Free trader-journal and Ottawa fair dealer. (Ottawa, Ill.) 1920-1927, 1922-10-23
RADIO
SIMPLE ANTENhAlS =.
BEST FOR AMATEUR
Straight, Single Wire Type,
Placed High, Is Preferable
for the Receiving Set.

VI nitcd States aAlt from observation
4 would appear thar there were al
most ne lnany dIrtronr STYLES Of an
.teenne 9l7Sctpd u, there were seIs
HThl~, too despite the fact
tltat thr couni. H'e hooeed win liter
0fbrc telling cgch' md every citizen
Low 10 buird HI. own set
These cage, fat.top, lhulti-wire UNI
hrella, etc,. kinds of aneGna were de-
signed primarily for their sending
characteristics. Remember that, in the
beginning of radio, the man who want
ed to hear wireless signals had 10
know quite bit about practical radio.
He had To- know the continental and
Morse codes, ana in addition Ia be n
FAIRLY decent SORT Of mechanic. He
was, in short, The radio amateur, who
wanted to send rs well aS receive"
Therefore all this early ileralurc was
for the man who wanted to send as
well rs receive.
Since rHdlophonr broadcasIing was
lilh started, there has grown up IN,
other army of radio enthusiasts.
greatly Communicating the pioneer anna
tcurS. who do not want to send ai all.
hlt who do wlslto rceeRc, Therefore
mhc'l Of his early literature does not
sbFy, ar more aor1"tly. MI Of 1t does
not Apply, to tie now generation.
In bIilding an aItoanA remember
that nothing is more satisfactory foI
Inc amateur tnan the straight, single
wire anlcnna. rs high in the mir MS il
eau be placed. and about $50 feet long
An nntcnna Of lhiS sort, Will give bet
Ter results. in most cases, than any
other sort 1t will take up less room,
,and Will not cut 50 heavily into the
owners finances.
The function Of the antcnna for n
receiving set is 10 absorb the maxi.
mum amount of energy radiated from
Il transulitcr. This means that it
must be- So built and placed rs 10 be
MS efficient NJ possible, The factors
governing the type Of aerial to be
erected are as follows:
AMOUNT OF spac" aNdliahi".
ne hihouht "I money Wiil'h is I"
be spent
The WaNeienstli range when Is II"
be rectlStd.
me distance from WiIlch Signals are
sent.
a. SAN aerial possesses h"ih distributed
capYclly ana induclanre Whlcl' com
blned give 1t IA defined period Of "Scil'
latton These oscillations VIII set up
= wave motion the length of which IS
rel;Hed I" the capacity ana lnd'lctan'e
by formula which can be closely ap-
proXimated by multiplying the length
Of W." antenha in feet plus tn" length
Of the lead-m in feet ~ IL, THIS
Evil give the fundamental wave length
Of the antcnna.
% 70 matter what Kind of antchAa IS
NSed II must always be remembered
that The lead,in should be as short and
as direct as possible IN other words,
don't use up any unnecessary energy
received IN fhc anlenla to force n
way through a long l"ad-ln +" the re-
"elvcr
If mnlti.Vire antenna IS used,
ihave the lead-jn consist Of rs many
wires rs are III the antehna, IheS"
wires should be wrapped together IT Il
point q few feet from IN" anlrnna and
""pS" 'Hl' ,''' '''''i'- SCI is u
"'"'' :, ''' : ,''> "',' i''t>s ''',""~' It
l"' N''N VI '''' ''''l''I''@' u N"'''i" w
'''1"''''' WIZ l'','' ''''''i wv W >''''"
To- aanat,I ~ ,.,nn ,ha ,,,.,,. .
-,
,,',,n. ,o,.,tana ,,.ira. ~ r. az
I 49,"
,nA ,aa, La III
, 49," ~, .,,..,ni ,,,,,. - 'n'. Wv ',''''''
any,. ar..,,n,, ,..,,,,,'., ' n'' ,,,,,I,, ,
- ,,,, ,'' ~, ,,,sn ~" '','' .' ~"
'.a ," ,a,. , ,.,',. '", ,''',,'',v'
=, Jna,4 rror,,,I. an, -,,.,,,,1 !, '" ,,.>',
!, =, .a.G. ,,,,a.., .,.,,,a,,,, IN
,ns ,ta a,,, ,a..i;u ,,,,,
!, .,.,oua', ,T,.;,,,,, a.,
H.. ,..,,, ,,,,,I .i, r. nl
I,r, tI,, ,..,,,,r, ro.;..,',,,. ,..,,
.,,,,,,.,., en-, .,n,n,r,l - r
,,,,,
70 m.,,., ,;,.,s .,ro ro. a,,;,ot,o .on
,,. c., ,.,.. 49, s,.
r
OF me iaeN'' c'ilchel wire III iio's'