANODIZED FINISH
Decoration: N/A

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RADIO FREQUENCY LABS INC., Carrier, telegraph, circa 1950, Artifact no. 1982.0806, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingenium.ca/en/id/1982.0806.001/

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