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A Note From 

Dave Miller (AA4DF) and Jill Bryant 

at 

http://www.aa4df.com

 

First, please know that we not only provide free PDFs like this one, we also supply 
PDF documents for profit.  Please know that there is never an extraneous letter (like 
this one) added to PDFs we sell. 
 
This TR-7800/7850 Service document is provided to you through the generosity of 
Steve, K7LZJ.   
 
This PDF is made from a photostat copy of an original. The 600 dpi scans made 
from the copy are available on CD from our web site, as they are too large to 
transmit over FTP. We don’t recommend them for higher quality, though, since 
readability doesn’t perceptibly improve with them since the original source was a 
copy.  
 
You will soon note that “marketing” and “leeching” vendors will soon be selling this 
scan on eBay.  “The Leech” in Houston will say nothing about quality, and “The 
Marketer” in Minnesota will make up specifications to pretend he scanned it 
himself, as he does with so many HP factory downloads.  Please support original 
PDF producers; “leeches” and “marketers” who obtain and sell the work of others 
or sell free internet download material to naïve eBay buyers for high prices are 
directly responsible for the scarcity of new material in the scanned manuals trade.   
 
Also, PLEASE don’t upload this to K4XL’s BAMA! BAMA has plagiarized most of 
our Tektronix material, and if you investigate you’ll see that they have a great deal 
more test equipment manual inventory than useful ham radio inventory (after all, 
test equipment docs are “where the money is”) even though they masquerade as a 
ham radio site, and that coupled with the presence of the words “if you bought this 
from anyone other than BAMA…” locked into the material pretty well tells you 
what their intentions are. Wildly waving the “FREE! FREE! FREE!” banner they 
are tricking decent people into plagiarizing working vendors, with the ultimate 
objective being for BAMA to profit from the labor of others at no cost to themselves. 
 
Otherwise, pass it around all you wish. Thanks for taking the time to read this. 
 
-Dave and Jill 
 http://www.aa4df.com 

Содержание TR 7800

Страница 1: ...oes with so many HP factory downloads Please support original PDF producers leeches and marketers who obtain and sell the work of others or sell free internet download material to naïve eBay buyers for high prices are directly responsible for the scarcity of new material in the scanned manuals trade Also PLEASE don t upload this to K4XL s BAMA BAMA has plagiarized most of our Tektronix material an...

Страница 2: ...1 PLL Unit X50 1650 10 11 Control Unit X53 1180 XX 12 Encoder Unit X54 1500 10 12 LED PC Board 12 DISPLAY Unit X54 1510 10 13 RX Unit X55 1270 XX 1 4 PARTS LIST 15 KEY BOARD ASS Y 2 0 PACKING DISASSEMB1 Y 2 1 LEVEL DIAGRAM 2 4 ADJUSTMENTS 2 5 SCHEMATIC DIAGRAM 3 1 ABBREVIATIONS 32 REFERENCE DATA 3 4 SPECIFICATIONS 3 5 ...

Страница 3: ...DISPLAY UNIT X54 1510 10 CONTROL UNIT X U 180 10 ...

Страница 4: ...nse lnput and output impedance 2 51 4 53 6 Table 4 Ceramic filter L72 0315 05 CFW455F RX Unit L10 Rating A 10 7 MHz RED B 10 67 MHz BLUE C 10 73 MHz ORANGE I t 3 0 kHz D 10 64 MHz BLACK E 10 76 MHz WHITE 280f 5 0 kHz 650 kHz or less 0 5 dB or less 6 dB or less 3 0 d B o r m o r e a t 9 12MHz 330R Item Nominal center frequency 6 dB bandwidth 50 dB bandwidth Ripple within 455 f 4 kHz Loss Guaranteed...

Страница 5: ...3SK74 L 1 0 kHz 1 I Q8 2SC1775 E Q3 IF AMP N 540 1049 5 4 1 0 49 MHz Q10 12 TC9122P 0 1 6 PIN No 127 8 MHz 10 24 MHz DATA 4 bit DATA 4 bit DATA 4 bit AMP OSC MULTl I X9 133 205 138 300 MHz 0 15 TC5082P GL E 1BUFF 1142005 MHz DC Signal 2SK30A GR T D5 r i Fig 2 PLL Unit X50 1650 10 block diagram LPF VCO BUFF 3SK74 L ToRXU N 1 1024 TC5081P LT LR Q2 2SC1923 0 2SC2240 GR Q1 2SK19 GR Q14 Q6 7 ...

