ABSTRACT OP TAPE MADE BY DOUGLAS PERHAM AND ERV RASMUSSEN
July } 1963 , at the New Almaden Museum, New Almaden
Tape 2, Side 2
Conclusion of article, "Telegraphy, Waves without Wires,”
written by H.P. Veider, read by Perham. Describes in
detail Poulsen equipment, San Francisco and San Bruno
Point stations. Largest antenna in the world.
Items 183-186. Kennedy receivers . Kennedy made fine ,
long wave receivers, 1920s in Los Altos. Dr. Leonard F.
Fuller financed the Colin B. Kennedy Co. Built audio
frequency amplifiers in 1921.
Item 187 . Kolster receiver, made for federal government
in Palo Alto (with P as suffix to serial number) and in
Salt Lake City.
Paper from archives on Poulsen Telegraph Co . Dated Jan 18,
1919. Capitalized at *>25,000,000. U.S. Navy bought Poulsen
stations and rights for $1,600,000, Stock disposal discussed.
Items in Federal case — miscellaneous . Receivers, speakers.
Item 158, Federal call box . Very rare. Federal placed
these beside Western Union call boxes in downtown area of
San Francisco, By twisting a key, a coded message was sent
and a Federal Telegraph boy would come to get your telegraph.
Item 194 . Infradyne receiver.
Item 206, GE battery charger .
Item 207. Wagner battery charger . Vibrating, mechanical type.
X— ray tube collection . Perham’ s first interest in 1898.
Imported from Germany, then made his own. One (in collection)
with wooden base, made by Thos. Edison in Harrison Lamp Works
in New Jersey. Perham installed this in doctor's office in
Palo Alto in 1902, first X-ray in the area.
Paul Seiler Electric Works . Pioneer electrical contractor on
lower Market Street, S • F « Repaired tubes} sold telegraph
instruments, batteries, manufactured telephones, galvanometers.
Young experimenters bought supplies from him. Perham worked
for him. Active in wireless in 1898, out of business by 1910.
University of California has some of his galvonometers . Some
of his phones in Perham' s phone collection.
Abstract, Tape 2, Side 2 — 2
Item 212. Pluoroscopes . About 1900. One used with Edison's
tube in doctor's office in Palo Alto. Discussion of source
of energy for this — static machines, very high voltage, could
throw a 24" spark.
Item 213. Coolidge transformer . Furnished light or heating
element of X-ray tube.
Item 214. Ritter Dental X-ray unit . Became obsolete in 1915,
as exceedingly dangerous. Discussion of dangers of early
machines, burns and injuries due to X-rays. Dr, Arthur
Erskine, first international president of the radiographers.
Work done for him by Perham.
RALPH M. HE1NTZ INTERVIEWED BY ERV RASMUSSEN
Introduction : Heintz an amateur radio operator since 1906.
Believed to be first man to receive a radio signal from an
airplane, 1910, at Tanforan race track. 1921, graduated from
Stanford, built radio equipment on commercial basis. Built
the 100 watt transmitter with which Clifford Dow made first
amateur contact between Hawaii and Mainland. Discussion of
"firsts" for Signal Corps, Merchant Marine, police cars,
submarines, airliners, Byrd expedition to Antarctic. Heintz
exhibit due to his generosity.
Interview: 1892 — born in St. Louis, Missouri. 1902 — moved
to ilorsetown, California. 1905 — moved to San Francisco.
1906— earthquake. Description of this. 1906 — moved to
Berkeley. Started wireless with his own spark coil, through
help of Arthur Heim of Alameda. Laird, Leonard Fuller also
early hams. Bay Counties Wireless, 1909-1912 — amateur wireless
club. Discussion of some early members. 1913 — graduated
from Lick High School. 1913- -UC at Berkeley. 1917 — in
Signal Corps, overseas, flying Hanley Paige bombers, at
night, working in lab in daytime, with British. Worked
with Robinson, inventor of cross loop direction f inding
system for aircraft. Worked at Farnborough.
1920 — graduated from Stanford in/chemistry . 1920 — Standard
Oil Company. 1921 — "Ralph M. Heintz, Scientific Instruments,"
at 606 Mission Street. Moorehead Laboratories at 638-640.
Mission Street. Also Atlantic and Pacific and the Colin B.
Kennedy Companies. De Forest was with the Atlantic and Pacific
Company, had an amateur radio telephone, an OT 10. Heintz
knew de Forest and Moorehead well, t
Abstract, Tape 2, Side 2 — 3
1922 — partnership formed with brother-in-law, Heintz and
, Kohlraoos, 606 Mission Street, Built one of first broad-
casting stations in Mexico, in Mazatlan. De. Forest built
one in Berkeley; K.RQW, KJBS discussed, -6'fcf.k. %w:» W** by.*
Wireless Specialty Apparatus Co. in Grant Building, at 5th
and Market Streets. Headed by Earl Ennis, later a radio
columnist for the Chronicle. Equipped a Wright airplane
with a transmitter in 1910 at Tanforan.
1907. Early wixeLess phones — McCariy ’s, American Wireless
Telephone Company, operated by Cohen and Dwyer. Description
of methods used.
Attempt to send voice transmission to an airplane flying.
Description of apparatus used. Madame Tetrazzini was asked
to sing into the horn. When she learned that a man in an
S’irpls^s was supposed to hear her, she refused to sing, saying
it must be witchcraft.
Discussion of McCarty’s spark gap system. Had a continuous
whine when he was not talking. May have been one of the
earliest in the U.S. Herrold came later. First really
successful C*v phone was the Foulsen arc brought in by Cy
1920--Heintz left 606 Mission. Bought out brother-in-law.
