TAPE 1, SIDE 1
Made by Douglas Perham and Erv Rasmussen at the New
Almaden Museum, New Almauen, California, June, 1963
Early wireless in the U.S.
Life story of Douglas Perham.
Cy Elwell and Federal Telegraph Co.
1912 — De Forest's discovery in Palo Alto.
Discussion of early tubes.
Marconi case of the Perham collection: items 1
Marconi case: items 37 to 69.
Letters from archives of Marconi Co.
Story of Alahlon Loomis who sent wireless signals in
Story of Dr. Charles Herrold told in detail by Perham
Letters re herrold equipment and long distance wire-
less telephone events. Also news clippings.
Interview with Terry Hansen, early student of Herrold
ABSTRACT OF TAPE MADE BY DOUGLAS PERM AM AND ERV RASMUSSEN
June, 1963 * at the New Almaden Museum, New Almaden
Tape 1 , Side 1
I Early wirelessMu t.hp TT*£* 1898 , troop transport
corning from Phillipines sent message to station
in the Cliff House, San Francisco* 1901 , series
of stations in Hawaiian Islands* 1901 , Marconi’s
first U*S* station, Nantucket Island* 1905, Mar-
coni station on Mt * Tamalpais*
43 Life story of Douglas Perham * Born in Duarte, Calif*
in 1885 . Father a teacher and headmaster* High
school in Stockton* 1893 , World’s Fair in Chicago*
Visited George V/estingh^use and Nikola Tesla*
Westinghouse started his collecting career with a
lamp and socket* 1898 , Perham in Palo Alto* Im-
porting X-ray tubes from Germany* Crookes tube
in collection built at Harrison Lamp Works, New
Jersey for Thomas Edison* 1902, installed first
X-ray on Pacific Coast in doctor’s office in Palo
Alto* Bought Cashel’s Plumbing Company buildings
at 913 Emerson Street* He and Joe Baker had spar'k
sets — early hams* 1913 got his commercial license*
1 8 5 St o ry of Cy Elwell and Federal Telegraph Co • El we 1 1
be^g^rW^erested in radio telephony after checking
a /radio telephone system for Fenshaw Brothers, Oakland
lawyers, about 1905* 1903, Valdemar Poulsen arc
system* Elwell bought patent rights for U*B, use*
David Starr Jordan subscribed $500 for project*
1909, Poulsen Wireless Telephone and Telegraph Co*,
first communications company in America to use wire-
less as a medium* Out of this came Wireless Devel-
opment Co*, Federal Telegraph Co*, Mackay Radio, IT&T*
Doug Perham first employee*
1912--De Forest’s discovery * Van Etten, Logwood
and de Forest, at 913 Emerson, discovered audion
tube would oscillate, could be used as a generator
of high frequency current* Description of circum-
Early tubes * Discussion of tubes by de Forest,
Perham, Hyde, Moorehead, Cunningham, McCandless*
De Forest’s first triode was tubular — in the Per-
Abstract, Tape 1 , Side 1--2*
324 Item 1« Marconi loose coupler * Used to receive
signals from the PouLs an station*
Item 2 » Electrose insulator. Famous, widely used.
1909 used by Dr. Herrold's station.
Item 5 . Leyden .jars . Crude but efficient condensers
from Marconi station* Moskicki condensers an improve-
Item 4. Stanley AC ammeter . Stanley Kelly Co •
produced first polyphase motor after Tesla developed
Items 6 , 7 . Thordarson transformers ■ About I 9 J 5 .
Started with apparatus for doctors, therapeutic
macnines * Still in business*
Item 9 . 5 Murdock condenser sections. Murdock
in Portland only source for amateurs* Prior to this
had to make their own with glass plates, tin foil.
Item 10 . Whitney Co. ammeter. Whitney one of early
companies making ammeters.
Item 11. Transmitting vario coupler. Unknown origin.
Item 12* Marble base changeover switch. No comment*
Item 15 . Baldwin headphones. Baldwin & Kolster
combined to form Kolster — Baldxvin Co* Rolste^r! made
radios in old green building. University and County Road,
Item 16 ♦ Two mirror galvanometers. Made by Lord
Kelvin in England* Used in early cable receivers-
I^em 20 . Mercury interrupter. Made in England
by Max Levy (?) prior to Oct 12, 1899- Used in
place of electrolytic interrupter — thicker spark.