Страница 6: ... the BT line through Q 2 8 to the M B llne When the Power sw tch 1 s ON the 8V AVR clrcult is act vatedby Q27 and the NI Cd s are charged through R94 and D l 9 3 Backup Hold Time 1 Dur ng englne start up voltage at the battery terml nal drops C6 and C7 In the control unlt afford about 1 5 sec of backup tlme S I N Fig 3 TC5081P PLL Unit 014 Phase comparator timing chart I AIM 1 AOuT Fig 4 TC5081P P...

Страница 7: ...the binary data 10 MHz 1 MHz 100 kHz and 1 0 kHz order from the control unit to obtain a 10 kHz step s gnal The 10 24 MHz signal from the RX unit is frequency divided 1 1024 by Q15 to a 1 0 kHz reference srgnal IS then phase detected by 014 Thrs srgnal through low pass filters Q6 and Q7 is applred via the CV lrne to the varr cap drodes D21 24 In the RX unlt as a control voltage In the VCO HET c rc...

Страница 8: ...wltch c2 63 REV swltch C BI 2 I f f l m s 2 st m vr J c r Tone encoder P E Latch 0 17 Decoder driver Q28 v r a c Q16 KEY BOARD 4 digit LED for F display Fig 7 Control Unit block diagram x Don t care No change In state of latch Z High impedance Qn State of addressed latch Fig 8 Function diagram of MC14599B Control unit 0 1 7 Table 9 Truth table Control Unit 0 1 7 ...

Страница 9: ...is Q 15 a 5V AVR X Y X X I X L X UP Clockwtse dtrect on DOWN Counter clockw se direction A B 0 Fig 1 0 Encoder input timing chart H L H H H H L L H H L H H H H L H H H H X X X X L L L L X X X X Encoder Input a The encoder 25 cIlcks turn is a mechanical ON OFF J swltch havlng a phase d fference The encoder clrcuit 0 1 9 and 0 2 0 are used to prevent chatter and to shape waveform A rlght turn Inputs...

Страница 10: ...OR gates the rising and falling portions of the pulse are detected and fed to the terminals A B C and D The srgnal IS applled to Q19 of the control unit to separate the pulse by the rotational dlrectlon The separated pulse wldth I S set to about 3 m sec by the one shot clrcuit Q20 to Input the slg nal to the micro processor 0 18 DOWN Counter clockwise direct on Fig 11 Encoder Unit timing chart ENC...

Страница 11: ...glass 1 1 8 1 0 0 6 2 8 1 4 Case 8 flower A01 0773 03 Knob K23 0734 04 6P metal socket MIC E06 0651 05 E07 0651 05 Push knob Mating connector K27 0414 04 Main knob K21 0751 03 Push knob K27 0415 04 Heat sink FO1 0747 05 Foot Mating connector JO2 0069 05 ...

Страница 12: ...l C28 and L 9 as short as rc module w thout applylng stress poss ble to them Attachment method of L15 Attachment d rect on of TC1 and L 2 Soldered L15 T C l Short jumper 0 f k r PLL U N l T X50 1650 10 0 1 2SK19 GR TRIO 5 0 2 1 3 2 S C 1 9 2 3 0 0 3 9 3SK74 L Q 4 1 0 12 2SC460 Bi 0 5 2SK30A GR Q 6 7 2SC2240 GR 0 8 2SC1775 E 0 1 4 TC5081P 0 1 5 TC5082P GL Parts list Page 17 1 6 9 1 2 2 DI I S V O S...

Страница 13: ... UNlT X53 1180 XX XX 1O K 61 W T Parts list Page 17 I ____ Attachment method of the transducer BLUE T95 0051 05 Mln connect wafer E40 0311 05 3 I r ENCODER UNlT X54 1500 10 arts list Page 18 D101 102 r LED J25 2752 04 AA5532T ...

