bigram

This is a table of type bigram and their frequencies. Use it to search & browse the list to learn more about your study carrel.

bigram	frequency
new york	219
central office	192
western electric	179
secret service	173
cord circuit	150
united states	130
multiple switchboard	100
induction coil	94
electric company	93
western union	90
line circuit	86
private branch	84
side switch	79
voice currents	77
hook switch	72
telephone system	72
line switch	71
calling plug	69
calling subscriber	68
one hundred	66
normal position	65
party line	64
ringing current	63
telephone service	61
ssc mac	61
called subscriber	61
talking circuit	61
ringing key	59
first selector	59
telephone company	57
telephone business	57
law enforcement	57
repeating coil	55
multiple jacks	54
supervisory relay	54
telephone set	54
electromotive force	54
per second	53
telephone line	53
one side	53
supervisory lamp	51
current will	50
storage battery	49
metallic circuit	49
one end	49
per cent	49
bridged across	46
second selector	46
listening key	46
steve jackson	45
pine lea	45
soft iron	45
line relay	45
impedance coil	44
task force	44
wireless telegraphy	44
electrical engineers	43
digital underground	43
impedance coils	42
calling line	42
san francisco	42
alternating currents	42
magnetic circuit	42
knight lightning	41
hacker crackdown	41
automatic system	41
thousand dollars	41
pole pieces	41
electrical engineering	40
alexander graham	40
direct current	40
called line	39
line lamp	39
graham bell	39
electric current	39
permanent magnet	38
ten thousand	38
even though	38
one another	38
multiple board	38
battery supply	37
alternating current	37
york city	37
party lines	37
fry guy	37
local circuit	37
telegraph company	36
local battery	36
bell company	36
telephone exchange	36
answering jacks	35
large number	35
ringing keys	35
trunk lines	35
million dollars	34
gail thackeray	34
cord circuits	33
bell system	33
five hundred	33
answering plug	33
phone system	33
wireless telephone	33
telephone lines	33
binding posts	32
human voice	32
desk stand	32
copper wire	32
multiple switchboards	32
release magnet	32
will cause	31
main office	31
one direction	31
american institute	31
science fiction	30
answering jack	30
battery systems	30
distributing frame	30
sound waves	29
ted turner	29
magnetizing force	29
intermediate distributing	29
battery system	28
two wires	28
american telephone	28
line signals	28
magneto switchboard	28
telephone receiver	28
young man	28
signal transmitter	28
telco security	28
first time	28
joint author	28
private magnet	28
direct currents	28
talking apparatus	28
computer crime	27
two hundred	27
telephone circuit	27
wall set	27
opposite direction	27
automatic systems	27
common battery	27
line will	27
ringing currents	26
two limbs	26
third position	26
many years	26
master bar	26
magneto multiple	26
clarence fernald	26
five thousand	26
first telephone	26
automatic electric	26
telephone sets	26
bulletin board	26
atlanta three	26
polarized ringer	25
great deal	25
rotary switch	25
will flow	25
telephone companies	25
live side	25
bell companies	25
kellogg company	25
two thousand	25
current supply	24
hundred thousand	24
branch exchange	24
telephone systems	24
manual switchboards	24
circuit may	24
polarized bell	24
sulphuric acid	24
office apparatus	24
phone phreaks	23
multiple jack	23
line relays	23
two lines	23
single line	23
two years	23
single silk	23
two general	23
calling supervisory	23
relay will	22
intercommunicating system	22
electronic frontier	22
first place	22
operating companies	22
private exchange	22
test thimble	22
rear electrode	22
listening keys	22
line systems	22
line signal	22
operator may	21
distance lines	21
line switches	21
high impedance	21
service agents	21
take place	21
switch hook	21
chicago task	21
magneto generator	21
telephone apparatus	21
line wire	21
high resistance	21
dean electric	21
jackson games	21
will give	21
secondary winding	21
magneto telephone	21
wire system	21
computer fraud	21
armature winding	20
gap arrester	20
line may	20
thousand miles	20
widely used	20
thirty years	20
various parts	20
current flowing	20
seconds average	20
repeating coils	20
musical telegraph	20
rotary side	20
years ago	20
retardation coil	20
magneto telephones	20
every one	20
hook lever	20
line wires	20
busy test	19
supervisory signals	19
three hundred	19
magneto switchboards	19
telephone circuits	19
front electrode	19
tip spring	19
manufacturing company	19
kellogg switchboard	19
lamp will	19
station equipment	19
grateful dead	19
back release	19
largely used	19
bridge cut	19
vertical relay	19
permanent magnets	19
credit card	19
second position	19
good deal	18
supply relay	18
civil libertarians	18
hundred miles	18
specific inductive	18
bell telephone	18
winding space	18
key shelf	18
office equipment	18
battery multiple	18
wireless telegraph	18
will take	18
intermediate frame	18
idle trunk	18
atlantic cable	17
will pass	17
conventional symbols	17
bulletin boards	17
supply company	17
central offices	17
reed tongue	17
battery telephone	17
normal condition	17
already described	17
phoenix project	17
simple magneto	17
telegraph line	17
almost every	17
line circuits	17
greater number	17
phiber optik	17
two windings	17
rocker arm	17
post office	17
computer intrusion	17
long enough	17
vibrations per	17
circuit line	17
specific gravity	17
