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d. IF Amplifier, The S econd Mixer

After passing through the filter, the signal is led to D37, Q7, and D6, and passed

through the second mixer in the opposite direction of the receiving, then the signal

of 71.75MHz is obtained. Q6 operates the CW keying.

The voltage of ALC is added to the second gate of Q7.

The local oscillating signal of 71.295MHz and unwanted signal are eliminated in

FL1: A and FL5. The signal is amplified in 05, passed through FL5, then led to the

balanced mixer of Q3 and Q4.

e. The First Transmitting Mixer

This mixer is the balanced type, and the unwanted signals (IF and local oscillating

signal) are decreased. The best operation is selected by biasing the second gate.

To decrease the spurious, the signal is balanced in VR1.

f. Pow er Amplifier

Passing through tihe mixer, the transmitting signal which has the desired transmit

ting Irequency is passed after switching the LPF tor HF band or BPF tor 50MHz

band. The unwanted signal and especially the leak of local oscillating signal is

decreased as less as possible.

The signal is amplified up to 0~3dBm in Q1. T notch filter consists of C1, C2 and

11. It is tuned to approximately 44MHz while using 50MHz band to decrease the

spurious signal. Then the signal is supplied to PA unit.

2) PA U n it

a. Pow er Amplifier

The signal input to PA unit is amplified up to approximately 100mW. The idling

current of 0601 flows about 100mA during transmitting as A-class amplifier. The

frequency characteristics are compensated by feedback, besides connecting the

capacitor to emitter resistor in parallel.

The signal is amplified up to 10W in Q602 and Q603.

PA amplifier is the wide band range from 1.8MHz to 50MHz

The idling current flows 100mA (adjusted in VR601), and the amplifier is the push-

pull type.

D601 is connected to Q602 and Q603 thermally, and the idling current is compen

sated for temperature. This output is switched at RL601 in 50MHz, then supplied

to filter unit.

b. Final S tage Pow er Am plifier

in the final stage amplifier circuit consisting of Q604 and Q605 (2SC2904), the

idling current of about 300mA is flowing. The base bias is made by Q606. D604

and D605 are connected to 0604, 0605 and Q606 thermally, and the idling current

is compensated for temperature.

The feedback circuit, consisting of R621, R622, R623, C633, R627, R628 and

C637, makes the gain flat in the wide range of 1.8MHz~30MHz.

The 100W output is led to filter unit.

The collector cun'ent of 0606 and Q607 is detected by using FB606 and L611.

Then led to the main unit.

U l

Содержание DX-70

Страница 1: ...R C U I T D E S C R I P T I O N 2 S E M I C O N D U C T O R D A T A 1 2 E X P L O D E D V I E W 2 1 P A R T S L I S T 2 8 A D J U S T M E N T 4 2 P C B O A R D V I E W 4 9 B L O C K D I A G R A M 5 8...

Страница 2: ...7 kg 2 Transmitter Transmit frequency coverage e g U S Version 160 m band 80 m band 40 m band 30 in band 20 m band 17 m band 15 m band 12 m band 10 m band 6 m band 1 8000 to 1 9999MHz 3 5000 to 3 999...

Страница 3: ...equency 71 75 M H z 1st 455 kHz 2nd Sensitivity SSB CW S N 10 dB 0 5 to 1 8 MHz 0 dB 1 pV 1 8 to 30 M H z 12 dB 0 25 j V 50 to 54 MHz 16 dB 0 15 pV A M 1 kHz 30 Mod S N 10 dB 0 5 to 1 8 M H z 20 d B 1...

Страница 4: ...ecause the space noise in 50MHz band is less than it in HF band its exclusive receiving preamplifier is equipped to get high sensitivity The receiving signal of 50MHz or HF is selected in RL514 then a...

Страница 5: ...unit has the characteristics of the band width of 15kHz or more 3dB and the value of guaranteed attenuation of 70dB or more Here the image ratio is determined 70dB or more approx 80dB The first IF amp...

Страница 6: ...n in the FM mode Q23 Q24 and Q25 are active also AGC is operated In SSB and CW modes the following local oscillating frequency is supplied from PLL unit to IC3 balanced mixer then the signal is demodu...

Страница 7: ...ned with the inpul of LPF amplifier IC12 A The high tone noise that is generated in IF amplifier is decreased by LPF amplifier The output of IC12 A is attenuated in R309 and R310 to get the same level...