Страница 14: ...I Pin NO 9 Dot 3 Dot 2 Doti4 P n N o 4 2 2 3 2 6 7 9 Fig 13 TLR4135 Display Unit D6 pin NO P N0 7 Fig 1 4 TLM8051 Display Unit D8 DIGIT 2 9 5 1 3 4 6 7 8 9 Pi NO 10 1 Pin NO6 pin 0 1 Pin N0 5 Fig 15 TLR323 Display Unit D7 LB1409 Display Unit Q1 r 3 12 11 10 9 8 Vrlll VCC Vrd2 09 08 O I 9 2 9 916 915 914 9 OUT GND Fig 16 Equivalent circuit ...

Страница 15: ...PC BOARD VIEW RX UNIT X55 1270 XI0 XX 10 K 51 T 61 W Parts list Page 18 Attachment method of the C90 0804 05 Solder PC BOARD 2SK6 1 GR ...

Страница 16: ...mperature C 2nd Word G H J K L 1st word Color ppm C 5 Capacitor value Example 010 1 pF 1 0 0 1 0 pF 101 1 0 0 pF 102 lOO0pF 0 0 0 1 j F 103 0 01 yF L Red 8 0 C Black 0 3 0 8 5 c a G Tolerance P Orange 1 5 0 B O E F 3 0 t 8 5 Less than 10 pF Cord 8 C D F G pF I 0 1 1 0 2 5 1 A 0 5 1 1 k 2 R Yellow 2 2 0 3 0 8 5 Abbreviation Abbreviation Capacitor Mylar Ceramic Styren Electrolytic Tantalum M C Mica ...

Страница 17: ...s I I D101 102 V30 1170 06 I i LED AA5532T W01 0401 04 Allen key W02 0315 05 Rotary encoder X45 1 150 10 Final unit ir X50 1650 1 0 PLL unit ir X53 1180 10 Control unit K i X53 1180 61 Control unit W T r X54 1500 1 0 Encoder unit I X54 1510 10 Dlsplay unit Zr X55 1270 10 RX unit K ir X55 1270 51 PX unit T a X55 1270 61 RX unit W C UHF type receptacle 2P Metal socket Power jack BACK UP Earphone jac...

Страница 18: ...mer 6pF Ceramic tcmmer 1OpF Square termcnal x 3 Mini connect wafer 2P Mini connect wafer 4P Mini connect wafer 6P Mini connect wafer 7P Fern inductor 3 3pH Oscillating coil VCO Ferri inductor 3 3pH Tuning coil Tuncng cot1 Choke coil 4 7pH 5 Ferri inductor 1mH Ferri inductor 470pH Tuning co11 Ferri inductor 1mH Ferri inductor 15pH Crystal 14 2005 MHz Ferri inductor 470pH Trtm pot 50kR Short jumper ...

Страница 19: ...Diode 181555 Diode 1N60 D ode 181555 not used Diode 161555 D ode 1N60 Diode IS1555 K Diode IS1555 W T X54 1500 10 marks R e iz a a Sr Ref No C2 C3 C4 D1 D2 D3 D 4 Ref No C1 4 Pans No CS15ElCOlOM CS15ElC4R7M CS15ElVORlM E40 0373 05 E40 0973 05 N09 0625 04 N14 0520 04 V11 7272 36 V1 1 7272 46 V11 7272 36 V11 7272 46 Descr pt on T 1PF 16V T 4 7 F 16V T O lpF 35V M I I connect wafer 3P M n i connect w...

Страница 20: ... 470pF 16V small E 47pF 1OV E 4 7 F 16V E 47pF 1OV T 1pF 16V E 4 7pF 25V M L 0 0068pF 210 ML 0 0022pF f 10 E 22pF 16V E 47pF 1OV E 50V E 4 7pF 25V E 47pF 1OV M L 0 OlpF 210 M L 0 039pF 210 C 1OpF 50 5pF C 1PF fO 25pF C 220pF f 5 C 1OpF fO 5pF C 18pF 55 C 33pF f 5 C 22pF 25 C P F f 0 25pF C 1OpF fO 5pF C 7pF fO 5pF C f0 25pF C 3pF P F f O 5 p F C 5pF fO 25pF C P F f0 5pF C f 0 25pF C 22pF 5pF 55 C ...

