T H-4 m 4M CW v Offd b 4-S QRP Gu N: 2M v w T H-4 Tv KSWL v 8 Ob 28
u: u v: 7 73 MHz Tu: Hz /2 Hz Tm w uu: W m Rv u dw: x 6 ma Sz: 43 x 39 x 7, w 8 z u-d k- w O--f CW d, mb md A/B b, 8-3 wm Adjum: BO m, -m u Cb u du: Aud M SMT P 2: P-d D: Rv: T v dd fm KSWL SW+ S w m mdf T f-d u w vd w-vd 7 MHz fm T uu f mx U fmd 22 m vu b L3/C8 T fw f -3dB bdwd f xm 4 Hz L4 d C2 md bk u 2 d mx U2 Tmm C3 vd djum f BO fu du m T w -m fw vd xm 6 db f ud T f ud fud bd f d 8 Hz w Q f 2 T v uu ub f d u A 8 Hz d jd f Tm: T m mb Sv Wb KDJV- f wk T fu u f b m d v Adfu S3 bd T bd uu 3V - u wv T CLK bd ud du Tm d fu T QSK fu CLK m bk-wv bw d m U7 m d f u dv PA dv Q-Q7 T w- f d bd d md f m d w mzd u ELSE md T dd f C2- w L7 vd du 2 d -m CC-m v Wv-: Q4 P- MOSET d f 2A uu du -w k- d ud w Q3, du u ud C C4 v mk u v d f R m 2 ms d f m 4 ms N: R7, R8 d R2 u, u PA d u b fm O du w-u MPU C: T C 28- DP- Am ATm328P ud Adu UNO x 6 MHz Y6 f m T fmw w w Adu vm m A -bd d uu 24 u--vu vd u fu T vb DC v vdd b Sd R6 d b A/D v d d f M d m A f u ud f d/d dd, d S-k md vb T md f /O vd vu d d f v f mw: T H fmw w w Adu m C u d ud b w m Af w-u z, m m u f -d, w k d ubu u Ed A dd b bf u u T u f f w u u d d B dm u/dw u d Ouu A4 d A vd k d d S3 bd Du Rv, CLK v, d uu u fu u Du Tm, CLK v d fu T v f w, u umb f d b b S3 f w b T vd v k w bk d f bw d m, ms m k-u T H fmw -u d b dwdd fm ://4u//HK S f T H-4 Tv KSWL v 8 Ob 28 2
P : Q Rf d D N/ mk 2 C6, C CG 2 C4, C4 22 CG 4 C,C8,C2,C6 47 CG C3 2-6 m bw C7 68 CG C3,C7,C9,C,C2 CG C CG C2 33 CG 4 C2,C22,C24,C49,C 47 CG 2 C26,C 82 CG C27 22 22 CG C4,C,C3,C4,C3,C37,C38,C39 u C47, C4 C8 33 u C9,C2,C23,C2,C28,C32,C33, u C34,C3,C36,C42,C44,C4,C46 C48 3 C29,C3, C43 u A ±% ¼ w 2 R3, R23 47 m Yw-v-d-d 2 R4, R 47 m Yw-v-bw-d R22 K m Bw-bk-d-d 2 R, R6 K m, PCB mu 8 R2, R3, R, R7-R2 K m Bw-bk--d 2 R8, R9 22K m Rd-d--d 2 R4, R K m Bw--w-d R K m G-bw-w-d 3 R6, R7, R2 M m Bw-bk--d CAL 2- m d, CAL 2- fm jum D N88 dd Bk 4 D2, D3, D4, D N448 dd G, m 2 D6, D7 BAT8 dd D8 N476 dd G, J BNC jk, - mu J2 DC w jk 2 J3, J4 K d ud jk, 3mm 3-d -- J 6- m d ud k -- J6 4- m d ud k T H-4 Tv KSWL v 8 Ob 28 3
L H R k Bw-bk-bk-d L2 68 H R k Bu--d-d 2 L3, L4 8 H R k Bw--bk-d L T37-43 d S u 7 u 2 L6, L7 T37-2 d S u 7 u Q, Q3, Q, Q6, Q7 BS7 MOSET Q2 J3 JET Q4 NTD29 Sm k b 2 U, U2 SA62AD 8- SOC-8 C -d U3 NE32 8- DP C U4 LM78M Sm k b U ATm328P 28- DP C U6 LM78L U7 74AC8 4- DP C Mu: -- S3 bd Sud w 8- d S u 3 SW ubu w 2 -- /6 Ud w ubu w SW2 d w/ w X-X 8 MHz HC-49/US Md X6 6 MHz HC-49/US -- #24 m w 3 7 m -- #22 m w 8 2 m 3 -- Kb 4 -- ¼ #6 udd 4 -- /8 #6, dd 4 -- #6-32 x 3/8 m w, d 4 -- #6-32 x ⅝ m w, d -- 8- DP k -- 4- DP k -- 28- DP k Amb- : A umb f m -v: mdu dv d dd d C d! u, d d vu w +3 d M f m, u, u -w u ~$3-4 fm DK Lkw, djum m C3 w A k $2 du ju wdv Amb u: Yu fd 7 ud mb u Yu d v fw m Cu: T m w d m T T H-4 Tv KSWL v 8 Ob 28 4