Страница 8: ...earlier stage A part of the second mixer output whose band width is limited is amplified in Q20 Q19 018 and Q16 The signal is detected in D33 and D34 and the AGC voltage is applied to 019 Q18 and Q16...

Страница 9: ...odulation and output to the balanced modulation of IC2 The output to IC2 is muted by Q54 in CW FM mode b Balanced Mixer C2 is the balanced mixer and the carrier is suppressed in SSB mode To get more r...

Страница 10: ...MHz while using 50MHz band to decrease the spurious signal Then the signal is supplied to PA unit 2 PA U nit a Power Amplifier The signal input to PA unit is amplified up to approximately 100mW The id...

Страница 11: ...he temperature does not go up higher than it while transmitting The temperature at which the fan turns at a middle speed or more is higher than it while transmitting At high temperature fan s turning...

Страница 12: ...e operation in AUTO mode is stopped D107 and R360 are used to get up speed rising when the keying is started D92 and R280 determine the discharge time constant While receiving the time constant is pro...

Страница 13: ...y is divided by 10 in IC19 of the main unit to obtain the sidetone of 650Hz 850Hz The comparison frequency of the second local oscillator is changed according to the CW offset setting To relate with t...

Страница 14: ...D77 and it makes the charge voltage such as electrolytic capacitor discharge momentarily not to remain T8V After delayed the transmitting rise time in IC10 B the signal is inverted in 1C18 D then T8V...

Страница 15: ...ter LPF in HF band From now on the operation in HF band is shown and in 50MHz band the operation is the same L534 is 10 turn bifilar of toroidal core twisted pairs of AWG Therefore the both sides are...

Страница 16: ...t D1019 and C1002 are used to hold the output voltage of 5V by keeping the input voltage of 5V regulated power supply as long as possible The regulated power supply ol about 10 5V consists of Q1003 Q1...

Страница 17: ...pply of 5V Details 1 There are 3 kinds of power supply as follows The voltage of 13V passed through the switch The voltage of 8V made in the MAIN unit The voltage of 5V made in the PLL unit Power supp...

Страница 18: ...N the analogue switch of IC715 The modulation signal is passed through R798 IC715 R796 and C801 and it is FM modulated in VC02 The Transmission of CWU CWL CN701 Pin24 CWU or CN701 Pin25 CWL is supplie...

Страница 19: ...equency of 455kHz is output from IC712 Pin3 and sent to the MAIN unit from J701 after amplified in Q723 The Output level is approximately 5dB Frequency Relations depending on the Mode USB TX RX LSB TX...

Страница 20: ...When the frequency is 50MHz in VC03 the oscillated frequency within 76 75 80 75MHz by D961 TC961 and 0961 are synthesized with the frequency of 45MHz by the DBM Double Balanced Mixer in L729 L730 and...

Страница 21: ...rough Q932 and divided by 20 in IC704 and supplied through Q933 Then the signal is divided by 10 in IC705 and the frequency of 775 875kHz 25Hz step is fed to the mixer IC701 Therefore the operation fr...

Страница 22: ...nk and IC901 Pin4 is OV and FM is supplied 8V and tone unit power supply is ON The tone level is controlled with the DIP switch SW901 Pin1 and Pin2 to adjust the level 12 FM TX deviation Default is 2...

Страница 23: ...K2 SERIAL2 CK 0 MODE BPF etc transmits clock 24 P35 S02 DAT2 SERIAL2 DATA o MODE BPF etc data transmission 2b P36 STR8 ENA SERIAL SELECT 0 MODE BPF etc data enatxe select on Enatfe i 6 P3 CS ENB SERIA...

Страница 24: ...6 Vcc 5V 77 P10 TMOW MONI 0 Open the squelch forcedly monitor Squelch open torcsdiy 78 P11 TMOFL UT o The conmand io put out the light forcedly and flashing lo LCD driver Put out the light forcedly Du...

Страница 25: ...40 mV rm s Freq P1 P2 P3 P4 P5 P6 Freq P1 P2 P3 P4 P5 P6 57 0 1 186 2 1 1 1 1 71 9 1 192 8 1 1 1 1 1 74 4 1 i 203 5 1 77 0 1 210 7 1 1 79 7 1 218 1 1 1 82 5 1 1 225 7 1 1 1 85 4 1 1 1 233 6 1 80 5 1 2...

