davidaulloa/AmericanStories huggingface dataset:
New-York tribune., 1922-11-19
Use Two r + Stages

Question: understand that to get vol
uine enough for a loud speaker power am
nlif1ers Will be necessary. Am l right I?
The question is, with fair volume in the
head phones for a two-stage ampifer
VIII two or three stage power ampllfler
operate loud speaker?-S. C. w.
Answer-The trouble with increasing
the number of stages of audio-fre-
quency amplifcation beyond two is
that all audible sounds are amplified
as well as the incoming signals. Con-
sequently it is not advisable to 10 be-
yond the number of stages that are
absolutely necessary to give loud
speaking results. Two stages of audio-
frequency can be power tubes, using
the standard audio-frequency cannec~
tions and increasing the plate voltage
to the point which gives maximum re-
suits. Where the output of the de-
tector tube is very weak, then it will
be advisable to use one or more stages
OF radio--frequency amplification ahead
Of the detector in order to build up
high frequency currents before they
are rectified by the detector. In your
particular case would recommend two
stages of radio-freouency amplifcation,
q detector and two stages of audio-
frequency with power tubes.
New-York tribune., 1922-11-19
Novel Telephone Plug With
ChuckIike Connectors

The Radio Improvement Company's
plug. Plugs have other purpose. IMAM
that of making convenient connec-
tion for phones or loud speakers. Take,
for example, the type of phones or
speaker that requires connection in one
definite direction with respect to the
current flow in the plate circuit for
leads are correctly connected to plug
at the outset, it is impossible to make
wrong connection later. The head
phone can be removed and the speaker
attached in their places by the simple
formality of pulling one plug out of
the jack and inserting the other.
Connection of leads to this plug is
both simple and positive. The base of
this plug is polished hard rubber
cylinder one and three-quarter inches
long and an incl in diameter. When
the milled brass cap supporting the
contact shank at the end of the hard
rubber cylinder is unscrewed, two spe-
clal terminals will be found extending
OF these terminals is connected to the
knob at the end of the contact shank.
while the other leads directly to the
shank itself. The two parts are care
fully separated with insulating mate
rial so that they form two distinct cir
cults.
The terminals are miniature brass
chucks designed to take the standard
sizes OF tips used at the end of phone
ieads. One tip is placed in each Of the
chucks and the milled sleeves are
turned down tightly. This forms a
connection so solid that only an exces-
sive strain will pull them free. or
course, 1t is necessary to thread the
lead through the hole in the end of
the hard rubber cylinder before finally
fastening the tips in place. If it be
desired to connect small wires to the
plug, they may be inserted in holes
drilled through the side of the terminal |
posts and the milled sleeve turned
down upon them to hold then in place.
MManufactured by Radio Improvement
Company, New York City.
New-York tribune., 1922-11-19
Two Stage Receiver Provides
Posts for 5 Paira nf Phones

Observation-Disclosures Is a reg
ular "three-passenger" radio outfit
which threatens to solve the problem
of how the other two enthusiasts in
the family can listen in while son
tunes to the music, The Entertain-A-
Phone has six telephone binding posts
along the right edge of it's front panel
and little three-point switch mounted
beside them to throw one or all three
pairs in, as desired.
The input to this multiple phone
terminal arrangement consists Of de-
tector and two stages of audio-fre--
quency ampliication. From the aerial
and ground posts at the upper and
lower left-hand corners Of the panel
leads go to single layer induction
coil with an 8-point switch in series
on the ground side to tune the aerial
circuit. A rotor mounted at the upper
end of the 4-inch tube is wound
with the secondary coil. A 23-plate
condenser in this circuit is used TO
tune it to the frequency Of the incom-
pressed upon the grid Of the detector
tube through q grid leak and con-
denser.
The tube sockets are of solid black
nodded composition and all post con-
nections are well soldered to prevent
the not uncommon source Of trouble In
loose contacts. Transformers are of q
standard construction and perform
their duties. In series with the fla
ments of each OF tho tubes is rheo-
stat, all three being controlled by small
hard rubber knobs mounted along in a
row on the panel front. A graduated
dial beneath the pointer Of the detector
tube rheostat enables the operators to
duplicate an adjustment at this criti-
cal point in the circuit. Both the rotor
carrying the secondary winding and
the condenser are controlled by three
inch hs d rubber dial knobs on the left
side o. t..e panel.
A black hardwood cabinet, fronted
with substantial composition panel
contains the working elements of the
set. The cabinet measures 18 inches
in length and 65a in depth and height
Connections to "a" and "B" batteries
are made through holes at the rear of
the cabinet to heavy brass binding
posts. All the necessary connections
are clearly indicated and complete
set of directions for operation fastened
to the inside face of the hinged cover
make it practically impossible for the
novice to go astray. Manufactured by
the New York Coil Company, New
York City.
New-York tribune., 1922-11-19
Loud Speaker Equipped With
Am Adjustable Diaphragm

