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radio induction coil

Measurements:
overall: 24 in x 7 3/4 in; x 60.96 cm x 19.685 cm
Object Name:
Coil, Induction
induction coil
Other Terms:
Coil, Induction; Electromagnetic Devices; Magnetic Devices; Electromagnetic Devices
Date made:
1917
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313599
Catalog number:
313599
Accession number:
188571
Collector/donor number:
R-2243
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ab-6bf6-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705553

Wireless Specialty crystal radio frequency detector

Maker:
Wireless Specialty Apparatus Co.  Search this
Measurements:
overall: 4 1/4 in x 5 in; 10.795 cm x 12.7 cm
Object Name:
Detector
radio receiver
crystal radio
Other Terms:
Detector; Radio
Place made:
United States: New York, New York City
Date made:
ca 1910
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313592
Accession number:
188571
Catalog number:
313592
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ac-9419-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705664

Philmore fixed cystal radio frequency detector

Maker:
Wireless Specialty Apparatus Co.  Search this
Philmore Manufacturing Co., Inc.  Search this
Measurements:
overall: 1 in x 1/2 in; 2.54 cm x 1.27 cm
Object Name:
Detector
radio receiver
crystal holder
Other Terms:
Detector; Radio
Place made:
United States: New York, New York City
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313610
Accession number:
188571
Catalog number:
313610
Collector/donor number:
120
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-25a6-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705672

Wireless Specialty crystal radio frequency detector

Maker:
Wireless Specialty Apparatus Co.  Search this
Measurements:
overall: 1 in x 2 in x 3/4 in; 2.54 cm x 5.08 cm x 1.905 cm
Object Name:
Detector
radio receiver
crystal radio
Other Terms:
Detector; Radio
Place made:
United States: New York, New York City
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313609
Accession number:
188571
Catalog number:
313609
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2897-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705675

Wireless Specialty fixed crystal radio frequency detector

Maker:
Wireless Specialty Apparatus Co.  Search this
Measurements:
overall: 1 in x 1.25 cm; 2.54 cm x 1/2 in
Object Name:
Detector
radio receiver
crystal holder
Other Terms:
Detector; Radio
Place made:
United States: New York, New York City
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313611
Accession number:
188571
Catalog number:
313611
Collector/donor number:
121
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2898-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705677

Magnavox loudspeaker horn for LS-2 "Telemegafone"

Maker:
Magnavox Company  Search this
Measurements:
overall: 18 1/2 in x 8 in x 6 1/2 in; 46.99 cm x 20.32 cm x 16.51 cm
Object Name:
Loudspeaker
loudspeaker horn
Other Terms:
Loudspeaker; Audio Devices
Date made:
ca 1923
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313494
Catalog number:
313494
Collector/donor number:
BS 30953
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ab-dc33-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705721

U.S. Army Signal Corps type SCR-71 buzzer transmitter

Associated user:
unknown  Search this
Maker:
Western Electric  Search this
Measurements:
overall: 6 1/4 in x 7 in x 6 1/4 in; 15.875 cm x 17.78 cm x 15.875 cm
Object Name:
Transmitter
radio transmitter
Other Terms:
Transmitter; Radio
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313586
Catalog number:
313586
Accession number:
188571
Collector/donor number:
R-1974
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2ed7-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705764

Washington Navy Yard type SE-143 radio receiver

Maker:
National Electrical Supply Company  Search this
Measurements:
overall: 14 1/2 in x 23 in x 10 1/2 in; 36.83 cm x 58.42 cm x 26.67 cm
Object Name:
Receiver
Short wave receiver -- Navy
radio receiver
Other Terms:
Receiver; Radio
Date made:
1917
Associated date:
1917
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313601
Catalog number:
313601
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ae-2976-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705766

Ultra high frequency amplifier, uni-controlled transmission line-tuned

Maker:
Bureau of Standards  Search this
Measurements:
overall: 25 1/2 in x 11 1/2 in x 10 in; 64.77 cm x 29.21 cm x 25.4 cm
Object Name:
audio amplifier
Amplifier
Other Terms:
Amplifier; Radio
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313491
Catalog number:
313491
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2ed8-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705767

Quenched spark gap

Associated user:
unknown  Search this
Associated institution:
Bureau of Standards  Search this
Measurements:
overall: 5 3/4 in x 10 in; 14.605 cm x 25.4 cm
Object Name:
Spark Gap, Quenched
spark gap
Other Terms:
Spark Gap, Quenched; Components; Radio and Television; Radio and Television
Date made:
ca 1920
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313568
Catalog number:
313568
Accession number:
188571
Collector/donor number:
R-2219
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-233c-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705774

