SS-158-EDX-EU-V2 Mod Manual Revised 3.0  29-6-2018

SS-158-EDX-EU-V2 Mod Manual Revised 3.0 29-6-2018

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Publié le 01 juillet 2018
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R P C omms & Des ig n UK © R ang er S S -158E DX -E U-V 2 Mod kit © Internal T echnical V ersion Only-Not F or P ublic R ele ase
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Date: 29-06-2018 R ev is ion 3.0 R P C omms & Design UK © November 2017 R evision 2.0 Dis c laimer-It is assumed your have the technical ability & tec hnical skills, correct calibrated T est\R F equipment and tools to carry out these modification and comply with all legal radio bodies and local laws enforced in y our country of operation. R P C omms & Design UK will not be held responsible for any legal losses, life, equipment property or any other responsibilities in information provided to end user, use of information is for educational purposes, please seek legal and technical advice is subject to commercial and manufacturing uses. T he end user of this information is solely responsible for his or her actions in use of this material and to ensure he\she abide by any R adio local or country laws and any other legal duties enforced in your country of operation. All information presented is the sole property of R P C omms & Design UK and shall not be copied, altered in whole or part, without permis sion. Any other parties’information mentioned in this ma nual shall be credited and abide by any or copyrights enforced. P leas e c ontac trpc omms @ g mail.c omA ny w eb-links s upplied on this doc ument c opyrig hts w ill apply to res pec tiv e ow ners and us ed in g ood faith.
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Introduc tion T his Document written will help improve some of the shortcomings of the R anger R C I S S -158-E DX 12-10m band Multi-mode transc eiver, especially for use in UK and E U states where narrow fm is used more wildly. All mode 20dB R oofing F ilter to help resolve QR M\No ise F loor. F M A udio C lipper corrected waveform and helps impro ve audio punch on narrow F M mode F M receiver demodulator AF gain recovery increased for Narrow fm (based of E T S I\E N 9khz B\W 2.00khz deviation 100% max 60% dev= 1.2khz specs) Increased volume gain on lower fm narrow deviation levels at 60% level at 1.2K hz deviation suitable for Multi-Norm E uropean N arrow F M mode. LT 455G W -9.0K hz filter 455khz to widen F M bandwidth on receiver side. F m R eceiver audio quieting improved. G ain In\Out from E cho board equalised and improved. F requency stability Improved frequency drift and improved thermal prope rties to frequency critical parts. V C O whine Improved DC regulator and DC ripple capacitors. T w in F an extrac tors -added Hig h P ow er 25Watts F M mode added E xpanded upper frequenc y c ov erag e 30.105mhz-added Improv ed A lig nment of radio s uited for E U\UK market s \operation. T he following web links will provide handy referenc e guides to the radio. And credit goes to R ick of E uro R adios for his re-mastered drawings and schematic diagrams. P lease consider donating to this fab site to help s upport it. www.cbtricks.com
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INDE X S erv ic e Manual http://w w w .c btric ks .c om/radios /rc i/s s _ 158edx/g raphi c s /s s _ 158edx_ s m.pdfS c hematic s (Mos fet lates t) http://w w w .c btric ks .c om/radios /rc i/s s _ 158edx/g raphi c s /s s _ 158edx_ mos fet_ s c h.pd fP C B L ayout (Mos fet lates t) http://w w w .c btric ks .c om/radios /rc i/s s _ 158edx/g raphi c s /s s _ 158edx_ main_ pc b_ lay out_ top_ mos fet.pdf
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P arts to C hang es R emove parts and s ubs titute w ith new v alues as lis t ed. A ll modific ations have been v erified as g ood. th A L L R es is tors are 1/16 of a WA T T DC R eg ulation and R ipple C aps MG 941118 Amp 300W P NP R S 737-8868 1off Loc Q5-Up rated part BZ X 79 7V 5 Diode R S 544-3632 1off Loc D73-Up rated part 4700uF E lectro C ap R S 763-9431 1off Loc C 248-DC ripple 1000uF 25V DC E lectro R S 763-9428 1off Loc C 243-DC ripple 1000uF 25V DC E lectro R S 763-9428 1off Loc C 152-DC ripple S S B C arrier L eakag e reduc tion 220pF (221) 50V C apacitor Disc C eramic 1off Loc C 216-S S B C arrier Add P C B grounding links see pictures R oof F ilter 2K 7 R esistor R S 707-7704 1off Loc- LHS of 10M15 A filter 10.695Mhz 15khz Band W idth R oof F ilter 1off Loc I nsert C 62 place Quartz lab R oofing filter mount brass or tinned sheet 1mm Loc see picture 1A T one E nable-C 41 E nable tone to roll of high frequency audio for softer sound from radios speaker.