"Coryphone" Loud Speaker (type B.
530) Mounted upon the neatly fin-
ished, disk-shaped base Of the "Cory-
phone" Speaker is a low, heavy metal
case in which the sound waves origin
ate. The methed used in the reproduc-
tion of the speech or music is the same
as that used in the most common types
of head-phones, the design being modi-
fed so that the mechanism will func-
tion satisfactorily when relatively large
amounts of energy must be handled
Both diaphragm and magnets are
practically twice the size of those ordi-
narily found in headphones. The fiex-
ible portion of the diaphragm is nearly
three and one-half inches in diameter
and it is held rigidly il place beneath
the top Of the casing by ring of cast
steel clamped against it with machine
screws. Beneath the diaphragm is a
metal cup containing the laminated
magnet poles and the windings that
carry the current output from the set.
Both windings and poles are imbedded
in an insulative compound to protect
/ them mechanically and electrically,
The distance of the diaphragm from
the pole faces has decided effect upon
! the volume and quality Of the sound
produced. For this reason the head of
the casing carrying the thin, soft iron
vibrating element is threaded so that
1t may be screwed in toward the mag
net or away from it as results show
best. When the most satisfactory set
ting is obtained thumb crew on the
side Of the case will lock the adjust
| ment.
| Leads from the magnet windings
! pass through the interior of the
wooden base to two terminals on the
outer edge. Connection is made from
these direct TO the phone" posts of
the set. The connections are firmly
made and all the parts are so solidly
fastened together that it is impossible
to conceive OF the apparatus getting
out of order, unless it has been at
| Sacked by an overly inquisitive young.
! ster with screwdriver
| The horn is of a dull black enameIed
1 sheet metal. 1t stands 81 inches high
over all and has filared opening ID
| inches across. Music reproduced in
the speaker has characteristic deep.
Shroated tone, which could readily be
New-York tribune., 1922-11-19
Sunday, November 10
WE, Newark (360 meters)

lO:30 a. m.-Musical program.
III a. m.--Morning prayer and Holy
Communion church services Of st.
Thanas's Church, Fifth Avenue and
Fifty-third Street, New York. The
Rev. Dr.. Ernest M. Stires will Of
ficiate. r. Te-tius Noble, organist.
viii direct the boys and mems choir
of seventy voices.
3 p. m.- Radio Chapel services, SER
mon by the Rev William Wilkinson
Sacred music program
$40 p. Boys Reading" by Frank
lin X. Matthews.
$50 p. m.~-s,The Bubble Books THAI
Sing by Ralph Mayhew.
z p. nn.-Adventure stories for older
boys and girls.
1850 p. NJ Representations" by Mrs.
Cuytis Burnley Railing.
.aS P. nn.--Literary program.
8 p. Concert.
ssI5 p. an Mme. Nouvart Dzeron
koskarian. neazo soprano, witch fiute
obligatos by William Schade and
piano ascompaniments by Miss Kay
Program from .The Land OF tho
Sky Blue Watersa: .The Moon Drops
Low fCrow,s Egg aArmerssr
Felix Scngs.v I'm Chinnare Yarre >
Where Ny Caravan Has RestsSa
"T'iil / Awake aHer Drssr, !,
Crossing the Bar" San Toi ? sD,,sk
in june" and @At Dawnine.a
sos p- nl.aThe Work of Mo.,or
Picture Director Allan Dwar
$3.50 p. ni.--a Romeo and Juliet.n hv
Mona Morgan.
WGY, sekeneetaay ssse Meters
New-York tribune., 1922-11-19
Telephone Jack Has Binding
Post Connecfors

