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2/1$3!1/!1#$!45,67$.!
8#$+9!:$;/.$!</5!=/67$.>!
It%is%important%to%g et%the%electronic%component s%in%the%rig ht%places%for%the%circuit%work%properly%and%chang ing%
them%after%you%have%soldered%them%can%be%difficult.%So,%check%and%double%check%that%you%have%the%right%part%
in%the%right%place%before%you%solder%it%in%place.%%
%
Once%each%part%is%soldered %in%place,%tick%off%the%check%box%so%you%do%not%forget%where%you%are%up%to .%
%
?66!+/@A/*$*13%%
Each%component%is%given%a%grid%reference%in%red%(e.g.)%(F2)%Use%this%reference%with%the%silk%screen%map%included%
in%these%instructions%to%correctly%locate%the%component%placement,%double%check% component%alignment.%
8BAB+,1/.3!
Pay%close%attention%when% fitting%the% capacitors.%Electrolytic%capacitors%(larger%cylindrical%bodies)%need% to%be%
installed% the% correct% way% around.% Each% Electrolytic% capacitor% has% a% white% stripe% down% one% side.% This% is% the%
negative%and%needs%to%be%aligned%w ith%the%(-) %on%the%circuit%boar d.%The%positive%lead%is%a%little%longer%too.%
C$B7A#/*$!=/+9$1!
Installin g%the%headphone%soc ket%may%require%some%tape%to%hold%the%component%in%place%while%soldering.%Use%
the%tape%to%hold%the%socket%while%you%make%the%1st%solder%connectio n.%
(/1$*1,/@$1$.3!!
Wire%each%potentiometer%in%the%same%way%as%shown%in%the%diagram.%LIN%pots%are%marked%with%a%“B”%and%Log%
pots%are %marked%with%an%“A”%
%
!
DB.,B46$!8BAB+,1/.!!
Attach%the%varicap%with%pins%pointing%down.%Solder%the%centre%pin%to%the%front%panel%and%solder%the%
black%wire%the%same%location.%use%the%pin%closest%to%the%Volume%control-%Solder%the%white%cable%to%
this%point.%
!
E./*1!(B*$6!
Remove%some%of%the%lacquer% b elo w%the%Varicap %to%a%solder% join t%to%be%created% b etw ee n%the%panel%
and%the%variable%capacitor.%Apply%some%solder%to%the%panel,%then%the%wire,%then%finally%the%Varicap.%
?*1$**B!3/+9$1!
Solder%both%the%top%&%bottom%of%the%Antenna%Socket%to%achieve%greater%mechanical%stability.%
F/6$G!
Install%all%connectors%with% th e %pins% fa c in g%outwards. %Use%some% tap e%to%hold %the%conn ec tor%in%place%while%yo u %
make%the%first%solder%joint.%
%
%
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(B.1!HI!CB.7JB.$!
Construction
E./*1!(B*$6!! !
8/@A/*$*1! "B39! 8/@A6$1$!
"K2L%Fit%Varicap%to%panel%&%Install%knob%%
%
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DMN!Fit%10k%LOG%(A)%Pot%to%panel%&%Install%knob%
%
!
'L%L2!Fit%10k%LIN%(B)%Pot%to%panel%&%Install%knob%
%
!
EO2L!"K2L!Fit%100k%LIN%(B)%Pot%to%panel%&%Install%knob%
%
!
?""L2!Fit%10k%LOG%(A)%Pot%to%panel%&%Install%knob%
%
!
Cut%Red,%Blue%&%Green%wire%to%approx.%P+@3%and%solder%
to%DMN%pot%(See$Notes$to$the$builder)%
!
Cut%black%&%white%wire%to%approx.%P+@3%and%solder%to%
!
Varicap%(See$Notes$to$the$builder)%
Cut%Red,%Blue%&%Green%%wire%to%approx.%Q+@3%and%solder%
to%EO2L!pot%(See$Notes$to$the$builder)!
!
Cut%%Red,%Blue%&%Green%%wire%to%approx.%HR+@3%and%
solder%to%'L%L2%pot%(See$Notes$to$the$builder)!
!
Cut%%Red,%Blue%&%Green%%wire%to%approx.%P+@3%and%solder%
to%?""L2%pot%(See$Notes$to$the$builder)%
!
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(C5)%Tune%Connection%
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(See$Notes$to$the$builder)%
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(I1)%Power%connection%
(See$Notes$to$the$builder)%
(I4)%Speaker%connection%
(See$Notes$to$the$builder)%
(A4)%Attenuation%%
(See$Notes$to$the$builder)%
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(B1)%Fine%Tune%
(See$Notes$to$the$builder)%
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(C1)%REGEN%
(See$Notes$to$the$builder)%
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(F5)%Volume%connection%
(See$Notes$to$the$builder)%
!
(A5)%&%(H5)%Install%with%the%flat%surface%facing%forward%to%
allow%the%attachment%of%the%front%panel.%Don’t%attach%
panel%yet%
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(B.1!SI!(/J$.!=5AA6<!
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(H2)%Fit%22Ω%%
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(Coloured%
(G1)%Fit%7808%Voltage%regulator.%Centre%pin%bent%back.%!
8#$+9!M.,$*1B1,/*I!Solder%in%place%
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(E1)%Fit%Capacitor.%Marked%10uF.%Solder%in%place%
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(See$Notes$to$the$builder)$Check$Orientation%
(H1)%Fit%Capacitor.%Marked%100uF.%Solder%in%place%
!
(See$Notes$to$the$builder)$Check$Orientation%
(H1)%Fit%100nF%Capacitor.%Marked%104.%Solder%in%place.%
!
(F1)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.%
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(B1)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.%
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(A0)%Antenna%Socket%
(See$Notes$to$the$builder)%
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(B4)%Coil%
Construction
Red,%Red,%Black,%Gold
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