telephone men	17
four times	17
new england	17
trunk circuit	17
much less	17
internal resistance	17
selector trunk	17
insulating material	16
bank contacts	16
binding post	16
grandfather fernald	16
hard rubber	16
receiving station	16
will always	16
granular carbon	16
hundred lines	16
tip strand	16
power plants	16
test rings	16
connective division	16
review questions	16
tip side	16
different kinds	16
busy line	16
individual periods	16
three years	16
open wires	16
working parts	16
morse code	16
line ringing	16
lightning discharges	16
one day	16
battery current	16
power plant	16
normally open	16
signaling apparatus	16
steady current	16
test thimbles	16
incoming trunk	16
wires leading	16
just described	16
porous cup	16
branch exchanges	16
double silk	16
one terminal	16
natural rate	15
inductive capacity	15
crank shaft	15
phantom circuit	15
double cotton	15
telephone art	15
automatic telephone	15
electric railways	15
computer systems	15
contact springs	15
sleeve contact	15
electric telegraph	15
much larger	15
young men	15
carrying capacity	15
second selectors	15
busy hour	15
will also	15
single wire	15
iron wire	15
hand corner	15
distance service	15
visible speech	15
consulting engineer	15
automatic apparatus	15
multiple boards	15
office battery	15
connected lines	15
relay armature	15
one station	15
single cotton	15
human beings	15
american school	15
current flows	15
computer security	15
operation sundevil	15
trunk line	15
years later	15
telegraph wires	14
test circuit	14
two men	14
whole earth	14
battery switchboard	14
lamp signal	14
three thousand	14
line system	14
either one	14
let us	14
telephone equipment	14
induction coils	14
much greater	14
automanual system	14
good idea	14
magneto generators	14
many times	14
will result	14
bell circuit	14
selecting switches	14
will receive	14
distributing frames	14
vertical side	14
magnetic lines	14
electric waves	14
circuit arrangement	14
two sides	14
outgoing trunk	14
office building	14
simple switchboard	14
submarine cable	14
electrode chamber	14
ultimate capacity	14
general public	14
business world	14
private wiper	14
electrostatic capacity	14
insulation resistance	14
abuse task	13
switch unit	13
will operate	13
train wire	13
selective ringing	13
turns per	13
system may	13
receiving apparatus	13
electronic community	13
arrangement shown	13
exchange operator	13
several years	13
carlton fitzpatrick	13
takes place	13
two stations	13
great many	13
battery telephones	13
next morning	13
professor thomson	13
dry cell	13
frontier foundation	13
ohms per	13
ten years	13
one office	13
calling battery	13
circuit will	13
professor bell	13
transfer system	13
primary winding	13
lawrence fernald	13
steady currents	13
phantom circuits	13
magnet wire	13
will show	13
lord kelvin	13
copper plate	13
monarch telephone	13
selective party	13
relay rack	13
current receiver	13
tapper rod	13
carbon block	13
dorothy denning	13
four hundred	13
switching stations	13
inductive resistance	13
practical use	13
two conductors	13
switch lever	13
corporate security	13
thousand people	13
telephone manufacturing	13
floor plan	13
theodore vail	13
much better	13
mica washer	13
transmitter controller	13
key set	13
speaking telephone	13
sleeve contacts	13
rotary relay	13
underground board	12
local batteries	12
low resistance	12
fifty thousand	12
strong enough	12
mac will	12
two plates	12
elder man	12
board systems	12
musical instruments	12
one operator	12
composite circuits	12
hundred feet	12
way trunks	12
opposite directions	12
current may	12
contact bank	12
five minutes	12
selecting impulses	12
commonly employed	12
connected together	12
underground boards	12
six thousand	12
iron core	12
talking current	12
phone companies	12
ground connection	12
railway composite	12
telephony pages	12
shortest individual	12
two subscribers	12
zinc sulphate	12
chemical action	12
return path	12
carbon transmitter	12
one time	12
alfred vail	12
thousand telephones	12
ordinary polarized	12
microfarad condenser	12
every day	12
found busy	12
four years	12
longest individual	12
clearly indicated	12
like manner	12
telephone exchanges	12
magnet armature	12
many people	12
wall telephone	12
sam yoder	12
pilot lamp	12
anything else	12
rotary magnet	12
bell box	12
common source	12
something like	12
inch single	12
proper number	12
great eastern	12
early days	12
total number	12
one wire	12
relay winding	12
local lines	11
make sure	11
simple switchboards	11
zon twenty	11
harmonic ringing	11
chicago computer	11
magnet will	11
sleeve strand	11
electric system	11
trunk plug	11
large exchanges	11
ma bell	11
states secret	11
computer games	11
push button	11
operator will	11
insulated wire	11
old man	11
telephone wires	11
desired station	11
technical power	11
sound vibrations	11
relay windings	11
manual systems	11
twenty years	11
magnetic field	11
idle line	11
electronic mail	11
home telephone	11
terminal room	11
office connection	11
look like	11
must pass	11
one man	11
train dispatching	11
hand portion	11
without wires	11
per square	11
lines may	11
first selectors	11
public service	11
hand side	11
ringing generator	11
battery switchboards	11
phone company	11
two ends	11
general type	11
positively charged	11
hundred dollars	11
rear view	11
will find	11
board system	11
supplying current	11
called station	11