Страница 26: ...Input CZ 5 12 ZD Sooettft input Decoupling CZ 6 1 1 ZD Rlter Output Limrler Output CZ 7 10 ZD FHIer Input Quad Input CZ 8 9 Demodulate Output 3 M5218FP XA0068 Dual Low Noise Operational Amplifiers Out...

Страница 27: ...D6345GS XA0114 8bit Serial in Parallel Out Driver No Pin Marne Description 1 GND GND terminal 2 EN Enable terminal 3 LAT Latch terminal 4 SO Serial data output terminal 5 12 8 Da a output ermina 13 SI...

Страница 28: ...er Demultiplexer L o g ic D ia g r a m Vdd 16 o INHIB1T 6 o le v e l A 10 o CONVE RTER B 9 H Vss 8 o Vee 7 o Xo 12 o Xt 14 o X2 15 cv X 3 11 O Y0 1 o Y i 5 o V 2 V3 4 o 13 X 3 Y y T Y 2 T COMMON Y T Y...

Страница 29: ...ERIAL Os OUTPUT STROBE d 1 16 d Vd d SERIAL IN d 2 15 d Output Enable CLOCK d 3 U 3 1 4 d 05 01 d 4 C 4 O CD 13 d 06 02 d 5 12 d 07 Q3 d 6 T 1 11 d Q8 04 d 7 10d Q s Vss d 8 9 d Os 12 MC12019D XA0292...

Страница 30: ...tions Q C o D R 0 3 c C o D O _ r r v 3 3 OA Clock Aa r _ 1 16 Z Z Vcc Reset a tz 2 15 Z Z Clock Ab 0 8 QAa z z 3 2 o n I m 1 4 Z D Reset b Clock Ba r 4 13 Z D QAb OBa z z 5 o Ca 12 Z D Clock Bb 6 1 O...

Страница 31: ...4 CD 10 ZD NC Q4 c z 6 n 9 ZD 03 Vss rz z7 8 ZD NC Clock Clear Output State Don t care H All Outpul L _ r L No Charge L _ Advance to o e s ta g e 16 MC14071BF XA0296 Quad 2 Input OR Gate T r u th T a...

Страница 32: ...8 fin 1 Comparator divider input termina1 Clock Senal clock input terminal 10 Data 1 Senal data input lerminai 1 1 L 1 Load enable inpcrt torminaI 1 Do 0 Aclive LPF connection terminal tr fv Dnve mode...

Страница 33: ...ND terminal ID 0 Phase detector output terminal Lock HUniock negative pulse fin Prescaler input terminal 9 Clock Senal clock input terminal 10 Data Senal data input terminal LE 1 Load enable input ter...

Страница 34: ...s nz 7 8 Z Z 1 In 1C 20 AN612 XA0300 Balanced Modulator Circuit Parameter Symbol Condition Ratings Unit Max supply voltage Vcc 14 4 V Supply current lee 15 mA Power dissipation PD 220 mW Total current...

Страница 35: ...20k 3V 80 90 dB Noise output voltage Vnoi Vc 0 ATT 1 4dB RklOkii R0 20kil BW 20Hz 20kH _ 3V 30 60 jiVrms Noise output voltage Vno2 Vc 40dB Rl 10kft RQ 20kQ BW 20Hz 20kH 3V 5 jiVrms 22 LC75821W XA0303...

Страница 36: ...ut d 4 cn 5 Z D GND Vcc 4V Parameter Symbol Condition M in Typ Max Unit Current lo No signal 2 6 4 5 7 2 mA Saturated output voltage Vo id 98MHz 80dB V 30 50 72 mV rm s Local oscillator voltage Vosc i...

Страница 37: ...0305 Dual D Type Flip Flop T r u th T a b le 25 L78LR05B XA0338 Voltage Regulator B lo c k D ia g r a m Parameter Symbol Ratings U nit Input voltage Vin 7 5 20 V Output currenl lout 1 150 mA Output vo...

Страница 38: ...3 H o 12d In 1D Out B 4 o C 11 r Out D In 1B d 5 o C D T 10 d i Out C In2B d 6 9 i In2C Vss d 7 8 d j In 1C 28 24LC16B XA0351 16K bits CMOS Serial EEPROM B lo c k D ia g r a m Memory co n ird c irc u...

Страница 39: ...gnal 12 16 mA Conversion gain Gc Signal 70mV r m s 1 75MHz Carrier 100mV r m s 28 25MHz Output 30MHz 2 0 2 dB Signal leakage Ls 40 2 0 dB Carrier leakage Lc 32 20 dB Intermodulated distortion IM D Sig...