aImproved" jacks (open circuit type,
Jacks have been designed to make
and unmake all sorts of connections bv
the mere insertion Of plug, but the
most simple of them all is the omen
circuit type. In this form Of Jack the
circuit is left open when the plug ia
removed. They can be used in several
parts of the circuit, but the most
common application is to the aerial-
ground connections and the phone
connection in single-tube set or the
final stage Of an simplifying series.
The improved" jack may be set into
the front Of any panel by drilling a
three-eighth inch hole to take the plug
sleeve. At the back of one and one.
half inch nickeled brass disk. into
which the sleeve is screwed, there are
terminals for the connection of lead
wires. A disk of insulating material
separates the two, the terminal with
the contact clip being fastened only
to the non-conducting surface. Insu-
lated screw holes are provided for
fastening the disk to the panel. hut
If the sleeve is turned down tightly
so that the two washers grip the panel
1T is unnecessary to use these addi-
tional fastenings. Manufactured by
Radio Improvement Company, N. Y.
New-York tribune., 1922-11-19
- The Tribune Radio Comment and Advice luck Rnns
Talking by Radio Fro,,
Depths of Coal Min.
British Cofliery Tests A.. 8.
cessfuI, and ValuaI,Is n.s' / oae'
Are Obtained 'a
k' *
.4--1..-.a.


Interesting results were oh..s-
experimenters at the Bsrsesssss.aea "
lierg in Birmingham, Envis,Ss Csis
days ago. Efforts were MAJ. = Ssv
nit messages from dspsb sssss.
yards TO the surface. A thyss.samh g 1s
WAS used. The aerial was srs%s' ,.aOs ~
singing wire from stssI Lsc Lsssc y
gear 100 feet high TO a girssr s.s's,ag y,
railway bridge, a
The ground wire wss slamn.S !.
lower part Of a railroad rail ar = 20
the transTnitter and It's aerial ,..s =. a.ss
stalled In the steel cage, but s@sss ~0ss y.
able screening effect was sxns,ss.s ss.as!s
Tests were made at various ssss.s ss
down the shaft, and recsn4is.
found TO be clearer when trsnsm.ss ss
was made at the lower points S
was thought to be due 10 press... ~
structural steelwork, which ufsss s.s
caused screening higher Up. 4s's
Another experiment was MAD.
taking the transmitter along the 80
ings and grounding wag effeesA5 /.
bringing length Of cable aIsnes
floor. The aerial was sluns hs.v.ss
pit props. Signals were cYearlv !.
ceived at the pit mouth, althoryb :. =
ing to limited power Of the transm,s,..
telephony was weak. Il was suggsss.s
that the carbon in suspension 'ns'sss Is 4.
air was having an absorbing effse4 = !.
the signals. Wireless World.
New-York tribune., 1922-11-19
Local Radio Council
States Annual Show
Will Be Held March
Restricted to Amateurs and
Their Friends Interested
: in Radio Only; Idle Sight
seers To Be Eliminated

