Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1922-06-18
EFFICIENT TUNING IS
HALF OF FANS WORK
Clear Reception Depends on
Radio Mans knowledge
of His Outfit.
Wan, IMPORTANT rps GIVEN
Operation OF Every Typc az Tuning
Device itnSrd on Fundamentals
Which E'rr> onc May Grasp.
Eliminate Masses by SKILL


wth ,.,.,, ,,
800. ot inc
80, H'i"ch'!
| Mir ,b,,,,,.n H.. .ai,s,., t"nS,
- - W. '''Iis'"ieh, OF the
I correspond to th.t Of m, dis,,r,
broadcast 81 other transmi,tcr. the
/ radio enthusiast is ready to proceed
Wit" 'car"uE ,nc less obvious e,c-
mvuiS 'i The tuning process
\ Chang" ~ wIvciensth ar more
huui" approximation 90 ;hr desired
WAY" w't hc mad" ~ changing the
".'-ir.,l' i"ncth ~ the aerial This
Is tone IN ia" case ~ tie Naricoupl"r
"N -hanEi1& th' number 81 turns on
.u' t'' mary "r The '"'i with series
"i "p' HhH adjusting i finely with
in iA'> eIr'Hii.
Ih-r" "'' two somewhat dincrcn;
WAY connecting NJ the tuning
"'N'.'r NHi'h are ~ common u.s.
'"!"h mes" are known as the sim
-t'-' .F'N'i iun"r and me two-circuit
ur'r ~ IN" operation % receiver
based "n either one Of these tuning
stem : SAJnS'mtni %; the tuner part
"' nan ga" problem
iN "Hhll'h 10 tn" tuning system
) tnr dr'ertor' which is con
"''''H 10 the tuning part and which
Nhhhste ne received hish-frequcncy
anrreo; int" on with a form which
""' oP-E"lt telephone receivers-as
ne 's"-'reGiency curren; itself
N"""'''
Two Kinds OF Dctector..
Tr..r. AR. ,vo LI,Js a.. ,o,.
ea,rnaon Ms, ,ha rrys,sl ~, 49,, -,
aat.c,sr and ,lr vacul,,, ,n,o -
,gr :, ,bsi fn.- 49, 80 .-,'
mental rnubtr,,ior, a.,
s.,-ars, ~. sin,,I. cir.,,i, ,.
;,u. ,.s,.J ,bs tw,,.,i-c,,i, ,.,,'i
avn. ,h.rJ no sireie.frc,,;,
,4Ue type ana. last, the two. cirrmii
Vacuum, ;yb. .y,a e' I"''
The singh. cIr,ui, r-v.,,, o,,
: ~ ,ours.. M. simni.s, - onaro,n
In mis- there are nrlv III. ,v.,i,,
control and tho r-ys-,, Tbe rro,a
procedure in tuning this tyno
sa- tho detertp- in ,on;,r, ana .ro,.i,.
vary III. tuning control un.n dss;ral
signals arc heard mar ,1;ns,
ANA dotector ron,art Ia m,yi,nr,,
syr,. VIII
m. most a!rtcul, mart o. ,n,s nro
cess ! that IL no signals ar. heard
at first II is inposs,hl. 10 raj,
whether the deiec,or is in reccp,iye
condition or not. II il noseih,a a,a
very desirable TO conncc; nm . sonr'
non Lu,,., r,,.h n,i,,o wy "o"'
gle dry-cell battery. so as IN ,ns,
the d-iector ana Sc, ii, in SENSITIVE
condition WAYS OF doing his ,-n
shown !n mos, radio ,eSthooks
Also q Very often happens in ,
house equipped with electric nch,s
The switching on or off Of a lamn
mates enough electrical disturbance
-. hear on the radio receiver az n
sharp ciick. This click is not heard
= tn G.tsCtor is not in sensitiy. adj
-ustncrt. sosthat the datec,or can he
adjusted while some switch is beinp
turned on and or until tn. clicks ave
heard most loudly.
nov. just Il word about the oncra-
lion o: detector vacuum tubes. As
sum!ng that The proper accessories
are used and are properly connected
nap. the adjustment OF the tube ;o son.
s.tiv- condition is done on mos, soto
entirely by the Nla,uent rh.os,,,
which controls the current through
IN" filamcnt and therefore it's tom.
pcyatErc
Usually the tube viii orerat. IN
some degree II Ia. fllament ternv.,a-
tur. i anywhere near right. b,,, los,
signals viii be obtained o,jy ~.
il e exactly right. which is accom-.
plishcd after signals have been picE,o
UP.
Tn. Hiament must not h. h1Irned
brighter than necessary. If i, is i,s
life Viii be greatly shortened me
correct brilliancv is one no, mite al
~ ISL de the ordinary inca nuSSC.nt