Страница 40: ...r j o 30 Transistor Diode and LED Outline Drawings To p View...

Страница 41: ...C O M 2 C O M 1...

Страница 42: ......

Страница 43: ...KZ0030 W h e n rem oving the b a ck co ver p res s the location T to re le a s e the bu m p along the to p ed ge then press th e location 2 to re le a s e th e bum p along the sid e e d g e n e ar th...

Страница 44: ...4 PLL Unit and Fan 23...

Страница 45: ...5 Top View 1 2 4...

Страница 46: ...J...

Страница 47: ...OOOOOOOOO oooocoooooooo OOOOOOOOOOOOO oooocoooooooo ooooooooooooo ooooooooooooo ooooooooooooo ooooooooooooo ooooooooooooo O O O O O OOO Q 000o 000000 0000000 ooooooooooooo ooooooooooooo ooooooooooooo...

Страница 48: ...7 LPF Unit AJ0017 AJ0017 2 6 AJ0029...

Страница 49: ...8 PA Unit and LPF Unit...

Страница 50: ...C hip c Ct6Q8JB1HI52KT A C49 CU3038 Chip c C1608JB H182K7 A Ref No Parts No Description Parts Name C50 C U 3041 Chip C C1608JB1H332KT A C 5 1 CU8042 Chi p C C2Q12JB1C104KT A C52 C U 3051 Chip C C1608J...

Страница 51: ...E473ZT A C185 CU3056 Chip c C1608JF1E473ZT A C186 CU3056 Chip c C1608JF1E473ZT A Ref No Parts No Description Parts Name Cl 8 7 CU3056 Chip C C1608JF1E473ZT A C 88 CU3056 Chip C C1608JF1E473ZT A C189 C...

Страница 52: ...antalum TM C M B 1C 106M TR C277 CU305 C hip C C1608JB1E223KT A C278 CU8042 Chip C C20I2JB1C104KT A C279 CU3047 Chip C C1608JB H103KT A IV CO Ref No Parts No Description Parts Name C280 C SQ 230 C hip...

Страница 53: ...D0246 D i ode DAN235UT106 D 7 XD0289 Diode S3275CTE12L D 8 XD0246 D i ode DAN235U 106 D 9 XD0246 Diode DAN235UT106 DIO XD 0231 Diode DAP202U T106 Dll XD 0231 Di ode DAP202U T106 Ref No Parts No Descri...

Страница 54: ...H C 3357D R IC8 XA0224 1 C NJM 2904M T1 IC9 XA0224 1 C NJM 2904M T1 IC10 XA0299 1 C BU 4001BF ICH XA0082 1 C M C7808CT IC 2 XA0068 1 C M5218FP T0M IC 3 XA0301 1 C M 5222FP Ref No Parts No Description...

Страница 55: ...ansistor 2SC4081T106R Ref No Parts No Description Parts Name Q 2 9 XU0148 Transistor DTC144EU 106 030 XT0094 Transistor 2SA1576T106R Q 3 1 XTQ095 Transistor 2SC4081T106R 032 XU0061 Transistor UN5211 T...

Страница 56: ...GSYJ331V R74 RK3044 Chip R ERJ3GSYJ332V R75 RK3G 38 Chip R ERJ3GSYJ102V C O R f No Parts No Description Parts Name R76 RK3013 C h P R ERJ3GSYJ8R2V R 77 RK3020 C h D R ERJ3GSYJ330V R78 RK3040 C h P R E...

Страница 57: ...RK3062 Chip R ERJ3GSYJ104V R 144 RK3026 C hip R ERJ3GSYJ101V R I9Q RK3062 C hj p R ERJ3GSYJ104V R145 RK3058 Chip R ERJ3GSYJ473V R1 9 1 RK3059 Chip R ERJ3GSYJ563V R146 RK3074 Chip R ERJ3GSYJ105Y R192...

Страница 58: ...R262 RK3038 C hip R ERJ3GSYJ102V R263 RK3034 C hip R ERJ3GSYJ471V R264 RK3034 Chip R ERJ3GSYJ471V Ref No Parts No Description Parts Name R265 RK3058 Chip R ERJ3GSYJ473V R266 RK3034 Chip R ERJ3GSYJ471V...