large current	11
charles wheatstone	11
human ear	11
every telephone	11
trip magnet	11
far enough	11
rural districts	11
storage batteries	11
mitch kapor	11
substation arrangement	11
william thomson	11
upper portion	11
still another	11
inches long	11
switch arm	11
german silver	11
harmonic telegraph	11
computer networks	11
telephone work	11
large enough	11
manual system	11
screw thread	11
electrical hazards	11
circuit containing	11
grounded line	11
hand end	11
sectional apparatus	11
line lamps	11
battery circuit	11
current impulses	11
joseph henry	10
one way	10
richard andrews	10
transfer switchboard	10
resistance winding	10
spoken word	10
sal ammoniac	10
gill selector	10
office exchange	10
access device	10
station apparatus	10
master switch	10
long distance	10
transmitter current	10
zinc plate	10
exchange district	10
state police	10
bell operating	10
wide use	10
one thing	10
distance telephone	10
good practice	10
every single	10
order wire	10
fifty miles	10
dilute sulphuric	10
miles away	10
ringing relay	10
proper position	10
carbon blocks	10
talking circuits	10
wall street	10
many others	10
real world	10
heat coil	10
protective devices	10
office system	10
important feature	10
circuit shown	10
connected across	10
inch centers	10
carbon arrester	10
new jersey	10
entirely new	10
receiver circuit	10
calling station	10
trunk contacts	10
five years	10
upper end	10
manual switchboard	10
square inch	10
wireless telephony	10
currents will	10
vertical magnet	10
telephone currents	10
desk set	10
switchboard cabinet	10
messages per	10
york telephone	10
present time	10
armature will	10
trunk repeater	10
two springs	10
six inches	10
selecting switch	10
initial charge	10
hand battery	10
general form	10
call bell	10
switching systems	10
might well	10
attorney general	10
one thousand	10
two telephones	10
feet long	10
simple common	10
temperature coefficient	10
years old	10
permanently connected	10
wire leading	10
selective signaling	10
individual line	10
subscriber responds	10
bell labs	10
pole piece	10
original inventor	10
craig neidorf	10
fluctuating currents	10
local service	10
well enough	10
copper sulphate	10
patent office	10
several times	10
will respond	10
musical sound	10
line called	10
new idea	10
battery wall	10
many telephones	10
one may	10
one place	10
make sketch	10
make diagram	10
voltaic cell	10
division starter	10
laurie fernald	10
sectional switchboard	10
civil liberties	10
transfer line	10
closer together	10
seven hundred	10
per mile	10
another way	10
telephone man	10
kellogg two	10
negatively charged	9
telephone transmitters	9
automatic switching	9
pole changers	9
bar magnet	9
battery feed	9
power board	9
supervisory signal	9
lower portion	9
line drops	9
may come	9
iron wires	9
trunk circuits	9
many lines	9
ground return	9
telephone engineering	9
major account	9
magneto bell	9
lamp signals	9
commonly used	9
special services	9
talking purposes	9
per trunk	9
electric wire	9
current passing	9
much money	9
one might	9
three times	9
circuit lines	9
permanently associated	9
two line	9
force will	9
first position	9
extreme left	9
wire will	9
five million	9
readily understood	9
current arrester	9
much longer	9
telephone instruments	9
bell patents	9
office operator	9
many cases	9
card numbers	9
fairly well	9
message rate	9
electric telephone	9
ten days	9
double dog	9
tip conductor	9
normally closed	9
disconnect lamp	9
three operators	9
dotted lines	9
union telegraph	9
thousand lines	9
calls per	9
rear end	9
far away	9
make clear	9
pled guilty	9
two miles	9
magneto desk	9
distant station	9
second office	9
selector switch	9
busy signal	9
go back	9
seat switch	9
trunk jacks	9
martin luther	9
federal computer	9
line conductors	9
receiving end	9
release relay	9
sleeve conductor	9
lines will	9
city exchange	9
two strands	9
went back	9
somebody else	9
coil method	9
copper miles	9
cycles per	9
switchboard equipment	9
current must	9
sir charles	9
great number	9
will enable	9
telephone train	9
connected respectively	9
operator plugs	9
vibrating bell	9
hertzian waves	9
single office	9
will connect	9
automatic restoration	9
federal law	9
local action	9
sir william	9
made possible	9
columbia university	9
stolen property	9
electromotive forces	9
current arresters	9
may now	9
will make	9
cubic inch	9
battery work	9
per cubic	9
back contact	9
gap arresters	9
commonly called	9
telephone booth	9
desk telephone	9
benjamin franklin	9
current generator	9
luther king	9
lamp circuit	9
electrical engineer	9
temperature coefficients	9
almost entirely	9
inductive action	9
one limb	9
within sight	9
visible signals	9
generator crank	9
computer network	9
ground spring	9
magneto system	9
telephone switchboard	8
come back	8
may well	8
one will	8
series magneto	8
main frame	8
every point	8
every part	8
position corresponding	8
lod members	8
federal interest	8
next day	8
phone service	8
north pole	8
distance switching	8
american society	8
comparatively small	8
electric light	8
inches high	8
telco people	8
register controller	8
one shown	8
distance apart	8
high speed	8
receive current	8
perry barlow	8
old gentleman	8
ringing lamp	8
many different	8
may make	8
tim foley	8
well known	8
right angles	8
sending station	8
originating calls	8
selective impulses	8
bantam books	8
line terminates	8
small exchanges	8
common practice	8