Страница 21: ... 2SC460 B TR 2SC1775 EJ TR 2SC1815 YI TR 2SA1015 YJ TR 2SC1815 YI IC HA1366W 0 2 4 025 26 Q27 Q28 0 2 9 Q30 Q31 32 Re marks V03 0336 05 VO3 1815 06 V30 1223 16 V01 1015 06 V03 2240 06 V30 0039 05 V03 0079 05 Q33 34 Q35 036 Q37 38 01 2 D3 6 07 70 011 D l 2 0 13 014 D l 5 D l 6 D l 7 D l 8 D l 9 020 21 D22 24 D25 026 D27 V09 1014 06 FET 2SK61 GR V09 1002 56 FET 3SK74 L V03 2538 16 TR 2SC2538 22 A VO...

Страница 22: ...T91 0313 05 K Accessory bag H25 0049 03 Protectine Phone plug x 1 E12 0001 05 Fuse 8A x 1 F05 8021 05 H25 0079 Foot x 2 JO2 0069 05 Foot x 2 JO2 0070 05 Screw x 2 N30 3006 46 Screw x 2 N30 3008 46 Styrene foam cushion Protectwe bag H25 0103 04 H10 2534 02 DC cord ass y E30 1674 05 H01 2683 03 K W HOT 2684 03 T 30 3006 461 7 FINAL unlt Shoulder washer X45 1150 10 G Heat sink ass y disassernbly ...

Страница 23: ...grill cloth 605 0701 04 Speaker mounttng plate J21 2504 04 FINAL unit PC borad colla J31 0502 04 b N33 3006 45 Side escutcheon Control unit J32 0746 04 G13 0628 04 PLL shield cover Case B lower A01 0773 03 N33 3006 45 x 4 N30 3006 46 x 4 ...

Страница 24: ...LED PR5532K V 1 1 7 2 7 2 3 6 1 I Spacer collar J3 1 051 4 0 4 u s h knob K29 0734 04 ...

Страница 25: ...ore thdrl 3VI 3 Thc RF v o l t d g s s h r w r 111 I I I I I parerrtheses I I dre r e l e r e r i e valurs siricc rhry are sublecr t i cl ir qt accord rig I I I tIi u s t u n s 01 the probes 4 The AF voltages shown 111 square p a r e n t l c s s I I are v ii res w r h ari 111ou1 of 1 5 r11V Note 1 In rneasurlng the clrcult from the ANT term nal to the collector of Q 11 an unmodulated s g n a l o f...

Страница 26: ... lnput Impedance 1 MR or greater SSG damage Voltage range F S 1 rnV to 30V Connect MIC connector as shown In Fig 1 8 Frequency range 5 0 Hz to 1 0 kHz 7 A F Generator AG Frequency range 1 0 0 Hz to 1 0 kHz Output 0 5 mV to 1V DOWN 8 L neardetector Frequency range 1 4 4 MHz STBY 9 D rect onal coupler 10 Osc lloscope With hor zontallnput and hlgh sensltlvlty GND 11 Standard s gnalgenerator SSG OPEN ...

Страница 27: ...7 0 0 0 K type 1 4 5 0 0 0 W T type rn transmlt mode and apply a s gnal of 1 kHz 4 0 mV to the MIC term nal 3 Adjust VR3 for 5 0 kHz of deviat on 4 Adjust the AG output level for 3 5 kHz deviat on LUX1 1 Hel cal adjustment 1 Connect to a sweep generator 21 Unplug the LR connector any frequency 31 Adjust L1 12 and L3 to obta n the waveform shown below Adjust so the 1 4 4 0 K type marker comes to th...

Страница 28: ...11 transmlt mode and 21 Press the tone switch ln recelve mode and adjust adjust VR5 to oftaln 1 7 5 0 i 10 Hz VR5 to obtain 1 7 5 0 i 10 Hz 3 Set in transmit mode and adjust VR6 to obtain modulation wlthin about 0 7 sec DO TERMINAL 1 RX UNlT X 55 1270 XX I TC 2 TC 3 L 2 D O 0 L 2 3 L 2 4 L22 L 2 6 0 L 1 E 7 DiS PLAY UNlT X 5 4 1 5 1 0 1 0 f I L 3 TP1 OTPZ VR5 W T type LR CONNECTOR EEI TONE 1750Hz ...

