THE SCIO TRIBUNE
Mr. Dairyman
Do you know that you can
MOST ECONOMIC Al
PRODUCER OF FOOD
Wiring Diagram of a Three Tubs Nsu tralirsd R«d<k Rsceiver That Employe
Rvflsa, for Which Strength. Tons, Mir.imum Oistortlan Ar« Cl»>r»*ff.
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By SIDNEY E FINKELSTEIN,
In Naw York Hara-d Tribune.
Th* neutrodyn* may be au«-cr«afully
rv flexed even as to both eterea of
transformer coupled audio ampline»
tlon. so that only three tut*«« are
nee«1«-d Instead of five In prartle* it
has been found that thia maximum
reflexlng of the neutrodyne la best
achieved by rwsnrtlng to the Invers*
duplex system
Thia I» designed to
spread the load mor* e»enly over the
tab**. The first audio stage la reflex
In the second radio frequency stage.
while the s«*cund and Io stage Is In th*
first radio step
Thu» aa th* first
radio stag* handles th* llghtret radio
load, thia aame tub* la calle,! u|a«n to
amplify al audio frequencies th* final
output, which la by far th* greater
As th* earn* ayetem la used In both
amplifying tubes, th* load la about
•-qua) In both tube«, thus minimising
distortion
Indeed, th* ton* qualify
from th* receiver shown In the dia
gram la delightful
*
Th* best tube* to USS for thia cir
cuit ar* those requiring a six volt stor
age battery. They serve twat becaue*
of their greater ability io stand the
compound amplification du* to th«
larger elements.
Th* set la on* that cannot l>e ex-
ported to give perfect results Instantly.
No such expectation should be cher
ished regarding any home made reflex
Site of Panel.
It Is not a circuit for the novice t«»
b* too confident over, as some skill
In the placement of parts, avoiding of
stray fee«I back at radio and audio fre
quern-lee la necessary The set. how
ever, may lie well constructed on a
7 by IHInch panel, using a baseboard
about H's Inches deep
Th* set. ones In g-oul working or
der. will b* found on a par with the
standard neutrodyne where four tubes
are WnployetL Th* volume la great
and the aeleetlrlty sufficient to meet
th* n«-ede of the day.
Th* audio transformers preferred
for thia circuit ar* of the type entirely
Inclosed In a metal housing The vari
able condensers may be Instruments
you have around th* house now, the
colls being constructed ao that the
broadcast range will b* Covered
However. If It la deaired that the dial*
tune In atep then not only aiimild tn
strumenta of the aam* maximum ca
pacity b* wed. hut they should be
condensers mad* by tli* same manu
facturer. This n«-<-e«slty arises from
tli* fflrvrgenc* of actual I mltnum - i,
parity as among exmdensers of differ
ent manufacture
Every condenaer
rated at «sari mfd has not Juat that
maximum actually.
Hometlmea th*
variation la aa much aa 3» per cent
However, th* tw<st makes of con
denw-rs ar* on clos* to their rated
capacity that no regard need b* paid
to th* difference. If the earn* make la
uaed. so fhr aa coll winding la con
c*rned
Cenetructlen of Celia.
In constructing th* colls use filter
or han! rubber tubing, fiv» Inchea
diameter, 4 Inchea high, th* wire b*-
Ing No. 24 doublo silk covered
throughout Tb* colla ar* wound with
the primary at on* end. one half Inch
S*t>aratlon being left after th* primary
lo completed and th* secondary being
*<>un>! next
Tiny parallel holes ar*
drilled In th* tubing for threading th*
wlr* terminals and thus making t lie tn
secure
Enough exev-ss wire la left
at th* beginning and end of each wind
Ing tn utlllx* Il for actual connection
Inside tb* net. Instead of using bus bar
or other ouch connecting wlr* for tb*
purpose
About ail Inches of eteeea
will raffle*, What la not needed may
b* cut off I later when the connection»
are soldered
Th* primary of th* aerial It r
transformer, extreme left, has 30
turna. Th* secondary, shown next to
It. has 41 turns, untapped
The two
other primaries consist of 15 turns
«•ch. hence these Interstag« coupling
primaries are different from th* aerial
primary,
Alao, the secondaries ar*
different, tn that a tap la taken at the
fifteenth turn. A tiny loop n made
•nd then grasped between the thumb
an<l Index finger and twisted amund
rwlc*. Then th* Insulation la scraped
off th* tap. so that a wlrs may b*
■oidereff from th* tap to on* aid* of
the neulralixlng condenser N
Thus
each of these two colls Is wound with
primary first, then secondary, the tap
point being made IS turns from the
end of the primary Thor* ar* three
colls to be wound, namely, the aerial
Il F. transformer and the two inter
stage trsnshinnera
The variable condensers that tune
> the s«woridariee ar« <»«C> mfd repre
1 settled In th* diagram by Cl. <"2 and
<71. Thu» the set has three controls.