incandescent lamp	8
john perry	8
lines terminate	8
magneto systems	8
may seem	8
computer professionals	8
grounded lines	8
many messages	8
five dollars	8
ever since	8
king day	8
cylinder switch	8
go ahead	8
line leading	8
two batteries	8
pilot relay	8
idle one	8
miles apart	8
experimental line	8
private bank	8
reverse direction	8
monarch company	8
sneak currents	8
make money	8
impulses sent	8
will refer	8
main distributing	8
magneto type	8
switchboard assembly	8
lines leading	8
phone numbers	8
elisha gray	8
restoring coil	8
position shown	8
shown connected	8
current passes	8
universal service	8
fine wire	8
ordinary magneto	8
electrical impulses	8
telephone office	8
signal code	8
carbon arresters	8
certain number	8
current flow	8
exchange may	8
alarm circuit	8
ground potential	8
arc rectifier	8
ohmic resistance	8
simplified form	8
grounded circuits	8
harmonic system	8
telephone transmitter	8
six hundred	8
large cities	8
chelsea office	8
atlanta lod	8
selector shaft	8
electromagnetic induction	8
may readily	8
ended trunk	8
subscribers whose	8
telephone engineer	8
thomas watson	8
biased bells	8
proper frequency	8
receiving device	8
will probably	8
will get	8
distant office	8
taran king	8
multiple common	8
first movement	8
miles long	8
wire may	8
great variety	8
two relays	8
lamp jacks	8
considerable distance	8
one else	8
individual period	8
telephone practice	8
just like	8
will allow	8
pounds per	8
generator armature	8
taking place	8
general methods	8
hand key	8
nearly always	8
clearly shown	8
make one	8
insulated wires	8
pole changer	8
sound will	8
will tend	8
wire circuits	8
telegraph sounder	8
automatic offices	8
distance line	8
impulses will	8
switch contacts	8
computer science	8
come true	8
team work	8
raised position	8
patent experts	8
differential electromagnet	8
charging current	8
six years	8
two weeks	8
primary circuit	8
will still	8
four different	8
point foundation	8
third strand	8
source code	8
space utilization	8
primary cells	8
will move	8
switching station	8
chicago american	8
lower end	8
tune system	8
general features	8
flexible cord	8
battery type	8
heat generated	8
stolen codes	8
sending apparatus	8
telegraph lines	8
night alarm	8
small number	8
cigar store	8
type shown	8
whole thing	8
answering cord	8
one group	8
toll lines	8
sheet metal	7
three million	7
hundred years	7
least one	7
exchange switchboard	7
relative position	7
current sent	7
another type	7
combined drops	7
one telephone	7
first cost	7
supervisory relays	7
neidorf case	7
electronic communications	7
short time	7
magnet structure	7
primary connector	7
two days	7
common wire	7
damping springs	7
will permit	7
lower left	7
component parts	7
much higher	7
federal government	7
pilot cell	7
will carry	7
whose lines	7
incandescent lamps	7
general manager	7
forty years	7
four hours	7
subscriber removes	7
two contacts	7
larger number	7
currents flowing	7
impulse wheel	7
vocal cords	7
wire line	7
wall type	7
best understood	7
computer underground	7
battery may	7
various forms	7
square miles	7
first thing	7
fuller cell	7
telephone network	7
line method	7
large offices	7
search warrant	7
electric co	7
receiving instrument	7
six months	7
bus bars	7
telephone cables	7
operating room	7
dean company	7
electricity will	7
one section	7
third thousand	7
two inches	7
short rings	7
professor henry	7
came forward	7
without permission	7
average length	7
conducting path	7
considerable distances	7
will readily	7
previously described	7
million telephones	7
general use	7
magnetic flux	7
telephone engineers	7
one winding	7
unix software	7
phone calls	7
jumper wires	7
two boys	7
branch board	7
york state	7
complete circuit	7
two groups	7
first million	7
white transmitter	7
usually mounted	7
three different	7
telephone current	7
branch subscriber	7
commercial use	7
telephonic system	7
single battery	7
hand dial	7
bell organization	7
switchboard sections	7
relay coil	7
control center	7
first office	7
illicitly copied	7
automatic equipment	7
interesting feature	7
private wire	7
high potentials	7
talking set	7
carbon electrode	7
grand telephonic	7
first idle	7
particular party	7
electrical power	7
cyberpunk science	7
quite willing	7
call circuit	7
everybody else	7
psap equipment	7
electric lights	7
electric currents	7
two connected	7
force set	7
combined drop	7
will ever	7
computer people	7
positive pole	7
foreign countries	7
computer intruder	7
two long	7
battery connection	7
lightning discharge	7
pulsating current	7
electric selector	7
alarm circuits	7
chief engineer	7
starting key	7
great advantage	7
feet per	7
modern telephone	7
state lines	7
close together	7
moving parts	7
end office	7
almost universally	7
double clearing	7
two operators	7
grounded circuit	7
various bell	7
bridging line	7
important part	7
will become	7
two kinds	7
private conference	7
good many	7
great britain	7
great enough	7
supervisory lamps	7
internal screw	7
key springs	7
short long	7
charles williams	7
first amendment	7
neidorf trial	7
one city	7
every line	7
account centers	7
connect two	7
simplest form	7
horseshoe form	7
retardation coils	7
vertical impulses	7
visual signals	7
portable telephone	7
deep notch	7
nineteenth century	7
will never	7
tens digit	7
center portion	7
rotary impulse	7
resistance devices	7
physical circuit	7
haired man	7
set illustration	7