Страница 59: ...p R ERJ3GSYJ680V R354 RK3033 C hip R ERJ3GSYJ391V R355 R K3064 C hip R ERJ3GSYJ154V R356 RK3046 C hip R ERJ3GSYJ472V Ref No Parts No Description Parts Name R357 RK303 Chip R ERJ3GSYJ221V R358 RK3045 C...

Страница 60: ...C 3035 Chip C C1608JB1HI02KT A C 57 CU3035 Chip C Cl608JB1HI02KT A C 58 CU3059 Chip C CI608JF1El04ZT A C 73 CU3025 Chip C C1608CH1H151JT A C 74 CU3034 Chip C C1608JBJH821KT A C 75 CU3034 Chip C C1608...

Страница 61: ...J 3 L43 Q C0123 Chip L NL322522T R12J 3 L44 Q C0123 Chip L NL322522T R12J 3 R45 RK3028 C hip R ERJ3GSYJ15IV R46 RK4068 Chip R ERJ14YJ151H R53 RK3028 Chip R ERJ3GSYJ151V Ref No Parts No Description Par...

Страница 62: ...761 CU3047 Chip C C1608JB1HI03KT A C762 CU3035 Chip C C1608JB1HI02KT A C763 CU3035 Chip C C16 8JB1H1Q2KT A Re No Parts No Description Parts Name C764 CU3035 Chip C C1608JB1HI02KT A C765 CU3014 Chip C...

Страница 63: ...c C1608CH1H010CT A C858 C U 3011 C h p c C1608CH1H100CT A CB59 CU3035 C h P c C1608JBIH102KT A C860 CU3035 Ch P c C1608JB1H102KT A C B 61 CU3002 Ch P c C1608CH1H010CT A Re No Parts No Description Par...

Страница 64: ...2T 5R6J L719 Q C0048 Chip L NL322522T 1Q0J CO cn Ref No Parts No Description Parts Name L720 QA01Q 8 Coi 1 QAQ 138 L721 QA0108 C oi 1 QA0108 L722 QA0108 Coi 1 QA0108 L724 Q C0124 Chip L NL322522T R15J...

Страница 65: ...4V R787 RK3062 Chip R ERJ3GSYJ104V R788 RK3046 Chip R ERJ3GSYJ472V R794 RK3026 Chip R ERJ3GSYJ101V Ref No Parts No Description Parts Name 730 XU0148 Transistor DTC144EUT1Q6 0731 XT0059 Transistor 2SC3...

Страница 66: ...01V R840 RK3062 C hip R ERJ3GSYJ1 04V R841 RK3042 Chip R ERJ3GSYJ222V R842 RK3033 C hip R ERJ3GSYJ391V Ref No Parts No Description Parts Name R843 RK3046 Chip R ERJ3GSYJ472V R 844 RK3030 Chip R ERJ3GS...

Страница 67: ...2019DR2 L931 QA0I09 Coi i QA0109 L932 Q C0043 Chip L M322522T 2R2J Q 931 XE0006 FET 2SK210GR TE85L Ref No Parts No Description Parts Name Q 932 XT0Q59 Transistor 2SC3082KT146Q 0933 XT0095 Transistor 2...

Страница 68: ...KT A C 981 CU3018 Chip C C1608CH1H390JT A C9B2 CU3005 Chip C Cl608CH H040CT A C983 CU3017 Chip C C1608CH1H330JT A CJ n Ref No Parts No Description Parts Name C984 C U 3011 C hip C C1608CH1H100CT A C98...

Страница 69: ...ription Parts Name C502 CU3047 Chip C C1608JB1H103KT A C503 CC5095 Ceramic C RCC12SL471J L46AU C504 CC5093 Ceramic C RCC12SL391J L46AU C505 CM 0008 Nica C D M 19 222J 500V C506 CC5083 Ceramic C RCC08S...

Страница 70: ...01 CN504 RD 0108 Resistor J P W 0 1 R 01 CN505 UE0043 Connector PI22A02 Ref No Parts No Description Parts Name C N 507 UE0235 Connector 00 6208 000 112 001 C N 5Q 8 UE0070 Connector PI22A04M C N 509 U...

Страница 71: ...2V R530 RK0008 Chip R ERJ6GEYJ330V R 531 RK3023 C hi p R ERJ3GSYJ560V R532 RK0008 Chip R ERJ6GEYJ330V R533 R K 3Q 0 1 C hip R ERJ3GSY0R00V Ref No Parts No Description Parts Name R534 RD 01Q 8 Resistor...

