Kanga Products URMSTON Instructions for use

GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%1%of%12%
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Construction*Instructions*

GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%2%of%12%
2/1$3!1/!1#$!45,67$.!
8#$+9!:$;/.$!</5!=/67$.>!
It%is%important%to%get%the%electronic%components%in%the%right%places%for%the%circuit%work%properly%and%changing%
them%after%you%have%soldered%them%can%be%difficult.%So,%check%and%double%check%that%you%have%the%right%part%
in%the%right%place%before%you%solder%it%in%place.%%
%
Once%each%part%is%soldered%in%place,%tick%off%the%check%box%so%you%do%not%forget%where%you%are%up%to.%
%
?66!+/@A/*$*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%with%the%(-)%on%the%circuit%board.%The%positive%lead%is%a%little%longer%too.%
C$B7A#/*$!=/+9$1!
Installing%the%headphone%socket%may%require%some%tape%to%hold%the%component%in%place%while%soldering.%Use%
the%tape%to%hold%the%socket%while%you%make%the%1st%solder%connection.%
(/1$*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*$6!
Remove%some%of%the%lacquer%below%the%Varicap%to%a%solder%joint%to%be%created%between%the%panel%
and%the%variable%capacitor.%Apply%some%solder%to%the%panel,%then%the%wire,%then%finally%the%Varicap.%
?*1$**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%the%pins%facing%outwards.%Use%some%tape%to%hold%the%connector%in%place%while%you%
make%the%first%solder%joint.%
%
%
% %

3%of%12%
(B.1!HI!CB.7JB.$!
Construction!
E./*1!(B*$6!! !
8/@A/*$*1!"B39!8/@A6$1$!
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q
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q!
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q
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q!
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q!
!q
!q
!q
!q
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"K2L%Fit%Varicap%to%panel%&%Install%knob%%
%
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)%q
(8:
(C5)%Tune%Connection% q
q
q
q
q
q
q
(See$Notes$to$the$builder)%
!
(I1)%Power%connection%
!
(See$Notes$to$the$builder)%
(I4)%Speaker%connection%
!
(See$Notes$to$the$builder)%
(A4)%Attenuation%%
(See$Notes$to$the$builder)%
!
(B1)%Fine%Tune%
(See$Notes$to$the$builder)%
!
(C1)%REGEN%
(See$Notes$to$the$builder)%
!
(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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GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%4%of%12%
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Construction!
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8/@A/*$*1!"B39!8/@A6$1$!
!(H2)%Fit%22Ω%%
(Coloured%Red,%Red,%Black,%Gold).%Solder%in%place% q!
!
(G1)%Fit%7808%Voltage%regulator.%Centre%pin%bent%back.%!
8#$+9!M.,$*1B1,/*I!Solder%in%place% q!
!
(E1)%Fit%Capacitor.%Marked%10uF.%Solder%in%place%
(See$Notes$to$the$builder)$Check$Orientation%q
!
(H1)%Fit%Capacitor.%Marked%100uF.%Solder%in%place%
(See$Notes$to$the$builder)$Check$Orientation%q!
!
(H1)%Fit%100nF%Capacitor.%Marked%104.%Solder%in%place.% q
!
(F1)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.% q!
!
(B1)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.% q!
!
(A0)%Antenna%Socket%
(See$Notes$to$the$builder)%q
!
(B4)%Coil%
q

GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%5%of%12%
(B.1!SI!(/J$.!=5AA6<!
Testing!
!
Your!circuit!should!now!look!like!this.!
!
!
!
Complete!the!following!tests!before!moving!onto!the!next!stage.!
!
!"$31!8/@A6$1$!
1* Check%over%your%soldering.%Make%sure%all%wires%are%trimmed,%
and%no%short%circuits%are%present.% q
2* Connect%a%9v%battery%to%the%battery%snap%and%connect%the%
battery%lead%to%the%POWER%Molex%connector%on%the%PCB%q!
3* Measure%between%pins%6%and%pin%4%of%IC%T%UV!that%you%have%9%
Volts% q!
4* Measure%across%C1.T:HV%Ensure%you%have%8%Volts% q!
5* Disconnect%the%battery.% q
!
F/-$!/*1/!(B.1!W!
%
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GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%6%of%12%
(B.1!WI!"#$!?57,/!?@A6,;,$.!
Construction!
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8/@A/*$*1!"B39!8/@A6$1$!
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(G4)%%Fit%8%pin%IC%Socket%!8#$+9!M.,$*1B1,/*I%
q
!
(G4)%LM386%-%!8#$+9!M.,$*1B1,/*I!
you%may%need%to%squeeze%the%pins%in%gently%so%they%fit%
the%socket%
q!
!
(H4)%%Fit%10Ω%Resistor%%
(Coloured%brown,%black,%black,%Gold).%Solder%in%place% q!
!
(G3)%Fit%Capacitor.%Marked%10uF.%Solder%in%place%
(See$Notes$to$the$builder)$Check$Orientation%q
!
(H4)%Fit%Capacitor.%Marked%100uF.%Solder%in%place%
(See$Notes$to$the$builder)$Check$Orientation%q!
!
(F2)%Fit%Capacitor.%Marked%10uF.%Solder%in%place%
(See$Notes$to$the$builder)$Check$Orientation%q
!
(H2)%Fit%Capacitor.%Marked%100uF.%Solder%in%place%
(See$Notes$to$the$builder)$Check$Orientation%q
!
(F3)%Fit%100nF%Capacitor.%Marked%104.%Solder%in%place.%
q
!
(G4)%Fit%100nF%Capacitor.%Marked%104.%Solder%in%place.% q!
!
(F4)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.%
q!
!
(I3)%Headphone%Socket%
q

GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%7%of%12%
(B.1!WI!"#$!?57,/!?@A6,;,$.!
Testing!
!
Your!circuit!should!now!look!like!this.!
!
!
Complete!the!following!tests!before!moving!onto!the!next!stage.!
!
!"$31!8/@A6$1$!
1* Check%over%your%soldering.%Make%sure%all%wires%are%trimmed,%
and%no%short%circuits%are%present.% q
2* Connect%a%9v%battery%to%the%battery%snap%and%connect%the%
battery%lead%to%the%POWER%Molex%connector%on%the%PCB%q!
3* Connect%either%headphones%or%a%speaker%to%the%PCB% q!
4* With%a%screwdriver%touch%the%middle%pin%of%the%Molex%
connector%marked%“VOL”%(F5)%Ensure%you%can%hear%a%buzz% q!
5* Connect%VOL%connector%from%front%panel%and%again%touch%
middle%pin.%q
6* Ensure%the%volume%control%makes%buzz%louder%&%quieter% q
7* Disconnect%battery.% q!
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F/-$!/*1/!(B.1!U!
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GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%8%of%12%
(B.1!UI!"#$!X$@/756B1/.!Y!M3+,66B1/.!
Construction!
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!!
8/@A/*$*1!"B39!8/@A6$1$!
!
(D1)%Fit%15KΩ%
(Coloured%Brown,%Green,%Orange,%Gold).%Solder%in%place% q!
!(D4)%Fit%3.3KΩ%
(Coloured%Orange,%Orange,%Red,%Gold).%Solder%in%place% q!
!(C4)%Fit%47KΩ%Resistor%%
(Coloured%Yellow,%Violet,%Orange,%Gold).%Solder%in%place% q
!(A2)%Fit%1MΩ%
(Coloured%Brown,%Black,%Green,%Gold).%Solder%in%place% q!
!(C2)%Fit%10KΩ%
(Coloured%Brown,%Black,%Orange,%Gold).%Solder%in%place% q!
!(C3)%Fit%22kΩ%
(Coloured%Red,%Red,%Orange,%Gold).%Solder%in%place% q
!(D2)%Fit%270Ω%
(Coloured%Red,%Violet,%Brown,%Gold).%Solder%in%place% q
!
(A3)%Fit%IN4001%8#$+9!M.,$*1B1,/*I%Solder%in%place% q
!
(D3)%Fit%2N3904%Centre%pin%bent%back.%!!
8#$+9!M.,$*1B1,/*I!Solder%in%place% q
!
(B3)%Fit%10pF%Capacitor.%Marked%10%or%10p.%%
Solder%in%place.%q
!
(B2)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.!q
!
(A2)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.!q
!
(C3)%Fit%33pF%Capacitor%Marked%33.%Solder%in%place.% q
!
(C3)%Fit%330pF%Capacitor.%Marked%331.%Solder%in%place.% q
!
(C4)%Fit%330pF%Capacitor.%Marked%331.%Solder%in%place.% q
!
(E3)%Fit%100nF%Capacitor.%Marked%104.%Solder%in%place.% q
"#$!X$@/756B1/.
!
(E3)%Fit%2N3819%Centre%pin%bent%back.%!!
8#$+9!M.,$*1B1,/*I!Solder%in%place% q
!(E2)%Fit%4.7KΩ%%
(Coloured%Yellow,%Violet,%Red,%Gold).%Solder%in%place% q
!
(E4)%Fit%27KΩ%
(Coloured%Red,%Violet,%Orange,%Gold).%Solder%in%place% q
!
(F4)%Fit%10nF%Capacitor.%Marked%103.%Solder%in%place.% q

GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%9%of%12%
(B.1!UI!"#$!X$@/756B1/.!Y!M3+,66B1/.!
Testing!
!
Your!circuit!should!now!look!like!this.!
!
!
%
There%are%no%further%tests,%just%follow%the%next%instructions%and%you%are%ready%to%test%
the%completed%radio%
!
!"B39!8/@A6$1$!
1* Connect%Front%panel%and%screw%in%place%using%the%modesty%
blocks,%Nuts,%washers%and%bolts% q
2*
Connect%all%the%potentiometer%cables%to%the%circuit%board%and%
double%check%you%have%the%right%lead%going%to%the%right%Molex%
plug/socket%
q!
3* Connect%either%a%speaker%or%headphones% q!
4* Connect%a%wire%antenna%(60cms%of%wire%will%work)% q
5* Connect%a%9v%battery%to%the%battery%snap%and%connect%the%
battery%lead%to%the%POWER%Molex%connector%on%the%PCB%q!
6*
Use%the%TUNE%/%FINE%to%adjust%the%frequency%of%the%radio.%and%
adjust%the%REGEN%control%to%bring%the%set%into%oscillation%when%
listening%to%SSB/CW.%
q
7**
Set%the%TUNE%control%to%half%way,%using%a%receiver%set%to%7Mhz%
adjust%the%coil%until%you%can%hear%the%oscillator%running%on%the%
receiver%
q
!
!
! !

GQRP%/%Kanga%Regen%construction%manual%V1.11% % Page%10%of%12%
?+9*/J6$7)$@$*13!B*7!E5.1#$.!O*;/.@B1,/*!
?4/51!1#,3!9,1!
%
This%kit%was%designed%by%George%Dobbs,%G3RJV.%The%PCB%designed%by%Paul%Darlington%M0XPD.%For%a%
full%description%of%the%circuit,%see%Practical%Wireless,%April%2015.%
%
This%instruction%booklet%was%prepared%by%Dan%Trudgian,%M0TGN.%
%
Test%builds%using%these%instructions%were%carried%out%by%Steve%Hartley,%Tony%Fishpool%&%Dan%Trudgian.%
A%video%of%the%test%build%construction%can%be%viewed%on%YouTube%here%:%
https://www.youtube.com/watch?v=LZuM3KOGkgg%
%
K3$;56!6,*93!
• GQRP%club% % http://www.gqrp.com/%%
• Kanga%Products% http://www.kanga-products.co.uk%
%
:5,67B1#/*3!
This%kit%is%just%one%of%many%kits%that%the%Bath%Buildathon%Crew%have%introduced%to%new%radio%amateurs,%
shortwave%listeners%and%people%with%a%general%interest%in%electronics.%%The%Bath%Crew%run%a%Buildathon%
in% January% of% each% year% to% help% students% on% Intermediate% training% courses% in% Bath.% However,% the%
buildathons%are%also%open%to%anyone%who%would%like%to%build%a%fun%radio%project.%%
%
For%further%information%on%up%and%coming%buildathons,%projects%and%training%for%amateur%radio%both%
in%class%and%via%distance%learning,%please%email%Steve%[email protected]%%
%
!
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