shunt around	7
several months	7
physical circuits	7
secondary coil	7
just stated	7
baby bells	7
number calls	7
floppy disks	7
electric circuit	7
computer bulletin	7
southern bell	7
battery desk	7
atlantic ocean	7
black eyes	7
first one	7
common use	7
coin collectors	7
silver wire	7
one complete	7
given magnetizing	7
bruce sterling	7
telephone expert	7
one particular	7
supply current	7
commercial success	7
probably never	7
will depend	7
board called	7
one million	7
contact spring	7
distant point	7
decimal indicator	7
twenty thousand	7
nothing else	7
large corporations	7
personal computer	7
contact points	7
connecting two	7
mechanical motion	7
lorimer automatic	7
primary batteries	7
two million	7
impulses corresponding	7
secondary windings	7
opposite side	7
line protection	7
roberts system	7
air gap	7
switching apparatus	7
harmonic party	7
telephone cable	6
subscriber may	6
michigan bell	6
chapter viii	6
per linear	6
boston university	6
one person	6
pirate board	6
two different	6
million miles	6
without regard	6
young professor	6
electrical expert	6
switchboard cords	6
toll connections	6
per hour	6
lex luthor	6
voltage battery	6
chapter iii	6
means must	6
electronic crime	6
intermediate frames	6
racketeering unit	6
per se	6
usual manner	6
stand hook	6
two instruments	6
switchboard plugs	6
long since	6
telephonic communication	6
wire fraud	6
two parts	6
general classes	6
public interest	6
last night	6
sleeve side	6
computer intrusions	6
visual signal	6
long ago	6
large currents	6
distance traffic	6
nitric acid	6
moving pawl	6
strowger system	6
access codes	6
credit cards	6
break contacts	6
low reluctance	6
upright type	6
entire working	6
exchange trunk	6
hard disk	6
automatic switches	6
return movement	6
looks like	6
human speech	6
four thousand	6
small amount	6
national security	6
cotton braid	6
business men	6
civil libertarian	6
relay pulls	6
one knows	6
may flow	6
western society	6
connector side	6
carrying messages	6
obvious manner	6
bridge path	6
new haven	6
drawn copper	6
two adjacent	6
mechanical signal	6
station protectors	6
eleven years	6
white house	6
press release	6
high school	6
needle telegraph	6
commonly termed	6
ringing machines	6
back transmitter	6
line equipment	6
phone phreak	6
holding magnet	6
main battery	6
magneto set	6
circuit connections	6
associate member	6
manually operated	6
two offices	6
host computer	6
lower side	6
relay board	6
given time	6
force raids	6
right away	6
computer system	6
short line	6
major switches	6
mabel hubbard	6
telephone traffic	6
generator will	6
charging machines	6
one circuit	6
sending messages	6
bare wire	6
smaller number	6
trunk jack	6
one position	6
condenser will	6
subscriber will	6
test busy	6
north carolina	6
switch wiper	6
dispatching circuit	6
average five	6
switching equipment	6
mechanical signals	6
current coils	6
good enough	6
track system	6
fiction writer	6
american public	6
pilot signals	6
intellectual property	6
automatic telephony	6
asked ted	6
may cause	6
electrical current	6
bank contact	6
long spring	6
operator answers	6
bell received	6
complete circuits	6
circuits shown	6
one line	6
pretty well	6
computer hackers	6
plug type	6
linear inch	6
bunker hill	6
ended transfer	6
will begin	6
may also	6
privacy act	6
jack illustration	6
day crash	6
commercial service	6
will send	6
desk telephones	6
telephonic apparatus	6
manual offices	6
great importance	6
permanently magnetized	6
different methods	6
control office	6
practical man	6
scientific toy	6
long line	6
months later	6
principle involved	6
signals may	6
various pieces	6
another form	6
jack strips	6
anarchy files	6
transfer lines	6
without interfering	6
one form	6
ringing circuit	6
subscriber hangs	6
must also	6
currents may	6
home key	6
telephone number	6
underground groups	6
relative positions	6
worse yet	6
came back	6
operator inserts	6
ringing cut	6
vibrating reed	6
upper left	6
head receiver	6
one step	6
pirate boards	6
extensive use	6
wrong direction	6
selector wheel	6
station will	6
two types	6
make contact	6
carried along	6
system will	6
entire length	6
abnormal currents	6
commercial types	6
two circuits	6
copper oxide	6
two pairs	6
single impulse	6
gravity cell	6
mmoc will	6
every sort	6
zero potential	6
thirty thousand	6
chief executive	6
wires underground	6
circuit leading	6
desired number	6
red end	6
shown later	6
coming now	6
modern practice	6
messages may	6
carbon granules	6
permanently bridged	6
bell people	6
fcic people	6
two parties	6
will form	6
ratchet wheel	6
much trouble	6
wire ballast	6
per day	6
carried away	6
secondary connector	6
coil illustration	6
monarch system	6
five line	6
telephone co	6
circuit closed	6
good service	6
yet another	6
one pole	6
signal systems	6
civil war	6
potential across	6
san diego	6
one knew	6
vertical position	6
original telephone	6
proper conditions	6
already discussed	6
get away	6
wire multiple	6
set forth	6
hundred million	6
telegraph wire	6
electrical energy	6
right now	6
service meter	6
desired party	6
engineers western	6
measured service	6
third side	6
recent years	6
battery bell	6
large part	6
simplex circuits	6
may take	6
also used	6
will bring	6
large manual	6
call may	6
lorimer system	6
man named	6
office trunking	6
illustration fig	6
william cook	6
will fight	6
locking circuit	6
deaf mutes	6
also known	6