Страница 72: ...667 CU8042 C hip C C2012JB1CI04KT A C668 CU3047 Chip C C1608JB1H103KT A C669 CU3047 Chip C Cl608JB1H103KT A C670 CU3047 C hip C Cl608JB1H103KT A C67 CU3023 Chip C C1608CHIH10IJT A CJ CD Ref No Parts N...

Страница 73: ...K3053 Chi p R ERJ3GSYJ183V R646 RK3056 Chip R ERJ3GSYJ333V R647 RK3048 Chip R ERJ3GSYJR82V R648 RK3052 Chip R ERJ3GSYJI53V R649 RK3044 C hiD R ERJ3GSYJ332V R 65G RK3038 Chip R ERJ3GSYJ102V Ref No Part...

Страница 74: ...CD T D I 004 XD 0230 Diode D AN202U T1Q 6 D1005 XD 0230 O i ode DAN202U T106 01007 XD0230 D i ode DAN202U T106 01008 XD 0254 D i ode 1SS355 TE 17 0 009 XD 0230 Diode DAN202U T106 Ref No Parts No Desc...

Страница 75: ...055 RK3038 C h P R ERJ3GSYJ102V Rf 056 RK3034 C h P R ERJ3GSYJ471V Ref No Parts No Description Parts Name R1057 RK3034 Chip R ERJ3GSYJ471V R1058 RK3038 C hip R ERJ3GSYJ102V R1059 RK3034 C hip R ERJ3GS...

Страница 76: ...FRO N T Ci rcui t Board E l m m AP0022 Dia Nut Screw 2 6 M 2B C VOL Z003 W asher C1001 CU3047 Chip C Cl608JB1HI03KT A FFQ015 Light Shield Cloth CN1005 UE0223 Connector 53263 0890 FF0031 Cloth 7 30 D1...

Страница 77: ...ns Card 70 O S 3 6 2 A Specifications Card 70T E H M 4 2 M C Packing FP0D99 Indicate Seal FP0100 Sea T O H K 385 1tern Carton H M 0148 1tern Carton T HP0002 Protection Bag lnstr Card HP0039 Protection...

Страница 78: ...3 DC regulated power supply 13 80V 25A or more 4 Power meter 5 Linear detector 6 SG or RF generator P A U n it A d ju s tm e n t P o in ts should be equipped with 20 25A current limit and current mete...

Страница 79: ...x 2 SSG OFF Mode USB Current Meter 3A CN605 unit total current VR602 Connect terminal pin of NFB unit to the ground check the total current in transmission mode Then remove terminal pin from ground a...

Страница 80: ...5A or more 3 Frequency counter 500MHz or more 4 Spectrum Analyzer iG H zorrnore 5 Oscilloscope 100MHz or more P L L U n it A d ju s tm e n t P o in ts L735 TC705 L706 L707 L708 T P L712 L734 L709 TC76...

Страница 81: ...ange f 7 0999MHz TP6 1V 3V 7 1000MHz 3V 4 3V VC03 Lock range U0 1500MHz TP0 VC03 TC961 2 5V When the voltage is f 10 4999MHz TC961 6 45V or below adjust the unit to 6 5V again 6 45V 7 0V f 10 5000MHz...

Страница 82: ...2kHz RX UT IF Shift center 456 70kHz 0 2kHz TX UT IF Shift center 456 50kHz 0 2kHz Frequency 7 1000MHz FM J703 TC701 L702 78850 00kHz Adjust TC701 at first then L702 when TC701 can not be adjusted Le...

Страница 83: ...quency 250 3Hz 1 2 3 4 5 6 7 8 Freq Counter EJ26 u CN99 1 1 249 6 251 0Hz Tone Frequency 156 3Hz 1 2 3 4 5 6 7 8 Freq Counter J26 u CN99 1 1 156 2 157 2Hz Tone Level 156 3Hz 1 2 3 4 5 6 7 8 Oscillosco...

Страница 84: ...200M Hz 4 Distortionmeter A Fvoltagemeter 5 8Qspeaker 6 Oscilloscope 7 N Badjustmenttool Main Unit Adjustment Setting Oscilloscope Main Unit Adjustment Points V F U O VRI5 V R 11 V R 2 L6f l c n O VR...

Страница 85: ...repeatedly to obtain the maximum receiving signal L56 57 58 L59 12 13 L66 L68 L69 Mode FM 14 1000MHz SG output OdBji Mod 1kHz 3 5kHzDEV Distortion Meter L59 L12 L13 Adjust repeatedly to obtain the max...