The following statement was isued to
the Tribune Radio by the Second Dis
trict Radio Council in connection with
the story printed last Sunday detailing
the withdrawal Of the Radio Club OF
America from membership in the coun-
Gil:
"Thc council will hold it's third an
nual convention at the Hotel Pennsyi-
vania March l, 2 and g.. 1928. At this
convention there will be booths for eX-
actly twenty bona fide manufac-
turers of radio apparatus. This con-
vention will be open to all Of those
really interested in radio, and will un-
doubtedly be the real classic Of the sea-
son. The overcrowded conditions Of
last years convention will be avoided
be secured either through the secre-
tary or members of the affiliated clubs.
The idea is, If possible, to keep the idle
sightseer out of the convention hall
and give those sincerely interested e
chance to see what is going on.
he main exhibition will be held in
the roof garden, and the adjoining But
terf1y Room will be used by the clubs
tor their exhibits and also as lecture
hall. There will be historic exhibitions
Of oldtime amateur apparatus, together
with some Of the record breaking trans
mitting sets. There will be the uaual
speed contest for operators of both
sexes. The last night will, Of course,
be the big event-the banquet. AT last
years banquet there were over a thou
sand people, and it is hoped to even,
eclipse this record Of 1922.
The council, at the present time, is
8 strictly nen-commercial organization
numbering among its members, some Of
the best known radio men In the coun-
try. Every worth while radio club ia
represented and the tnembership is
constantly growing, six new cluba be-
ing admitted for membership during
the month OF October. 1t is regretted
that the Radio Club Of America Mss
seen fit to resign its memberships. Fors
mer President MacMann was q ranre.
sentative of Q radio club that had haan
dsfunct Tor some eight months. and
when his leadership was questioned bs
toog s the only course and resigned.
The council is in excellent cond;-
ton at the present time. hav;ng (.
growing membership, with large ana a..
i've meetings, End despite the disma,
predlctsons from certain quarters 4
VIII continue. ss an amateur orgaY;,ss
Ton Tor many years to come. pureIv
amateur organizations have uaw ~
getsang along and prospering II .Ss
stands for" "as siias "
New-York tribune., 1922-11-19
Steamer MatsOnia Covers
Big Distances by Radio
Has Telephone Conversation
With Apia, Over Four
Thousand Miles

The steamer Matsonia, which Is
equipped with 1000 watt. G.. e. radio
telephone and telegraph set. talked by
means OF its telephone every morning
from September IL until September
20. the day before she arrived in San
francisco from Honolulu, with the
radio station at Apia., British Samoa.
Inc last conversation was at $3.50
O'clock In this morning and at that
tune the Matsonia was 1850 miles
station, KHK.
On this voyage the Matsonia was in
Faciophons communication the entire
round trip with either the San Fran
cisco Office Of the Radio Corporation
Of Anerica, KTH, or the Hawaiian
station, XIX,
Some extraordinary daylight radio
teiephone records have been made by
this ship. One was with tho Naval
radio station at Pearl Harbor at
midday when the vessel wat i,475
miles away
All the ships telephone work was
done ON . wave length Of $50 meters
New-York tribune., 1922-11-19
Using A. C. for Filament

Question--Your advice against using rec
tined A. c. received, and | thank you for
warning me. but / wish to make known
the fact that It is impractical for. me to
take my storage battery home with me. aud
CHRISTMAS vacation Unless I purchased
the w. D. eleven tubes (Which are TOO ex. .
pensiHe for mel dry cells would soon wear
out The use of A. c.. therefore is almost
necessity. So. may I repeat my former
question as to how I may use rectiied
A. &. to light the filaInents I'll. T.. G.
Answer still adhere to, nv advice
10 you not to use rectifed A. c. be-
cause the expense will be far greater
than by using the w. d. II tube. In
order. to get efficient service from
the, A. c. light, you would have to
put in power rectifer similar to
the tungar tube, which alone will cost
you as much as the w. D. IL tube.
and then you would have to put in a
very complicated filter circuit in order
to have it operate at all. You cannot
use chemical rectifier for this sery-
ice and get efficient operation. The
w: D. IL tube will operate on a M
volt dry cell battery for at least three
months with normal usage, so that In
the long run it will be far cheaper.
New-York tribune., 1922-11-19
The Daily Radio Program