another one	6
small office	6
block wire	6
horseshoe magnet	6
distance calls	6
taken seriously	6
national telephone	6
nobody else	6
long island	6
proper ringing	6
cornell university	6
system shown	6
first station	6
better service	6
communications privacy	6
may call	6
fundamental principle	6
automatic shunt	6
irish coast	6
branch operator	6
seemed little	6
little hut	6
main line	6
operating system	6
magnetic material	6
telephone pioneers	6
comparatively low	6
will act	6
local calls	6
ten million	6
resistance element	6
high potential	6
comparatively high	6
telephone receivers	6
figure shows	6
two electrodes	6
hard work	6
first set	6
cotton insulation	6
battery manual	6
extreme right	6
armature core	6
specialized knowledge	6
transcontinental telephone	6
still alive	6
holding coil	6
regular intervals	6
interconnector selector	6
arc lighting	6
first great	6
trunk leading	6
social engineering	6
primary sources	6
hackers conference	6
postmaster general	6
rotary movement	6
may even	6
greater simplicity	6
third wiper	6
circuit cells	6
chapter xiii	6
three miles	6
flat rate	6
blake transmitter	6
still far	6
manual practice	6
decimal register	6
flexible conductors	6
south pole	6
bridging battery	6
particular line	6
talking battery	6
currents originating	6
average ten	6
court street	6
will close	6
release wire	6
placed across	6
resistance coil	6
telephone wire	6
piano strings	6
various kinds	6
coil associated	6
connected subscribers	6
private companies	6
monkey wrench	6
normal positions	6
line selective	6
circuit employed	6
currents sent	6
called number	6
line jacks	6
enforcement officials	5
magneto line	5
mechanical construction	5
enamel wire	5
cut straight	5
good fortune	5
business basis	5
never got	5
another section	5
excellent idea	5
will now	5
private line	5
second station	5
never heard	5
various stations	5
selector operation	5
now known	5
telephone operators	5
drop will	5
wise guy	5
local exchange	5
may result	5
ani controller	5
carlson multiple	5
might say	5
telegraph system	5
middle west	5
steel wire	5
usually provided	5
automatic transmitter	5
quite possibly	5
special service	5
organized crime	5
home button	5
well established	5
others like	5
three seconds	5
great idea	5
active part	5
falling back	5
john carty	5
will talk	5
circuits will	5
many stations	5
two condensers	5
vertical movement	5
great enterprise	5
will produce	5
makes contact	5
massachusetts institute	5
switchboard cord	5
vocal physiology	5
units digit	5
soon afterwards	5
two cores	5
rolled condenser	5
connecting link	5
front end	5
four wires	5
cellular phones	5
wound clearing	5
one important	5
lever hook	5
battery equipment	5
called party	5
switch may	5
kansas city	5
already stated	5
present day	5
lightning arrester	5
protective means	5
hand winding	5
resistance material	5
large measure	5
common sense	5
asked sam	5
capacity across	5
another call	5
calls originating	5
lamp mounting	5
american cities	5
everything else	5
particular arrangement	5
upper contacts	5
bar electromagnet	5
test boards	5
high insulation	5
automatic exchanges	5
words spoken	5
samuel morse	5
traffic study	5
coil will	5
next year	5
first practical	5
many forms	5
secure foreign	5
briefly outlined	5
stuff like	5
upper limb	5
relay armatures	5
ordinary series	5
larger exchanges	5
two views	5
carbon particles	5
small currents	5
south america	5
line test	5
now come	5
transmitting speech	5
talking wire	5
signal system	5
without saying	5
ringing machine	5
new hampshire	5
human race	5
radio station	5
lines passing	5
calling cord	5
high enough	5
times per	5
will continue	5
entry private	5
distance operator	5
power circuits	5
connected directly	5
apparatus capable	5
switchboard may	5
electronic civil	5
cord rack	5
short description	5
also serves	5
one cell	5
wire strung	5
front contact	5
answering plugs	5
professor morse	5
several hundred	5
four inches	5
north electric	5
circuit including	5
enough current	5
wiper arm	5
armature circuit	5
public exchange	5
better way	5
carbon element	5
relay becomes	5
second time	5
magnet cores	5
commonly referred	5
washington dc	5
alarm contact	5
blue jeans	5
two conducting	5
test wire	5
single rotary	5
hook switches	5
past three	5
computer community	5
switchboard will	5
wray selector	5
cpsr roundtable	5
called battery	5
private mail	5
wireless stations	5
coevolution quarterly	5
bridging party	5
manufacturing companies	5
page numbers	5
technical journal	5
standard practice	5
new wonder	5
telephone pole	5
ten miles	5
primary windings	5
tufts college	5
branch terminal	5
american engineers	5
path across	5
one volt	5
looked like	5
high voltages	5
universal practice	5
first telegraph	5
current strength	5
hand set	5
early telephone	5
wire circuit	5
proper charge	5
direct line	5
best known	5
good luck	5
insulating medium	5
short circuit	5
direction will	5
free speech	5
simultaneous connections	5
wire running	5
transmitter front	5
chain reaction	5
side tone	5
potential wire	5
code signaling	5
rotary connector	5
switching device	5
partial multiple	5
took place	5
wound relay	5
diagram showing	5
telegraph circuits	5
normally held	5
visible signal	5
rotary relays	5
divisional apparatus	5
kellogg system	5
manhole covers	5
best adapted	5
ringing purposes	5
readily accessible	5
may reach	5
systems will	5
hot water	5
without disturbing	5
two paths	5
