ALPHA 78_A_PA
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ALPHA 78-A-PA
PART DESCRIPTION PAR T # SCHEMATIC SYMBOL
BALL DRIVE (VERNIER FOR TUNE AND LOAD CAPS) MDX-X127
BLOWER 115V (COMPLETE ASSEMBLY) AHX-X013 BLOWER
BLOWER HOUSING (RIPLEY) BLX-X106
BLOWER MOTOR 115V (HOWARD #3-90-8507) BLX-X105 USE BOMAX # 301-6563
BLOWER SQUIRREL CAGE (HOWARD) BLX-X104
BOARD PWR SUPPLY/CONTROL-STUFFED ABX-X016 CB1
BOARD PWR SUPPLY/CONTROL-UNSTUFFED BCX-X113
BOARD QSK-STUFFED ABX-X019 CB3
BOARD QSK-UNSTUFFED BCX-X112
BOARD INPUT T/R RELAY CONTROL - STUFFED ABX-X017
BOARD INPUT T/R RELAY CONTROL - UNSTUFFED BCX-X115
BOARD ALC/WATTMETER-STUFFED ABX-X018 CB2
BOARD ALC/WATTMETER-UNSTUFFED BCX-X117
BOARD SWR TRIP WATTMETER, STUFFED ABX-X022
BOARD INPUT SWAMP RES PACK-STUFFED ABX-X021
BOARD INPUT SWAMP RES PACK-UNSTUFFED BCX-X120
BOARD SWITCH BOARD BCX-X116 CB25
BULB G.E. # 85 WEDGE BASE ILX-X107 I1-4
BULB SOCKET # 85 BULB ILX-X101
BULB COVER YELLOW ILX-X104
BULB COVER GREEN ILX-X108
CAPACITOR 18pF 1KV CDX-1800 C201
CAPACITOR .004uF 6KV C17
CAPACITOR .002uF 6KV (2 IN PARALLEL) CDX-2021 C17 (UNIT)
CAPACITOR .002uF 1KV CDX-2020 C1,C2,C41-C44,C46
CAPACITOR .002uF 6KV CDX-2021
CAPACITOR .002uF 3KV CDX-2022 C3-C6
CAPACITOR .02uF 1KV CDX-2030-C C9,C14-C16
CAPACITOR .02uF C302
CAPACITOR .01uF 50V CKD-1030 C302 (BRD)
CAPACITOR 5-11pF 1KV TRIMMER CTX-1100 C202
CAPACITOR 25pF 8KV CDX-2500-A C23,C25
CAPACITOR 75pF 6KV CDX-7500-A
CAPACITOR 9.5pF 8KV CDX-95G0-A C37,C38-(2 IN SERIES)
CAPACITOR 100pF 5KV (DOORKNOB) [10meter MOD.] CDX-1010 C34
Use RF Parts p/n 580100-7 (HT50V101, 100 pf 7.5kv)
CAPACITOR 100pF SILVER MICA CMX-1010 C210
CAPACITOR 10uF 25V AXIAL CEX-1060 C206
CAPACITOR 210uF 450V RADIAL CEX-2170 C101-C106
CAPACITOR 470uF 50V AXIAL CEX-4772 C108
CAPACITOR .01uF 50V CKD-1030 C8,C11-C13,C26,C28,C31,C33,C35-C38,C45,C47
C107,204,C205,C207,C208,C301,C304-C306
CAPACITOR 1500pF FEEDTHROUGH CKX-1521 C48
CAPACITOR 22uF 16V TANT CLX-2260 C109
CAPACITOR .47uF 35V TANT CLX-4740 C303
CAPACITOR 27pF CMX-2700 C209
CAPACITOR 300pF CMX-3010
CAPACITOR 8.7-105pF 1KV AIR VAR. CTX-1010-A C27,C29,C30,C32
CAPACITOR 7.5-26pF 1.5KV AIR VAR. CTX-2600-A C20,C21,C22,C24
CAPACITOR 30-270pF 2KV (TUNE) CTX-2710 C18
CAPACITOR 32-820pF 2KV (LOAD) CTX-8210 C19
CAPACITOR 32-820pF 2KV AIR VAR. (LOAD W/BALL DRV) IHA-1007
CONNECTOR: HV AND FILAMENT (FEMALE 15 PIN) JFX-X106
Molex p/n 50-84-2150-P (15 pin, .084")
CONNECTOR: PRIMARY AC (MALE 9 PIN) JMX-X111