| If <*>ly two controls ar* desired, a
- '«•! double condenser, wber* each half
la .OHOfi mfd.. may h* u*rd. th* com
mon rotor connecting tn A min is and
the two stators connecting r*«(>e«-tlvelv
to the grid of the second It F. tube
(second from left), and th* coll aid*
of th* grid condenser, <’4. which Is
.00H35 mfd. It will be noted that this
force* an apparent negative grid re
turn in the detector at age. sin«* there
can be but one grid return at the ends
of th* two secondaries In fact, how
ever. the grid return la slightly |*>«l
tlv* In lh* detector stage, du* to th*
manner of connecting the two-megohm
grid leak, Ill (grid post of detector
tube socket to A minus)
If
mfd varlahl* condensers
are to be used ths colls would h* mads
as prescrltHwl. except that the second
aries would have fi7 turna of wire. In
stead of 45. In thia case th* tap would
be at the twentieth turn
The tap la mad* nonrcr what la
known a* the grid end
Proper Connset IS" or Colla,
Th* aerial It. F. T. u connected
with th* aerial Joined to the tiegtn-
nlng. I e, top of the primary winding,
when lite form Is so placed that th*
primary Is alwtve the secondary. The
end of th* primary goe-s Io ground
Now connect the beginning of the sec-
oOtiary, not to the fixed |>latea of Cl
and to grid, but to the negative A and
the rotor plates of Cl. Numerically,
as per diagram, connect 1 to aerial.
2 to ground. .1 to minus A and 4 to
grid. Thia la the Inverse method of
connection. th* orthodox observance
of imlaritles
With the rest of the
It. F. wiring, however, this system is
not followed. Th* first Interstage cou
pler (neutrofortner) shown to th* right
of th* first tube, la cotinect«-d with
the primary beginning (1) Joined Io
plat«, the end of the primary (2) going
to It plua amplifier voltage Her* the
beginning of the secondary (•). which
adjoins th* end of the primary, con-
necla the grid (Instead of, aa In th*
previous caa*. to low potential), and
th* end of the secondary to negative
A. Thus th* top. which la 15 turna
from th* beginning of th* secondary,
la nearer the terminal thereof (3)
which connects to grid
Th* method
Jus» described ls on* wherein the pri
mary «•«•nnectlons ar* reverse«l. that
la, the polarities oppose at th* adjoin
ing points (2 and 3). In ueutrodyne
construction thia la correct.
Tli* second Interstage coupler la con
nected In th* Min* manner aa th* pre
ceding one (that la, unlike th* arrial
coupler), except that (3) go«-a to on*
aid* of th* grid nortenvrr. Instead of
conductlvely to grid. Th* other aid*
of the grid condenser la Joined to th*
grid |“‘st of the detector tube socket
Four by pass condensers ar* used,
two of <»'l mfd. each, across the esc
ondaries of th* audio transformers
and two of <W2 mfd. from the end (B
plus amplifier lead) of th* two Inter
stage coupling primaries to negative
A, to by-pasa th* R F. current around
the batteries.
A separate rheostat. 112. actuates
the detector tub* am) Is of 30 ohm»
rwwlatanc* for the six-volt Storage-bet-
t*ry-oper»ted tubes 111 control» the
two amplifier tubes sod la 15 ohms
A battery switch, S. may be uacd to
turn th* set on and off aa a unit
Th* colls should be mounted at a
57.3 degree angle, The neutralising
condensers should ha adjusted until
ther* la no squealing
Bottle Coil
A coll wound on a round bottl* elim
inate« much high distributed capacity
found In "plckl« bottl*“ coll*
Th*
wire Is wound about th* bottle, on
which three strlf-a of pimmcl paper
ar* laid gummed aid* up. a* la th*
ens« In the "plckl* bottl*” cult
Although th* statement that th*
dairy cow Is th* most e-•
i cal pro
urer of human food of all the different
classes of live stock, la a fact. It doe*
not ho*d true for each Individual cow.