exactly like	5
telephone field	5
drop type	5
next step	5
relay illustration	5
vertical rows	5
positive charges	5
made fast	5
two primary	5
patent attorney	5
receiving set	5
local board	5
enameled wire	5
busy lines	5
good telephone	5
external circuit	5
station called	5
rearwardly projecting	5
hundreds digit	5
negative pole	5
electrical condition	5
plug will	5
operation may	5
flat rates	5
acousticon transmitter	5
wireless station	5
depolarizing agent	5
silicon valley	5
one key	5
free expression	5
different parts	5
training center	5
thousands digit	5
intercommunicating systems	5
new line	5
magneto transmitter	5
will eventually	5
just one	5
two make	5
los angeles	5
electrical contact	5
magnetized steel	5
will occur	5
electrical machine	5
two plugs	5
variable resistance	5
physical science	5
wonderful things	5
modern magneto	5
magnet coils	5
found idle	5
magneto work	5
ohms resistance	5
vertical spring	5
personal computers	5
current type	5
plunger rod	5
independent telephone	5
particular one	5
eleven hundred	5
armature may	5
becomes necessary	5
harmonic systems	5
much smaller	5
spring type	5
device fraud	5
test contact	5
per foot	5
entire structure	5
jerry dalton	5
professor pupin	5
mike godwin	5
kellogg western	5
paraffin wax	5
silk insulation	5
donn parker	5
magnetic needle	5
ringing battery	5
comparatively simple	5
paraffin oil	5
new invention	5
click will	5
left free	5
lead sheath	5
will reach	5
telephone bell	5
mirror galvanometer	5
electronic switching	5
run away	5
eight inches	5
scientific attainments	5
access devices	5
us secret	5
eight thousand	5
phone lines	5
first man	5
single pair	5
transfer circuit	5
less likely	5
also operated	5
security personnel	5
office trunks	5
automatic exchange	5
several ways	5
manual exchanges	5
subsequent chapters	5
another important	5
every time	5
office will	5
auxiliary lever	5
battery working	5
computer police	5
ring side	5
certain conditions	5
wireless apparatus	5
relay associated	5
phrack magazine	5
entire group	5
whose line	5
telephone call	5
axis will	5
tandem office	5
sounded like	5
every morning	5
teenage boys	5
power transmission	5
look back	5
states navy	5
hand cut	5
like many	5
per call	5
federal prosecutors	5
just enough	5
telephone transmission	5
public officials	5
wires running	5
circuit open	5
even greater	5
galvanic battery	5
rapidly growing	5
sulphate salts	5
separate battery	5
calls made	5
turned back	5
search warrants	5
general principles	5
right direction	5
currents coming	5
another example	5
apple computer	5
private lines	5
switching system	5
wire gauges	5
test board	5
back signal	5
cord conductors	5
may exist	5
wireless communication	5
simplest possible	5
electric motors	5
particularly well	5
brought together	5
line terminals	5
office generator	5
upper contact	5
action will	5
seven years	5
glass jar	5
underground cables	5
front view	5
calling apparatus	5
much time	5
far better	5
first suggestion	5
generator shunt	5
melting alloy	5
dom pedro	5
sometimes necessary	5
local police	5
alarm contacts	5
corresponding jack	5
right hand	5
young tutor	5
answered mr	5
every year	5
insulation single	5
receiver shell	5
thousand years	5
single exchange	5
automatic office	5
corresponding number	5
will go	5
call circuits	5
mail systems	5
consumed plate	5
twenty feet	5
every city	5
tapper ball	5
three wires	5
whole world	5
every man	5
will mean	5
connection will	5
within hearing	5
different frequencies	5
sending instrument	5
blue end	5
hand generator	5
york times	5
one single	5
telegraph service	5
complete telephone	5
far greater	5
centennial exposition	5
exeter place	5
service work	5
general practice	5
power switchboard	5
metal shop	5
exclusive use	5
hundred times	5
connector shaft	5
leyden jar	5
system without	5
forms one	5
robert izenberg	5
power apparatus	5
loose contact	5
telephone dispatching	5
extreme simplicity	5
tail cap	5
transmitter circuit	5
already switched	5
latching relay	5
charles boykin	5
stepping impulses	5
relay coils	5
spring will	5
shall see	5
inches deep	5
line drop	5
trunking system	5
bridge paths	5
dry cells	5
free ends	5
zinc electrode	5
stations may	5
small space	5
printing telegraph	5
automatic ringing	5
combined main	5
great invention	5
practical operation	5
twentieth century	5
business man	5
world war	5
mounting strip	5
small enough	5
another group	5
mica slip	5
first digit	5
circular mils	5
another method	5
relay magnet	5
quite likely	5
service agent	5
get rich	5
electric heating	5
operated whenever	5
ampere hours	5
must flow	5
replied mr	5
different pairs	5
cambridge university	5
two points	5
information security	5
harmonic ringer	5
multiple connections	5
now generally	5
negative charge	5
actually made	5
circuit impedance	5
gurps cyberpunk	5
microtelephone set	5
every direction	5
civil rights	5
hydrogen bubbles	5
relay operates	5
station may	5
sectional view	5
price per	5
usually employed	5
copper wires	5
desired line	5
software piracy	5
acid phreak	5
steel rod	5
public safety	5
terminal multiple	5
telephone codes	5
practical purposes	5
will attract	5
calling side	5
constant current	5
another factor	5
may vary	5
abbie hoffman	5
many things	5
get rid	5
without much	5
telephone association	5
supply circuit	5
current required	4
group containing	4
small size	4
go right	4
mere money	4
important piece	4
three hours	4