COVER (WRAPPER) 3 HOLE (BROWN) MSX-X017
COVER (WRAPPER) 3 HOLE (GREY) MSX-X016
CROWBAR HV (SAFETY) MSX-X020
DIAL PLATE MSX-X059
DIODE 1N4004 MOTOROLA DRX-X102 D1-D4,D107-D109,D301-306,D308-D309
ALPHA 78_A_PA
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DIODE HV RECTIFIER 3KV 1/2A (RCC1733) DRX-X105 D101-D104
DIODE 1N4148 DRX-X107 D5-D8,D201-D203
DIODE 1N5404 DRX-X108
DIODE 1N4722 D106
DIODE 1N5404 DRX-X108 D106 (BRD)
DIODE ZENER 1N4733 (1N4746) 5.1V DZX-X101 D110,D307
DIODE ZENER 1N4757A 51V DZX-X104 D105
FUSE 15A 250V CERAMIC (Radio Shack p/n 270-1040A) FSX-X104 F1,F2
FUSE 1 1/4A GLASS SLOW BLOW FSX-X112 F3
FUSE HOLDER (for AC fuses on rear of chassis) FHX-X102
FUSE BLOCK (clip-in step-start fuse holder) FHX-X103
KNOB BANDSWITCH SKX-X103
KNOB INSERT FOR (SKX-X102) SKX-X108
KNOB TUNE/LOAD KK W/O INSERT SKX-X102
INDUCTOR A/TANK COIL;PLATED ACX-X114 L4
INDUCTOR A/PLATE CHOKE ACX-X118 L1
INDUCTOR L TOROID ACX-X121 L6
INDUCTOR TOROID ACX-X123 L5
INDUCTOR (CHOKE) 15uH L005 LCX-X101 L2
INDUCTOR (CHOKE) 15uH LCX-X102 L3,L7
INDUCTOR (CHOKE) 1000uH TYPE IM-2 LCX-X104 L202
INDUCTOR (CHOKE) 1mH SAFETY LCX-X106 L8,L9
INPUT MATCHING XFMR / 76,78 ACX-X133 T2
JUMPER AC HLX-X117
LOW DRIVE MOD, RES PACK-STUFFED * * ABX-X021
* * USE RFF-E471-C FOR LOW DRIVE MOD
MANUAL ZMX-X105
METER MULTIMETER L SERIES MPX-X103 M1
METER AMMETER L SERIES MPX-X104 M2
NUTS 1/4-20 NYL HEX NUT HNN-7101
NUTS 2-56 SS HEX NUT HNS-1001
NUTS 4-40 SS HEX NUT, LG PATT. HNS-3004
NUTS 6-32 SS HEX NUT HNS-4005
NUTS 8-32 SS HEX NUT HNS-5006
NUTS 6-32 SS HEX NUT, SM PATT. HNS-5013
NUTS 10-32 SS HEX NUT, SM PATT HNS-6008
PANEL, FRONT / 78 REV.D MSX-X005
PARASITIC CHOKE/CAP 2.0 (3RD TUBE) ACX-X130
PARASITIC CHOKE/CAP 1.5 (2 TUBE) ACX-X131
RELAY POWER ON (GUARDIAN 1390-2C-120A) KAX-X104 K1
RELAY STEP-START (GUARDIAN 1395-2C-24D) KDX-X107 K2
RELAY T/R ENAB (POT.&BRUM.R10-E2-Y2-V700) KDX-X109 K10
RELAY PLATE VOLTAGE (PRD11Y0-24) KDX-X111 K3
RELAY IP OVERCURRENT (MAG. W178RE1-24) KDX-X115 K7
RELAY T/R REED (MAGNECRAFT W102RMX-7) KDX-X116 K4
Use GigaVac replacement instead of the Magnecraft for KDX-X116
RELAY T/R VACUUM (ITT RJ1A / KILOVAC HC-1) KVX-X105 K5
RELAY TIME DELAY REED (LG101-1-5) KXX-X101 K6
RELAY EXCITER KEYING REED (LG101-1-24) KXX-X102 K11
RELAY RF SECTION CW / SSB (OMRON LY2) KDX-X107 K8,K9
RESISTOR 10 OHM 1/2W 5% CARBON RFC-C100-C R116
Use RFW-G100-C (10 ohm/2w WW) or 2x RFC-C47A-C (4.7 ohm 1/2w) R116
in series to replace R116 when burned.
