RCA
(Radio Corporation of America)
US Navy "Deck Talkers"
Headset MI-2454-B (newer model)
MI-2045-E on far right photo only (older "Big Can" model)
 
 

RCA
(Radio Corporation of America)
Hand Set
Handset MI-2040-A
SPEC. R17T23

Stromberg Carlson
US Navy "Deck Talkers"
Type H200/U  # 702019-375  (left and center photos)
Older style on right
 
 

Stromberg Carlson Handset
Type A500, H203/U

U S Instrument (USI)
US Navy "Deck Talkers"
 
 

U S Instrument (USI) Handset
A560 (with push button), A577 (without push button)

TA-1
Various makers
Landers Fray& Clark, Crown Controls Corp., Yankee Telecom Labs inc.,
Lionel (yes the model train company), and many others

Dynalec Corporation
Headset same as Stromberg Carlson (except markings)

No Photos Yet

ISC Telephonics

The Wheeler Insulated Wire Company Inc.

Western Electric Company Headset
(Two left photos)  D173465 (on Mic), D173463 (on earphone pads), D173314 (on earphone)
(Third photo from left)  D173312, Type O, U S Navy "Deck Talker" type
(Far right photo)    U S Navy "Deck Talker" type, D173014 (on ear pieces), D173017 (on headband)
 

Western Electric Company Handset
On left  D173009, Type L, SGS (65)26d
On right M1 handset from submarine

Automatic Electric Company Headset
U S Navy "Deck Talker" type R17T23 (int)
 
 

Automatic Electric Company Handset
 

TMC
This company is form England.
England and Australia used balanced armature or sound powered units on ships also.
Two distint models (looks are the same) AP12501 (Australia), AP12591(England)
Both of these models may have been used in both England and Australia

David Clark Company Inc.
Model H5090, For full listing of models Click Here
For parts list Click Here
Elements for above headset run about $85.90 each new (elements only)

Sound Powered Communications Corporation
Left and center are model SPT-500 SP  on far right model SPT-125 S
They also sell a headset which is made by David Clark

Inside a Sound Powered Element
Drawings and photos of the "insides" of elements!!
Click Here

Comparison
of sound powered units
Click Here

Matching
sound powered headsets to crystal sets using transformers
Click Here

Histories
of the companies who made (or make) sound powered units
Click Here

"Deck Talkers"
Time Magazine ad August 7, 1944  page 14
finder Owen Pool

Links
to web site that sell sound powered items
Click Here

Other Crystal Radio Information Pages

Coil Calculator

Resistor color code reader

Crystal Detectors and  Stands

Build a reproduction detector stand

Additional Information On Sound Powered Units
"Links"

SkyWaves
by Al Klase
(go to "crystal sets" then "Sound-Powered Telephone Spotter's Guide ")

or

Headwize
by Alan Klase
 

Ben Tongue's web page
For more information on how to match sound powereds to a transformer.
Also check out his "Home" page (link at bottom of page)

Crystal Radio Resources
One of the "best" web sites for crystal radios!
 

Scott's Crystal Radios
For  headphones (vintage -- some for sale) this is the place to go!
 

Xtal Set Society
National Crystal Radio Club. Lots of info and supplies.
 

The Crystal Set Radio Club
Try it, you'll like it. Lots of help!!!
 

Rap 'n Tap
Part of "The Xtal Set Society. More help!!
 

More coming soon -- If you would like your site listed, please email me!
 

Any contributions (Photo's or commentary) can be sent to "Removed"

I am always looking for "different" sound powered devices to buy and add to the page.
 
 

This photo has nothing to do with SP units, but it is
the first crystal set I ever owned on my own, and
I like to see it every once in a while!!!
(about 1963)
 
 

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