kapor says	4
professor gale	4
boston globe	4
morse circuit	4
electrical measurements	4
silver cell	4
electrified wire	4
four months	4
parking lot	4
may say	4
hacker underground	4
strike across	4
ordinary telephone	4
harvard university	4
long time	4
series telephones	4
described later	4
party calls	4
polarity method	4
anyone else	4
opposite end	4
simple enough	4
storage cell	4
death star	4
commercial power	4
without funds	4
local trunks	4
gardiner hubbard	4
total time	4
placed opposite	4
one evening	4
whole matter	4
striking distance	4
one morning	4
frequency currents	4
key type	4
total magnetization	4
stand proper	4
will step	4
chapter ii	4
entire office	4
system wherein	4
closed contacts	4
formerly instructor	4
telephone calls	4
dissimilar elements	4
private enterprise	4
phone network	4
extensively used	4
per busy	4
pirate bulletin	4
relay contacts	4
private exchanges	4
pretty much	4
blocking sets	4
middle dial	4
one cent	4
inductive neutrality	4
sting boards	4
current source	4
ultimate requirements	4
single cell	4
wire board	4
went well	4
keyless trunk	4
physical society	4
switching devices	4
fundamental idea	4
charged element	4
one revolution	4
harmonic method	4
kellogg trunk	4
bridging telephone	4
voltaic cells	4
another office	4
certain rate	4
waves per	4
zinc cup	4
circuit battery	4
current without	4
sixteen years	4
assistant examiner	4
apparatus used	4
young telephone	4
key contacts	4
contact pins	4
regular cord	4
ear piece	4
yoke piece	4
million people	4
will report	4
switchboard field	4
complete run	4
telephone instrument	4
press coverage	4
wide open	4
electrical problems	4
telephone power	4
vacuum arrester	4
first impulse	4
relay racks	4
great man	4
key shown	4
coil winding	4
unix nodes	4
proper size	4
circuit passes	4
say anything	4
new art	4
metal plates	4
line increases	4
american physical	4
abraham lincoln	4
low cost	4
nine years	4
telephone became	4
make use	4
clear idea	4
goofy prototype	4
sending key	4
get married	4
usual form	4
another contact	4
thousand francs	4
ratchet wheels	4
hand five	4
service meters	4
universally employed	4
recent change	4
ready path	4
two local	4
larger wire	4
easy reach	4
technical school	4
selecting relays	4
current frequency	4
four principal	4
corresponding supervisory	4
trunks will	4
hundred people	4
companies throughout	4
black hair	4
may learn	4
laughed ted	4
three general	4
platinum point	4
circuit across	4
observer will	4
ribbon fuses	4
angel gabriel	4
universal telephone	4
two brothers	4
currents used	4
glass tube	4
connection terminal	4
battery potential	4
nowhere near	4
complete line	4
scientific knowledge	4
many centuries	4
carbon transmitters	4
proprietary software	4
vibrating tuning	4
another interesting	4
five weeks	4
operator desires	4
wide variety	4
circuit work	4
consulting electrical	4
battery stations	4
million dollar	4
eiffel tower	4
half revolution	4
act like	4
drawbaugh case	4
charging generator	4
fine iron	4
directly produce	4
hand pole	4
one unit	4
glass jars	4
bridging magneto	4
new inventions	4
simple voltaic	4
strong currents	4
detailed information	4
wooden box	4
restoring circuit	4
single one	4
left behind	4
telegraph circuit	4
almost universal	4
legal system	4
series telephone	4
office exchanges	4
switching functions	4
modern multiple	4
telephone people	4
direct action	4
placed within	4
one impulse	4
also invented	4
office equipments	4
gave bell	4
tom watson	4
easy matter	4
protested ted	4
three contacts	4
musical telephone	4
circuit changes	4
may serve	4
liberated hydrogen	4
nothing like	4
expert witness	4
lines terminating	4
conductors leading	4
technical schools	4
single party	4
block arresters	4
switchboard apparatus	4
established communication	4
reis machine	4
thin sheet	4
small group	4
may find	4
magnetization curves	4
operator presses	4
electronic publication	4
frequently called	4
associated apparatus	4
switchboard transmitter	4
actual practice	4
either end	4
outer edge	4
mitchell kapor	4
psap reports	4
border patrol	4
center checking	4
portable desk	4
drainage coils	4
private security	4
dispatcher calls	4
various types	4
convertible cord	4
cops know	4
software pirates	4
largely employed	4
distance operators	4
another line	4
line connected	4
frequently employed	4
pole will	4
without losing	4
two separate	4
party station	4
average number	4
practical telephone	4
line jack	4
close proximity	4
battery symbols	4
test system	4
automatic sub	4
capacity reactance	4
ali dms	4
iron pole	4
barbara golden	4
enamel insulation	4
key arrangement	4
larger ones	4
will hear	4
desk type	4
metallic circuits	4
second later	4
will see	4
submarine signal	4
trunk cord	4
metal blocks	4
explained mr	4
ringing systems	4
split repeating	4
principles involved	4
terminal wire	4
hundred pounds	4
differ materially	4
university college	4
position switchboard	4
nothing happened	4
telegraph relay	4
copper electrode	4
hand gong	4
switch springs	4
first noticed	4
first party	4
conducting bodies	4
pole circuit	4
two coils	4
security officer	4
locking relay	4
oliver heaviside	4
wireless bulletin	4
large numbers	4
mysterious noises	4
also made	4
master control	4
federal police	4
within reach	4
calling person	4
complete connection	4
sure enough	4
polarized bells	4
social responsibility	4
many respects	4
rotary sides	4
six times	4
one party	4