1880 a. m.--Morning services. con-
Quoted by the Rev. Ernest caldecott.
A;30 p. m.--Vesper services. Sernon
by the Rev. Fl. w. True.
WGI, Medfcrd Hillside. Mass faso
meters)
p. na:--"The Family Circle; concert
oy choir Of First Unitarian Society
u west Newton: Seek Him That
Ave Maria,n "Eritu' from "MasLad
Ball" "The Little Red Lark" aTha
Shepardess," 20 Come Every One
That Listeneth,n "Berceusea from
JoceIyn; Hunting Song"
o:So p. M Boston police reports.
s'So p. Radio church service. con-
quoted BY the Rev. Malcolm Taylor
p. m.--Eyening musicale: All Santa,
Church Of Brookiine, w. L. Sargeant.
choir master.
= kDkA, Pittsburgh (s6O meters,
i0sa5 a. m.--Ssrvices of Emory M.,h-
Wofford T. Duncan. minister.
2:sb p. r.-Chiidrenss Bible story hy
the Rev. w. A. Logan.
2. sa.---Organ recital by Harvey p
Gaui, D.
As4S p. nl.-yesper services az tba
Shadyside Presbyterian Church. she
rev. Hugh Thomson Kerr. D. D.,
pastor.
i3u P. m.--Seryices OF the East End
Christian Church, the Rev. John Raw
Ewers, pastor. 4 A
KYW. Chicago ts6o meters)
$3.50 ?. m;--Radio Chapel services con-
oacsed by the Rev. James j.. Mertz,
D. j. Music furnished by the choir
OF st, ignatius Church.
New-York tribune., 1922-11-19
Glass Encased Crystal
Defector Stand

Paeent Crystal Detector--A good
crystal mounted in glss case will re-
tain it's sensitivity remarkably we'll.
Dust cannot accumulate on its surface,
and the thin Aim Of oil left by meddle-
some fingers will not dull It's action.
Upon q two-inch. hard-rubber disk,
forming the base of the Paeent Detec-
tor, is metal cup to hold the half
inch slug In which the crystal is en-
bedded. Around this is cylinder of
heavy glass surmounted by cover of
hard rubber. Through the top Of this
cover extends the rod with fine cop
per wire whisker fastened to it's lower
end. The rod slips up and down in a
ball Joint, the adjustment being made
by the movement Of hard rubber
knob at the top end of the rod. Top and
glass case may be removed by unscrew-
ing thumb nut at the end Of verti-
cal screw extending from the base to
the cover inside the casing.
Outside che glass cylinder on the
edge Of the base are two small termi-
nails for connecting the device into the
circuit. Brass strips laid in grooves
across the bottom Of the base connect
these terminals to the cup holding the
crystal and to the vertical screw that
completes the circuit to the ball joint
on the, whisker support. Manufactured
by the Pacent Electric Company, New
York City.
New-York tribune., 1922-11-19
Air Service Radio School

A new army radio school for train
ing Air Service radio aperators and
electricians has been established at
Chanute Field, Iii. The school was re-
Gently removed from Post Field, Okla,
and new classes for radio Instruction
are being formed. 1t will he equipped
with All the latest radio devices, IN
Guiding apparatus fer aerial work In
both heavier and lighter -than-air craft.
Enlistments for training In radio for
the Army Air Service are now being
accepted at Ehanat@ Field, where q
six months course will start within
q fsw weeks,
New-York tribune., 1922-11-19
Hard Tubes as Detectors