Страница 29: ...VR3 clockwrse approx 60 from thls polnt and check that the voltage IS 5 0 6 OV and total current IS less than 3A Tester Power meter DC power supply ANT t 1DC TX FINAL unit Protection PLL UNIT X50 1650 10 ADJUSTMENT 5 1 IF adjustrnent RX mode 1 Set frequency to 148 9 9 5 MHz and connect RF VTVM to TP3 2 Adjust L1 1 L6 and L5 for maxlmum greater than 0 5V 2 Lock voltage adjustrnent RX mode 1 Set fre...

Страница 30: ...ADJUSTMENTS ...

Страница 31: ...y to 4 270 and the TX offset to 4 The beeper will stop when the M key IS pressed 8 SC key check a Press the SC key The radro will scan up cont nuouslyw h l ethe squelch IS closed b Open the squelch and the scan w l lstop momentar ly Scan will resume at approx 6 second Intervals C Scan should release when the C key or PTT IS pressed d The scan step w l l change from 1 0 kHz to 5 kHz by uslng the ST...

Страница 32: ...7 IS1555 Ot2 43 D4 45421 2 0 2 2 s c l l 5 l v 0 1 s 2Sc253B Zz b 011 2SA10151Yl OS7 11 2SC4581Bl x z 0 0 8 0 t l l D l 7 X Z 0 6 0 a 2 0 H A J S S W DI X Z 0 7 0 0 24 27 I P C I W B Y VOSB a tsD nOfY1 0 6 u l n 3 3 01 L114400 D 3 3 PR5532K 0 1 4 P V 5 5 3 2 K 0 s T L R 4 4 3 5 0 7 T L R 3 2 3 0 TLYBOII Voltage measure condition f 146 0 MHz Signal Control Common DC iine 1 In TX U N I T 1x54 7511 ...

Страница 33: ... 1270 10 0 MC Mic input TT Touch tone signal from control unit M B Memory back up t 5 2 BT Battery terminal back up batter es BB External battery back up B Common t 13 8 0 CB f 13 8 B f 13 8 DS Diode switch f 8 when TX ST Ptt switch signal f 8 to 0 when P l l ON NC open A 1 Top of AF VR control 0 8T f B i n T X SQ Arm of squelch VR BD To LED Busy Light SS Scan stop f 5 when squelch open S2 RF leve...

Страница 34: ...SCHEMATIC DIAGRAM K Y AY UNIT 1x54 ...

Страница 35: ... SOURCE VOLTAGE IN V DEVIATION 6 3 5 4 0 t 4 2r 3 n 0 2 1 1 10 100 MIC INPUT LEVEL IN rnV BLOCKING FREQUENCY DIFFERENCE IN kHz INTER MODULATION 20 40 60 80 100 120 UNDESIRED SIGNAL INPUT LEVEL IN dB af 20 kHz S LEVEL SENSITIVITY 5 a 4 E 4 3 z I 2 A V 1 i CARRIER FREQ 145 5 MHz MOD FREQ 1 MOD DEPTH 5 kHz 1 1 1 I 1 1 1 I 1 1 I I 1 1 1 1 1 10 100 ANTENNA INPUT VOLTAGE IN fiV ...

Страница 36: ... than 2 0 watts across 8 ohm load i10 dist W T type1 General Semiconductors MPU 1 ICs 18 Transistors 58 FETs 9 D odes 78 W 79 T Frequency range 144 000 to 145 995 MHz Frequency synthesizer Digital control phase locked VCO Mode FM iF3 Antenna impedance 50 ohms Power requirement 13 8V DC 15 Grounding Negative Operating temperature 20 C to t 50 C Current drain 0 4A in recelve mode with no Input s gna...

Страница 37: ...00 COMMUNICATIONS INC 11 11 West Walnut Street Compton Calltornla 90220 U S A TRImKENW000 COM UNICATIONS OmbH 1 D 6374 Stelnbact TS lndustr estrasse8A Wes Germany TRIO KENWOOO AUSTRALIA IPTV LTD 30 Whltlng Street Artarmon Sydney N S W Australia 2064 1981 1 Printed In Japan 051 0906 20 K W T 1000 ...