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Bridge S older jumper nearJ 4 topside of P C B F m T X /R x Narrow F M E T S I\E N s pec s LT 455G W 1off Loc-F L1-9.0khz bandwidth-T echno F ix UK 18K R esistor 1off Loc- R 59-F M R X De-mod G ain 47K R esistor 1off Loc- L 4 P in 1 and 3 Quieting 0R W ire Link R esistor 1off Loc- R 168-T X AF C lipper gain 1uF E lectro P olarised C apacitor 1 off Loc- C 148-T X AF Bass response less 1nF (102) C apacitor Disc C eramic 1 off Loc-C 155-T x HF roll off 10K R esistor 1off Loc- R 127 balance AF C lipper W aveform shape V C O T X F M Modulation Improv ements 100pF (101) C apacitor Disc C eramic 1off Loc-C 100 decoupling roll-off 220K R esistor 1off Loc- R 126-T X audio gain V C O 10K R esistor 1off Loc- R 124 AF G ain V C O 1M0 resistor 1off Loc- IC 3 P in 7/ground-stops V C O whine Armour W ax E bay 1off Loc V C O\Mixer  P LL Offsets 10.950mhz Offsets Oscillator. 5khz +/- S hift c ontrol-Inc reas e rang e 100K R esistor 1off Loc- R 153 Increase 5khz shift
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E c ho B oard-Improv ed T X audio E qualis ed G ain in\out 10K R esistor 1off Loc- R 1 echo board 1K 2 R esistor 1off Loc-R 26 echo board 1nF (102) C apacitor Disc C eramic 1off Loc-C 4 echo board 100nF (104) C apacitor Disc C eramic 1off Loc- C 22, C 3 echo board Mis c
Heat-sink compound T -220 Heat sink and mounting kit R eplacement T ransistor Q51 ref
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2S C 2314 - F (2S C 2028/2S C 1957) E L E F L OW R F T R A NS IS T OR .
Modific ations - Out the box F ac tory F res h units Before commencing please check that radio function correctly and no apparent factory faults present. F unction switches work (band-move internal link to test) R F power OK R X sensitivity in all modes meets specs. C heck T X S S B that no carrier leakage. E nsure voice T ransmits and R X receives OK C heck all knobs and switches function and no shafts bent on knobs and channel selector\mode\band switch. T hes e tes t ens ure no fac tory faults before breaking s eals and any warranty! I would hig hly rec ommend tes ting eac h radio before hand to ens ure no problems or faults exis ts prior to modifying from bitter exp erienc e! E nable full band for testing purposes S ee videohttps://www.youtube.com/watch? v=V ye4meN9J Y 4R ef levels R F signal generator levels quoted in mic rovolts P d F M T X 4W atts Dev 2.00khz max with 1khz test tone 50 mV R MS (15khz LP F ) 26.955Mhz or 2.2khz dev iation if L T 455G W filter fitted. F M T X speech should not exceed 2.5khz Am T X 4W atts C arrier 90% Mod max with 1khz test tone 50mV R MS (15khz LP F ) 26.955Mhz S S B T X 20-22Watts max with 1khz test tone 50mV R MS (15khz LP F ) 26.955Mhz S peech will be around 10-15W atts C arrier F M Modulation 1.2khz=60% Distortion 5% or less (6K hz B\W idth filters E T S I\E N specs) Am 30% Modulation 1khz test tone distortion 5% or less S -9=50uV P d on 26.955Mhz
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DC R eg ulation and R ipple C aps R emove old parts and refit new values in place, mark capacitors with red nail polish to indicate fitted. P ress capacitors hard into P C B to prevent wobble. S emelab MG 9411 P NP T rans is tor, 18 A , 230 V , 3-P in T O-3P
R S 737-8868
L oc Q5-Up rated part
1off
R emove Q5 from P C B C lean heat sink compound from Q5 P rep transistor Q5 with new heat sink compound C heck ceramic pad is not cracked when reinserting Q 5 (If c rac ked, only replac e w ith c eramic type no othe r material types !!! ) F it new part MG 9411 to Q5 position and solder in. Add red nail polish to lock tight screw.
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B Z X 79 7V 5 Diode
 R S 544-3632
4700uF 25V DC E lec tro C ap R S 763-9431
1off
1off
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L oc D73-8V reg ulation
L oc C 248-DC ripple
C 243-Up-rated P art 1000uF 25V E lectro P olarised C apacitor
1000uF 25V DC E lectro C ap R S 763-9428
1off
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Loc C 1 52-DC ripple