dd D7, w *ud* S3 bd bf u dd S3 bd m u -bd d u d umb PC bd uf BEORE YOU START Bf d w bud H 4, k m m z d fmz uf w vdd d k m P L Bud v k mmdd mmz b T v dm, mmdd C b mvd fm - k u u d m f m u k, d m H k d 4SQRPm H w m vd m fu u d u bf b T ud: *Sd 2 3W, fb m d * 6/4 d *D u *Nd- * f m bd * bd d P wdv Sm d Cm Pm dm vdd f dum k mmdd f f du u A u bud, u k ff u u m m d W u k u d, u k vf f v b d S ff u d fm d f w m bd T bd d w V-v bk f d O d, d u d f bk u m u d m b fud ud mb u L d! O Su: S f Gu u bw d u f v d 4SQRPu d j O vd, fd HK ubu d f u T u -m f d u m d f P J d J6 d vdd k- S f ubu f m fm T H-4 Tv KSWL v 8 Ob 28
T H-4 Tv KSWL v 8 Ob 28 6 GROUP ASSEMBLY: T bd 4 d R b d d udd f bd u u d 3 4 m, d d ff x d L d bw
T H-4 Tv KSWL v 8 Ob 28 7 GROUP 2 ASSEMBLY: T bd 3 d R b d d udd f bd u u d 3 4 m, d d ff x d L d bw T T
T H-4 Tv KSWL v 8 Ob 28 8 GROUP 3 ASSEMBLY: m d bw Sm v b, w m ud fuu T dd mb u fw u A d dv fud v udd k DC w J2 U ¼- wd bd d m Sd d f bd bk v d k u d u bd R f dd O m OK, d m d J2 T T
w dd D N88 d b dd D6 d D7 BAT8 B u m bdd d f dd w u D7 mu b d bf S3 bd d C43 T v w bd f f bd T d w d U4 78M T v -k b f f bd ud C4 d C4 mkd 22 22J d X6 6 MHz u w f ud d bv bd O f d dd, mvd R8 K m, bw-bk--d P S3 bd Cu ff 8- d ud w S3 d m 7- bd Sv u-ff Mk u ud f d udd f S3 bd Sd ju d Ck u wk u d fm d u d m bd O OK, d m R4 d R 47 m, wv-bw-d S3 m u bd P u-ff d ud d f S3 bd u bd v T dw S3 bd d d u bd v d d f 7- m bd A bf, k u wk d d m Rmv d dd d d- Cu ff x d udd f bd 28- C k U T d f k f f bd w f u bkwd- v! T k f -v C24-47 mkd 47 28- C U ATm328P T dv -v T d d / d f dv mu f bk f bd Yu w d bd C wd m w k T b u C dw d uf bd 4- w m v O T H-4 Tv KSWL v 8 Ob 28 9
T H-4 Tv KSWL v 8 Ob 28 u v d C, u d d k 2- m d dfd CAL K m 2- fm jum d u u m GROUP 4 ASSEMBLY: m d bw A dd mb u fw u A d dv fud v udd k J3 d J4 U6 78L Obv bd R4 K m bw--w-d R22 - K m bw-bk-d-d J2
R K m bw-bk--d ud R K m -bw-w-d 8- DP C k U3 T d d f k f NE32P C U3 T -v Eu /d C f C27 22 u, 222 C26 82, 82 R7 d R2 M m, bw-bk--d R3 d R23 47 m w-v-d-d R8 22K m, d-d--d C3 Obv T w d d v + d f C29 Obv T w d d v + d f C4, 3 GROUP ASSEMBLY: m d bw A dd mb u fw T H-4 Tv KSWL v 8 Ob 28
T H-4 Tv KSWL v 8 Ob 28 2 A d dv fud v udd k Q BS7 T f d f f R6 - M m Bw-bk--d Q2 J3 T f d f f R- K m Bw--w-d k md f SW d S 7 mu b b f Yu m w d f w dm b f R C2 d C22-47 mkd 47 R2 d R3- K m Bw-bk--d R9-22K m Rd-d--d C8-33 u mkd 333 C6-47 mkd 47 47J C7-68 mkd 68 68J J2
T H-4 Tv KSWL v 8 Ob 28 3 X 8 MHz T f md f, d m b ud b w u C - mkd J mm C3-2-6 bw T f d f f GROUP 6 ASSEMBLY: m d bw A dd mb u fw A d dv fud v udd k C, C8 d C2-47 mkd 47 47J C6 - mkd ;J d b w d b w d b w d b w d b w d b d b d d b J2
C2-33 mkd 33 R k L uh T dm mkd w bw-bk bd d v m bd w m v R k L2 68 uh T dm mkd w bu- bd d v m bd w m v C - mkd C3, C7, C9 d C - mkd R k L3 d L4-8 U Bw- bd X u X4 8 MHz A u 3 mb, w f m d bv bd dd D2 u D - N448 B m bdd d f dd bdd mk u bd m u N: D3 d D4 bd, D2 d D bd f T H-4 Tv KSWL v 8 Ob 28 4
GROUP 7 ASSEMBLY: m d bw A dd mb u fw - A d dv fud v udd k R7, R9, R2 d R2 - K m bw-bk--d Q4 NTD29 Eu -k f f w 4- C k U7 T k f w Adju d U7 dd S m u 3 U7, u d/ C bd f Q3, Q, Q6, d Q7, BS7 bv w bv Dd D8 N476 C49 d C - 47 mkd 47 T H-4 Tv KSWL v 8 Ob 28