Страница 86: ...scope 6 S M eter A djustm ent Item Condition Measurement Adjustment Equipment Terminal Unit Parts Method RX Total Gain SG output 40dB i Mod OFF Mode USB f 14 0993MHz RF Gain OdB AF Voltmeter SP Main V...

Страница 87: ...F GAIN from 10dB orderly the meter swings shorter and shorter FILTER Switching Output OFF Mode USB AM CW Check Switch the FILTER in every mode except FM the noise sound should be changed Band Sensitiv...

Страница 88: ...egulatedpower supply 13 80V25Aor more shouldbe equippedw ith20 25Acurrent lim it 4 Power meter 100W 1 9 30M H z 10W 1 9 60M Hzormore 5 Lineardetector 6 A Fgenerator 6000 7 A Fvoltagemeter 8 Oscillosco...

Страница 89: ...inal VR6 Turn VR6 counterclockwise so that the total current becomes 20A Be careful not to run much current for short time Power Mode FM Power Meter HF Antenna Terminal VR7 Turn VR7 clockwise to decre...

Страница 90: ...LSB USB Oscilloscope HF Antenna Terminal VR3 VR4 Adjust VR3 and VR4 so that the carrier suppression is 50dB 1 300 or below at 100W The carrier suppression should be decreased in both USB and LSB CW Wa...

Страница 91: ...um value 60dB or below Spurious AG output OFF Mode FM Band MHz 1 9 3 5 10 14 18 21 24 28 HF Antenna Terminal Check 52dB or below 47dB or below in 10MHz band only L9 Adjust so that the value is within...

Страница 92: ...PC BORD VIEW 1 CPU Unit Side A 2 C P UU n itS id eB 3 V o l U n itS id eA 4 Vol Unit Side B 5 Jack Unit Side A r 6 Jack Unit Side B o o...

Страница 93: ...7 Main Unit Side A 50...

Страница 94: ...i H 3 S 3 jgP S di s i SBggs m m 9 s r to e e i3 E B E toED u to H E D tD a r n P R i l A a t o 3 HHA _ o W gp 1 1 1 M M W uyy yyy 4 2 l 5 S S U 2 C M o o a o p i S a a f I a a a t S C H is 1 1 5 6 h...

Страница 95: ...O U C 3 c o o o o o o o o O O O O O f TT mT7 J PD09A09M P122AQ5M C6W 100U16V O CP602 L806 OR0012 O 0603 2SC1972 TBP P01X A VRfiOl 220 w 0602 O L 1 j ZBF2530 JPJ2545 01 510 O CP610 JPJ254S 0 1 510 J60...

Страница 96: ...s g ifS QUID 03 0 4 0 0 3 J 8 3 7 O 4 7 K C 0 4 cm tK isI ROSS 5 6 Q 0 E C B 7 e G T Q i J U IB a _____ rrls cowiGM iiu i K y H R B n o IC O N IM 2 M 4 r Q w e 4 2 iBIco m M7tim T B T T 1U R Q 4 0 M4...

Страница 97: ...1 1 F ilterU n itS id eA 3 C 5 4 3 56 P C N J CL O C V J f J o c Ifc CO r Q O CJ X irj in o I uo lO U I o r X Q 54 ip 1 8 E o 3 2 O t n r s o o o o o CN509 P122A05M o it o...

Страница 98: ...m 1 H 5M 3 0 a 3 CMS 22 m r r F tfi IQ s njfT ara v f 1 o b o oil C L g g J r B iD cS fe HLS4198 ASM 1 ML i O a u y am o V uF ciU e n n RSV9 O a 31 M 1 pC Q m I w Q IB J s i S i la w L iwie c i MU 8 8...

Страница 99: ...1 3 P L LU in tS id eA T Z 0 0 5 6 J J U U T Z L T w j Q X70 O P O CN702 OOOO B6B ZR 1 n il y o 2 X o B 5 i5 bhje Ar i W c j U X 1 0 8 7 o o 56...

Страница 100: ...Ar x r i3 n 9s 74HC4040 s o 2 2 e yysw ry en...

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Страница 112: ...vj o C onnectionExam ple Supplied co ax cable A d ju stm en t Point...

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Страница 116: ...S c h e m a t i c D i a g r a m f o r E D X 1 73...

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