The on* moat Important factor In prof
Hable milk ar cream production is th*
ability of the Individual cow It dtw*
not matter what breed you own a
what family within the breed, there
ar* always certain Individuals that
are more e<-«>oomlcal producers thsn
others. According to the latest avail*
abls figures, th* average milk produc
tion for the dairy cows In th* failed
States Is 4.2W) pounds of milk, i-'lnta
out J I* IwMs»ter. chief of the dairy
division at ("lemso® college
Mouth t'aroUna has lust recently
started developing Hr dairy herds, and
although we have no available figures
on the actual production of all th*
cow a In the state. It Is very obvious
that the production Is much lower
tl.sn tils »'eras* f..r the Intel
Stats«. This means that If we are t I
mgke dairying a profitable farming
Operation, w* must not only get mor*
cows but we muaf es|ieelslty Improve
the average production of all of our
cows. The Individual farmer ran do
this tn three ways:
First, by keeping records on th*
cows he no* owns, and ibis does not
mean official records, but th* actual
weighing of the milk each produce*
at each mllktng Totaling thia record
each month and alao keeping a record
on th* f«ed each co* consumes In a
month, he can In a few months tell
which of hla cost are the best
The second way by which the farm
er can Improv* the producing ability
of his herd la by buying co«» which
have already made creditable records
proving that they do have thia ability
to make a profit on r«<-l constimeli
Thia Is a rather expensive «ay be-
cause the fanner who has made thia
record on the gooff row wants to keep
her and In order to buy her. It Is nec
essary to pay a premium. Also, In
buying cows, there are chances for
loss In bringing In diseases and other
troubles of which you have no knowl
edge when you make the purchase.
The third «ay la a combination of
the first and the use of a bred for pro
duction dairy sir* on the cows you
now own and «hl<h are selected from
your hen] as being the !>e*t. Judging
from the records they have made.
Dispose
of a cow in a day, but to
Produce
on« recuire» from 2* a to 3 year»?
Condentery, Scio, Oregon
All kind« of Iron and Uran» Castings
Fruit and Hop Furnaces
liepair Work and Blacksmithing
ALBANY IRON WORKS
Engines, Mill and Mining Machinery
Live Kolla. Head Block*. Log Turners. Log Hauls,
Cable Conveyors and Hope Feed Work.
Albany, Oregon
Phone 61
ALBANY ABSTRACT COMPANY
Abstracters of city and country property In Linn County. Work
quickly completed
Our certificates guarantee safety. Prices con
form to the established rales throughout tbs country.
LRILA MITCHELL. •««rotary
L. M. CURL. PreslSest. A Hersey and Maaager
Feed for Calves Where
Milk Is Not Available
Where milk Is not available for
calves, give the following - Take 50
part a finely ground com. 15 parts lln-
s«-rd oil meal. 15 parts finely ground
rolled oats, 10 ¡«arts dried blood flour,
10 parts skim milk powder, one half
l»art salt. Stir up with warm water at
th* rate of one pound of the meal mix
ture to about six pounds of water. In
crease gradually as th* whole milk Is
de reassd until at th* time th* calf la
5<> days old It should be getting only
th* gruel At this time one and »ne
half to two pounds of the meal mixed
with th* water will constltut* a day’s
feed Th* total quantity of milk uwd
la about .too |>ounds; If less la fed the
calves ar* likely lo be unthrifty.
Better Dairy Practices
to Increase Production
By Increasing th* average pn*duc-
tlon of hla cows about one fourth, and
at the asm* time reducing hla produc
tion costs one seventh. Arnold Grau*
of Jackson county. Minnesota, has In
creased the profit from hla cows shore
cost of feed and labor, mor* than 70
times
He Increased the production of hla
herd by culling out the poorer cows of
bls herd and replacing them with high
er producing heifer* of hla own breed
Ing. He cut down on his production
coats by Installing an engine to run hla
cream separator and by building a
milk ho us* claa* to th* barn, thus re
ducing th* labor of handling hla milk
Egg Shipping Business
Allied With Creamery
A good many of the eo-operatlv*
greamerlea ns well as the smaller pri
vat* creameries are planning on han
tiling the eggs of tbelr patrons Th*
reason for thia la the feeling that th*
egg shipping busloe«« la cloaely allied
With the ereamerv buSlnesa
Some of th* creameries which have
tried thia line of work ar* voting to
continue It during the coming year.
The reason which in advanced Is that
It Is unnecessary to set up two organl-
anthma to handle lw* products which
*r* an cloaely related and which may
be mor* economically handled by on*
•rgantMtloa.
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