A complete description of this (by manufacturer?)
is read by Perham-
1 1 e in 21. Roller S m ith voltmeter. First meter man-
ufacturer to bring down prices within amateur's
Item 22. Magnetic detector. Found by E. S* Pridham
who founded Magnavox. Pridham worked with Peter
Abstract, Tape 1, Side I --3
MARCONI CASE (cont'd)
Jensen in Perham’s laboratory in Palo Alto* This
detector is very early, handmade •
Item 2k* Marconi relay* From an elaborate Mar-
coni receiver* First polarized relays to be built
with great sensitivity. Used in Western Union and
also wireless work*
Item 26 * Western Electric tangent galvanometer .
Built in great quantity by Western Electric Tor
Western Union* Used extensively by all communica-
Item 26 . Decade box* Made by Queen 8c Co* > London*
560 Item 29* Edeirnan galvanometer* No comment.
Item 30 * Spark coils* Originally designed Tor
ignition systems on early single cylinder engines*
Taken over by amateurs as source of spark power*
McCarty, Herr old started out with spark coils*
Item 52* Marble base key by Picard Co* which later
became Wireless Apparatus Co*
Item 33* Two magnetic relay keys* Description
of Lafayette Station*
I tem 36 * Frahm frequency meter* Ge r m an* P e r h am
used one in ac lighting plant* Uses vibrating reed*
Abstract, Tape 1, Side 1 — 4
ABSTRACT OF TAPE MADE BY DOUGLAS PERHAM AND ERV RASMUSSEN
June, 1963 , at the New Almaden Museum, New Almaden
Tape 1, Side 1 (cont'd)
609 Item 37 . Marconi speaker. 40~50 years old. Ampli-
fied dot and dash signals*
Item 39 • Chaffee quenched gap. Made by Telef unken.
Item 4l» Leeds Northrup instruments. First American
supplier of good devices.
Item 42. Russian condensers . From the Marconi Co.
Item 43 ♦ 366 Murdock condenser. Every ham had one •
665 Item 45 • Miscellaneous carborundum detectors *
Greenleaf W« Pickard was prolific producer, patents
on many combinat ions •
Item 46. El Company potentiometer. Shown in catalog
of 1910. Hugo Gernsback, founder of El Co, Electro-
Importing Co. Also magazines: Electric ? Writer
Modern Electrics, Radio News, Electrical Experimenter.
IlO Item 53- Electrolytic detectors. Discussion of
component parts, manufacture.
Item Miscellaneous crystal holders •
Item 55» Uncle A1 1 s miracle receiver . Still in
business in Oakland.
Item 59* Slaby-Arco coherer . Invented by German,
Braun, adapted by Slaby— Arco . Used extensively by
Marconi. Description of action.
Ite m 60 . Steinite interfere n ce eliminator . 1920 .
Item o l . Variable Marconi condenser* In brass housing.
769 Item 62 . Roister waverneters * History of Roister Co.
Roister radio compass manufactured by Federal Tele-
graph Co* Dr* Roister first to build a parabolic
reflector* First one here to experiment with short
Item 69 . One IP receiv er and two SE 1^3 receivers-
Abstract) Tape 1> Side 1--5 •
821 Item 69 (cont'd)
Built in World War I by many manufacturers for the
Bureau of Steam Engineering- Designed by Pickard-
852 Letters between Marconi Co- and National Wireless. C o -
From archives of New Almaden Museum-
893 Story of Dr« Mahlon Loomis - From Perham archives-
News story from New York Evening Mail- Mahlon Loomis
a dentist who transmitted signals without wires in
early i 860 ' s •
Story of Dr- Charles Herrold - Told in detail by Perham-
1857-19^8 - San Jose High School) Stanford- 1909) radio
school in San Jose- 1909) first broadcasting station--
and long distance radio telephone events-
Letters re Herrold equipment >/ National Wireless Tele-
phone and Telegraph Co- > Marconi Co- All from Perham
archives- Also newspaper clippings- 1913-1915*
446- Interview with Mr- Terry Hansen - Early student of
575 Herrold. Ham 5 navy; commercial license in 1912-
(Interview continued on side 2 * )
END OF TAPE 1, SIDE 1
Tape 1, Side 1, item 3 in Marconi case: Perham gives
the spelling as Moscicki; other sources give Moskicki.
Tape 1, Side 1, indicator 40 , states de Forest stayed
in Palo Alto until 1915* His autobiography and letters
state he left in May > 1913*