Took in Jack Kauffman. «*>
m / 7 i jl ?
1923-1928. Heintz at/0.9 Atoma Street, S.F. 1929 — built a
building in South S.*. Robert Dollar Steamship Company
bought control of Heintz company in 1929. Heintz made
transoceanic equipment for 168 ships. Communication division
ox Heintz and Kauffman later became Globe WiieLess, later
American Cable and Radio, Mackay Radio and finally part of
Patent on grid, so had to make a three element tube without
the grid: birth of the garamatron. Discussion of breaking
patent monopolies* Gamma plate* Built 1 kw transmitters*
On Europe trip Heintz found out about other three element
oscillators: Sinding-Larsen in Norway, Robert Goddard in
u.S* alia all had made the three— element tube ”work« H
RCA sued Heintz’ s company for patent infringement. After
Heintz ’s evidence, withdrew suit, licensed Dollar Co. on
same basis as GE and others, about 1934-35.
Abstract, Tape 2, Side 2 — 4
Story of Bill Eitel and Jack McCullough . Eitel, drove a
grocery wagon, was a radio ham in Los Gatos, came to work.
iieintz . McCullough came a bit later from a job selling
Stutz automobiles. The three of them started making tubes,
blew their own. 1934 — Eirnac founded, in an old store build-
ing. Heintz and Kauffman were first to use tantalum as a
plate material as a getter, since use of getters was
1937-1939. Heintz joined Bendix for project: use of poly-
phase high frequency power in aircraft. Heintz met Bill
Jack at Bendix. Formed a company, Jack and Heintz, in Palo
Alto at old hammer factory on Middlefield Road. Had diffi-
culty with labor racketeers. Moved the company to Cleveland.
Kaar Engineering now in the Jack and Heintz buildings.
J'iscussion present single side band communication systems.
Use of electrolytic detector in early days. Comparison with
Fleming valve and first de Forest tubes.
Item 1. II & K portable generator . Known as the "300," Part
of polyphase equipment developed for aircraft. Two separate
sets of windings, could be used single or polyphase. 300-
400 watts, 360 cycle. Similar generator used by explorers
John Henry Neer, Sir Hubert Williams at North Pole, Lincoln
This particular generator: Clyde de Vinna, chief cameraman
at Metro Goldwyn Mayer, a ham operator. Bought gas engine
generator, crystal controls transmitter, receiving equipment
from Heintz. Maintained communication with Hollywood while
filming "Trader Horn" in middle of Lake Victoria, Africa,
"in one hop."
Other early hams: Colonel Foster in Carmel; Cliff Dow in
Samoa; Lawrence Mart on Catalina Island. Equipment used.
Patent suit discussion: RCA impressed with tubes made by
Heintz which were duplicates of non-de Forest tubes of other
inventors. o4 years of monopoly— 17 years under Armstrong
patent, 17 years under tie Forest patent.
Farnsworth’s cold cathode tube, used as an oscillator.
Traffic between San Francisco and Manila. A key invention,
the basis of his electron multiplier.
End of Heintz Interview
Abstract, Tape 2, Side 2 — 5
j_tgm 241. 30 kw arc , Built at Federal Telegraph Co in
ralo Alto in 1930. Designed by Dr. Leonard Fuller. Ver-
tical arc, cast iron base. 600 volts do. Also build 1000
k rt arcs, driven at 600 volts. Used motor generator sets
iroifl street railway. 1930 — experiments with 1000 kw arcs
Chinese government ordered them, but could not pay. One
given to Stanford, where it was cut up and sold to -junk man
during war. Other given to U.C. at Berkeley. Perhara re-
wound the fiexds to Dr. Lawrence's specifications for the
xirsc cyclotron* Dr « Fuller made the arrangements*
item 242. federal antenna coupler .
Book type, used on a
Item 243. __De tuning inductance for tuning . Frequency shift
1 1 S3 21-i. b large insulators from Macka.y station .
Maekay phaseometer unit . Built by Dr. Fuller.
Nameplate says Newark, N.J.", but made in Palo Alto. Main
office was in New Jersey in 1930. 1932— Federal moved all
operations to N.J. fhis wa3 when the large arcs were given
away- -weighed 60 tons.
j.PBy 3, 1963. Continuation o f Erv Pasmussen and
Douglas Perham ~
Item 29 7 . General Radio condenser .
I^g_ 243. . GR inductor . General Radio one of early companies,
still in business. Pie wound coils; using wood as dielectric.
Gii variometer (item 265) one of their first pieces of ap-
paratus. Typed label.
Item 250. 1000 cycle oscillator . By Oft .
Hgii-.. -25 2 . GK wave me ter . First wavemeter within the ama-
teur's means. Gil also made crystal exciter units.
Item 25 6. 28 miscellaneous audio transformers . 1921 — everyone
building his own. E.8. Pridham designed an rf transformer
with an iron core. Elwell criticized this; Pridham quit and
went into the Magnavox Co.
1921-22. Radio broadcasting became popular. Couldn't buy a
receiving set, but had to build your own or have someone build
it for you. People stayed up most of the night, thrilled to
hear WEAP in New York. 1925-27. Built 10 and 12 tube super-
heterodynes. Later 9 Atwater Kent and Paul Crosley, who
Abstract, Tape 2, Side 2 — 6
started by making parts, began building full receiving sets.
Item 258. Crosley 62 receiver .
j..65a. General hadio large transmitting insulators . Used by
Federal Telegraph Co. to support inductances and as lead in
insulators, at Palo Alto station.
Item 269. 9 photos and documents . Dr. Fuller, Federal
END OP TAPE 2, SIDE 2