Wd 8 u f #22 k w d L T37-43 d Tm x d 3/8 m U m kf, u fm ud d T u w m w u d L A -wud d k k : N fw: E m w u u u Dubk u wk T wd v-d ud T d d T wd u w u f u m u v u d f d mbd u! U 2 f #24 m w, wd 6 u T37-2 d d P d bv d L6 GOOD TOROD v b bd U 6 f #24 m w, wd 9 u m T37-2 d d P d bv d L7 BAD TOROD! bd bd d! v b bd C - 82 mkd 82 C2 - mkd BNC bukd jk J U d f u u d d j T m mb f m u bd T H-4 Tv KSWL v 8 Ob 28 6
mb: fu /8 m dd f v u ⅟4 w w 2 Add d d d- W d, b d d f w k T f/ v b T d v W, d b bd ud m w 3 Pu v T u m f u bd d u d u 4 mb v u bd ud dw u w bd d T b d d T mu u w d b m u bd Sd 6 f bw m bd d Mk u u w d f v Cu d uk d u fu bu 6 Sd u d w d f 8 T dd db u A wd bu d: T d md fm f bd m 2 4W d f uff D u -w! A w m j d w udd bum 7 Rmv bd d v 8 Rmv v d d 9 R, R6, w SW d d SW2 Dd u d w m w d P w w /6 ubu w SW d d SW T k d d m v u w w Hd v, u u v d m d Pfm Am d BO P Adjum dbd x R v w T H-4 Tv KSWL v 8 Ob 28 7
2 W u ud dw, m d bv wk uf, v, fu v, u m ⅝ w u d U wdv, f u ukw u u f, d u kw 3 kb, u m wdv w S kb bv v ubb T u kb mu b ju u w d w d fu T m mb f k T H-4 Tv KSWL v 8 Ob 28 8
ALGNMENT: T w m T fu b fmd f u Cb 2 BO djum ----------------------------------------------------------------------------------------------------------------- u Cb: T S3 DDS bd u dd-u SMD f k A u, u fu m b ff b fw udd Hz 7 MHz PROCEDURE: Tu u b 73 khz 2 2- fm jum mkd CAL f U 3 C -m d J A md OK 4 A -4V DC w J2 v 2/mm m u U w-u, H w u u fu w W m f d Du m, TUNNG m u b u d A d f d, m m d b f ud d d U EEPROM T vu vd ubu w u b u w fd d b u m f b f, mv-d - DC w T -d u v, w u z fu A md: C fu u d ud d D-C w Adju u bv MPORTANT: Rmv jum CAL w b md Rmv-d - DC w u m ----------------------------------------------------------------------------------------------------------------- BO P djum: T uk md: Tu CW d dju m C3 u wdv Yu k f mxmum m d 8 Hz 2-dd, u d wk u kb T b md: Pw u u 73 S u b 73 d d f d w w,! Adju C3 vd H m u d * * * T H-4 Tv KSWL v 8 Ob 28 9
O: Su: U DC w H, u 3 R d T d fu f 73 Kz f u u bv 7, du w b fm f xxx u Rdu: Pu u w bf u u fu T du m d u k d Tu z: Bf u kb z bw Hz d 2Hz T w-u dfu Hz z RT: Pu d d u kb dw f f-d A w- u, b-b d RT R u RT ff- ud b b-b TUNE Md Pu d d u w f d w T d d m uu u w djum f u, TUNE md u: d d OR k dd d Pdd Rv d mb Md A/B S A DC w H w AND HOLDNG u w R w w u R? T k dd w 2 d v dd D d w Nx, u B? T k dd w 2 d Md B D, d Md A d M f Md A Yu A B fm u Yu d -v mm d H d m S K md: U w-u, H fmw k f mdd k jk f m 2- u ud, mdd udd, d H um fw k x k u S k mu : Af d k-dw, m uu u ff D u w bf m T TUNE fu wk S k md bu u m wu T mu v m PA dv fm uk k u A Su u: P TUNNG w dw w DC w H d u fu f 7 khz T v f kb-w f u wk d f 4M CW ub-bd T H-4 Tv KSWL v 8 Ob 28 2
Rv Sm: T H-4 Tv KSWL v 8 Ob 28 2
Tm/C Sm: T H-4 Tv KSWL v 8 Ob 28 22
Cm Pm M Akwdm: Tk Sv Wb- KDJV w SOTA POP d fud d f m H u vdd -u fmw w dd m f j Tk Dvd C- NMOS- w d vub w u u, T H-4 Tv w 4SQRP, d vdd KSWL dv w m v 8 Ob 28 23 Dv B, KSWL udd 7 Au 28