Question: have g. bunch az 4Atver,
Hl-MU tubes and also some Radiotron
sOl's; Win these tubes function az we'll
LOT detectors as soft tube? II so, is a
grid leak necessary and what wn,t . %
should be used on the 20i's and the
Myers? had soft tubes but sold them,
cannot pick cp Newark or any distant
seatiop and do OF know why WHAE
comes In as loud as WGY. but cannot
seem TO get anything further away. Is a
variable condeser necessary in the anterlna
circuit when g tap 10 taken off every turn
for ten turns?--sK. X.
Answer-It will be perfectly all right
to use either of the two tubes that you
mentioned as detectors, with a Grid
leak OF approximately one megohm. Il
IS absolutely necessary to have yari-
able condenser in the aerial circuit
under the conditions that you have
cited, but it would be refinement in
tuning. -
New-York tribune., 1922-11-19
Big Chinese Program,

The new radio program il cs,s.
calls for the construction Of four via.
less stations. One in Shanghai l. sa
be larger than any now in exlsteaca is
this country. Completion Of this ~.
ton will mean direct Communicates.
between the United States and Cbius
New-York tribune., 1922-11-19
Organ RecitaIs To BE r;ye,,

VIZ at Newark will broadcast orzss
rsc'tAis twice week during the esr. s.
ing winter. The organ, because oi d
purity Of note and great versatIliT,
has been one Of the few instruments
which is we'll adapted to radio trsas.
mission.
New-York tribune., 1922-11-19
What a Ballast Tube liz

Question-v-Mhat Ia the bal,ass tnna -,
IN the Aeriola Grand. and what is ia MIR.
Answer-The ballast tube used in Il, =
Aeriola Grand is designed to balanas IL ~
.he fiament current Of the tnbes' -
that rheostats are not necessarv nv ~
purpose Of this, of course, is To- reduce
the number of controls to tho lowass
possible minimum. sAo ioWsas
New-York tribune., 1922-11-19
Report Of Tribune Institute
Radio Laboratory for Week
Apparatus Tested and Approved Include Two Stage
Receivers, Loud Speaker, Crystal Detector
Stand and Telephone Plug and Jack

The following apparatus and instiu-
ments we're subjected to complete and
thorough tests under actual conditions
in the radio laboratory of The Tribune
Institute during the week. All have
been given the Institute seal of APP
provai;
New-York tribune., 1922-11-19
Negatiyc Riasina Battery

Questionable diagram showing the
push pull system OF smpllflcation omitted
to show the &C" battery. l assume that
this Is battery of two or three cella
placed beween the secondary connection
on the transformer and the grid on the
amplifier of each tuba. II this assump-
ton is rot correct I should be glad to
have you advise mel. c. s..
Answer--Your assumption regarding
the &c" battery is quite q. rrect. The
amount of voltage on the grid can be
determined by experiment and will, Of
course, be dependent upon the plate
voltage. For the purpose of efficiency,
however, I would suggest that this bat
terry be inserted on the flament side
of the transformer secondary, rather
than on the grid side, but it should,
of course, be placed in such way that
it maintains the negative bias on the
grid.
New-York tribune., 1922-11-19

recognized when the output of the test
set was switched from ones to another
of several loud speakers in the radio
laboratory. 1t has anything but what
is ordinarily termed q "tin" quality
Manufactured by Charles Cory g. Son,
Inc, New York City.
New-York tribune., 1922-11-19
Dry Cell Tube Ampliflers

! QUESTIONABLE there any ampiifysng
bulbs made that operate on dry cell,
ampifying tube that operates on a stor-
age battery 7F. y.
Answer--The Aeriotron w. D. eleven
tube will act very satisfactorily as an
ampiifier and is practically equal to
the wv 2o1, provided &C" battery is
used to maintain negative bias on
the Grid of each of the amplifying
tubes. In this manner 100 volts can
be placed in the plate circuit of these
dry cell tubes, provided negative bias
Of three volts is placed on the grid.
New-York tribune., 1922-11-19
y Canadian Link Completed

Ihe completion of the new. wiraless !
ns.t nsaslon sma A. La Prairie, Canada will con-
aect Sydney, Australia. and Iondnn