Chaffee quenched spark gap

Measurements:
overall: 5 1/2 in x 7 in; 13.97 cm x 17.78 cm
Object Name:
Spark Gap, Quenched
spark gap
Other Terms:
Spark Gap, Quenched; Components; Radio and Television; Radio and Television
Date made:
1917
Associated date:
1917
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313518
Catalog number:
313518
Accession number:
188571
Collector/donor number:
BS 10165
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-233d-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705775

Model of shielded standard coil

Measurements:
overall: 6 in x 5 1/2 in x 5 in; 15.24 cm x 13.97 cm x 12.7 cm
Object Name:
Coil, Standard
radio coil
Other Terms:
Coil, Standard; Components; Radio and Television; Radio and Television
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313502
Catalog number:
313502
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-3be2-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705788
Online Media:

Clapp-Eastham radio tuning coil

Maker:
Clapp-Eastham Co.  Search this
Object Name:
Coil, Antenna Tuning
tuning coil
Other Terms:
Coil, Antenna Tuning; Components; Radio and Television; Radio and Television
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313558
Catalog number:
313558
Accession number:
188571
Collector/donor number:
17
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2456-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705791
Online Media:

Tuned-reed aircraft navigational indicator

Associated user:
unknown  Search this
Associated institution:
Bureau of Standards  Search this
Object Name:
Instrument, Aircraft Navigational
aircraft instrument
Other Terms:
Instrument, Aircraft Navigational; Components; Radio and Television; Radio and Television
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313606
Catalog number:
313606
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-245c-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705798

Model A tuned-reed aircraft navigational indicator

Associated user:
unknown  Search this
Associated institution:
Bureau of Standards  Search this
Object Name:
Indicator, Aircraft Navigation
aircraft instrument
Other Terms:
Indicator, Aircraft Navigation; Components; Radio and Television; Radio and Television
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313608
Catalog number:
313608
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-245e-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705800

Friez type A reed indicator for radio ranging

Object Name:
Indicator, Radio Range
aircraft instrument
Other Terms:
Indicator, Radio Range; Components; Radio and Television; Radio and Television
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313619
Catalog number:
313619
Accession number:
188571
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-245f-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705801

Radio loading coil

Associated user:
unknown  Search this
Associated institution:
Bureau of Standards  Search this
Measurements:
overall: 8 1/4 in x 5 1/2 in; 20.955 cm x 13.97 cm
Object Name:
radio
inductance
Other Terms:
radio; Components; Radio and Television; Radio and Television
Associated date:
1922
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313525
Catalog number:
313525
Accession number:
188571
Collector/donor number:
R-1997
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ac-8380-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705802

General Electric model UL-1655 radio choke coil

Maker:
General Electric Company  Search this
Measurements:
overall: 4 1/2 in x 4 in; 11.43 cm x 10.16 cm
Object Name:
Coil
radio coil
inductance
Other Terms:
Coil; Components; Radio and Television; Radio and Television
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313549
Catalog number:
313549
Accession number:
188571
Collector/donor number:
14
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2a78-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705821

continuously variable inductor

Measurements:
overall: 5 1/4 in x 8 1/2 in x 14 1/2 in; 13.335 cm x 21.59 cm x 36.83 cm
Object Name:
Inductance, Variable
inductance
Other Terms:
Inductance, Variable; Components; Radio and Television; Radio and Television
Date made:
1917
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313572
Catalog number:
313572
Accession number:
188571
Collector/donor number:
R-2203
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a5-2a79-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705822

Wireless Telegraph Key

Associated institution:
Bureau of Standards  Search this
Physical Description:
brass (overall material)
rubber (overall material)
wood (overall material)
metal (overall material)
Measurements:
overall: 3 1/2 in x 3 in x 5 1/2 in; 8.89 cm x 7.62 cm x 13.97 cm
Object Name:
telegraph key
Other Terms:
telegraph key; Radio
Credit Line:
from the United States Bureau of Standards, Dept. of Commerce
ID Number:
EM.313506
Catalog number:
313506
Accession number:
188571
Collector/donor number:
R-2230
See more items in:
Work and Industry: Electricity
Telegraph Keys
Communications
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ac-7bc5-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_705844
Online Media:

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