Страница 38: ...in receive mode with no input s gnal9A in HI transmtt mode Approx Less than 3 mA for memory back up from an external power supply through the BACK UP terminal Less than 2 mA for memory back up from battery 175 mm 6 7 8 wide 6 4 mm 2 1 2 Jhigh 220 mm 8 5 8 deep projections excluded 2 2 kg 4 84 Ibs approx Frequency tolerance Less than f20 X 20 C 5OoCI Spurlous radiat on HI Less than 60 dB LOW Less t...

Страница 39: ...I L J CONTROL UNIT X I 1 180 10 I am the original producer of the PDF version of this document ...

Страница 40: ...0 03 HOl 2751 03 H10 2501 03 H10 2534 12 H25 0049 03 H25 0079 04 H25 0103 04 H25 0106 04 JO2 0069 05 JO2 0070 05 J 19 1334 05 J21 0392 04 J21 2504 04 J31 0514 04 J32 0745 04 J32 0746 04 Descr pt on Knob bush H L Vinyle tie x 2 Main knob Knob IAF Knob SOL Push knob x 5 Square Push knob KEY M SEL Push knob HI LOW Screw x 4 angle Ground screw x 3 Plast c screw x 2 banery Spanner nut Flange nut x 4 an...

Страница 41: ...CK4581H102K CC45SL2H020C CC45CH 1H070D E04 0152 05 E06 0252 05 E08 0304 05 E11 0403 05 E23 0046 04 E23 0401 05 L A Power Module M57726 Equivalent Circuit Parts No FOl 0758 05 F20 0078 05 F29 0014 05 L34 1020 05 L34 0908 05 L34 0692 05 L34 0742 05 L34 0908 05 L34 0499 05 L33 0026 05 L40 1511 03 L34 0822 05 RC05GF2H 151J R12 4020 05 R12 0417 05 R12 4016 05 R12 0053 05 R92 0150 05 V30 1239 56 VO1 01 ...

Страница 42: ...995 MHz w T 3 K type only f 148 995 MHz 1 HI LOW sw tch LOW f 148 0 0 MHz K f 145 995 MHz W T 2 f 148995 MHz KI f 145995 MHz W T 3 f 148 000 MHz K f 145 995 MHz W T 4 HI LOW sw tch HI 5 HI LOW sw tch LOW f 144 000 MHz 1 Power supply votage 11 OV HI LOW swltch HI 2 HI LOW sw tch LOW 1 ANT term nal Open Power supply voltage 13 8V HI LOW sw tch HI f 148000 MHziKI f 145 995 MHz W TI 2 f 143 900 148 99...

Страница 43: ...MC MIC input TT Touch tone s gnal from control unit MB Memory back up t 5 2 BT Battery terminal back up batter es BB External battery back up B Common t 13 8 CGB Always 13 8 0 CB t 13 8 B 7 13 8 DS D ode switch 8 when TX ST Ptt switch signal t 8 to 0 when PTT ON NC open Top of AF VR control t 8 i n T X Arm of squelch VR To LED Busy Light Scan stop 5 when squelch open Transmit light RF level from f...

Страница 44: ......

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Страница 46: ... I S I I L 25CfWI5lY 0 3 6 25C253W 22 1 D O 0 3 2 5 1 3 0 A l G R xz own O t I 2 I 2141015111 01 1 2SC45BIB O 7 X Z 0 6 0 0 6 7 2 S C 2 2 4 0 1 t R I 0 2 0 t l A 4 3 6 6 l D I 1 2 0 7 0 0 Z S C I T 7 5 I E l 0 14 11 r P C 7 B a B H 0 0 VOSB 0 1 3 25A 96111 0 I D I 4 1 5 2 2 0 B 0 2 S t 4 9 6 111 D z I H I T T 4 0 x CI DER U N I T X 5 4 1 5 0 0 1 0 TR 7 8 5 0 1T WI 0 1 L B 1 4 0 9 0 1 1 TC4OOl BP 0...

Страница 47: ...onics Manuals Consumer Electronics Service Ops Manuals Available Pager Manuals Pager Service Programming Manuals Available Tektronix 7000 Series 60 Volume Plug In Manuals Set Amateur Radio Manuals Ham Radio Manuals by FTP Amateur Radio Manuals Ham Radio Manuals on CD Amateur Radio Manuals Large Collections on CD and DVD Thousands of Scanned Manuals Big Buck Distributing canned Manual on eBay Some ...

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