RESISTOR 1MEG OHM 1/2W 1% METAL RFC-C1004-A R107-R109
RESISTOR 22 OHM 1/2W 5% CARBON RFC-C220-C R201,R202
RESISTOR 1.8K OHM R203
RESISTOR 3.3K OHM 1/4W 5% RFF-B332-C R203 (BRD)
RESISTOR 2.2K OHM 1/2W 5% CARBON RFC-C222-C R124
RESISTOR 2.2K OHM 1W 5% CARBON RFC-D222-D R6
RESISTOR 12K OHM 2W 10% CARBON RFC-E123-D R5
RESISTOR 120K OHM 2W 5% (2 IN PARALLEL) RFC-E124-C R101-R106
For repairs use two 150K, 2W in parallel, must replace all RFO-E154-D
ALPHA 78_A_PA
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RESISTOR 3.3K OHM 2W 5% RFM-F3301-B R112
RESISTOR 1.3K OHM 1/4W 5% R113
RESISTOR 1.5K OHM 1/4W 5% RFF-B152-C R113 (BRD)
RESISTOR 750 OHM 2W 10% RFC-E751-D R3
RESISTOR 100 OHM 1/4W 5% FILM RFF-B101-C R301,R302
RESISTOR 1K OHM 1/4W 5% CARBON RFF-B102-C R123,R308,R315
RESISTOR 10K OHM 1/4W 5% RFF-B103-C R306,R307,R310
RESISTOR 100K OHM 1/4W 5% RFF-B104-C R304,R305,R311-R313
RESISTOR 12K OHM 1/4W 5% CARBON RFF-B123-C R121,R122,R204,R206
RESISTOR 180K OHM 1/4W 5% CARBON RFF-B184-C R110,R207
RESISTOR 2.7K OHM 1/4W 5% CARBON RFF-B272-C R115
RESISTOR 390 OHM 1/4W 5% CARBON RFF-B391-C R303
RESISTOR 3.9MEG OHM 1/4W 5% RFF-B395-C R120
RESISTOR 47 OHM 1/4W 5% CARBON RFF-B470-C R114
RESISTOR 470 1/4W 5% CARBON RFF-B471-C R208
RESISTOR 4.7K OHM 1/4W 5% CARBON RFF-B472-C R119,R125,R309
RESISTOR 10K OHM 8W WIREWOUND RFW-L103 R4
RESISTOR 10 OHM 12W WIREWOUND RFW-N100 R1,R2
RESISTOR 25 OHM 25W WIREWOUND RFW-R250 R111
RESISTOR 5K OHM (TRIMMER POT.) RKX-5200 R205,R209
SCREW FRONT PANEL (CNTR 2) 6-32 X 1/2PFSS HSS-4034
SCREW FRONT PANEL 6-32 X 5/16 PFSS HSS-4022
SCREW COVER (TOP 4) COUNTERSUNK HSS-4022
SCREW COVER (SIDE/BACK 12) REGULAR HSS-4016
SCREW 2-56 X 1/4 PP STAINLESS HSB-1001
SCREW 10-24 X 1 1/4 NYL HEX HD HSN-6001
SCREW 1/4-20 X 3 NYL CAP SCR HSN-7003
SCREW 2-56 X 3/16 PPSS HSS-1002
SCREW 4-40 X 1/4 PPSS HSS-3016
SCREW 4-40 X 5/8 PPSS HSS-3034
SCREW 6-32 X 1/4 PFSS HSS-4010
SCREW 6-32 X 1/4 PPSS HSS-4013
SCREW 6-32 X 5/16 PPSS HSS-4019
SCREW 6-32 X 3/8 PPSS HSS-4025
SCREW 6-32 X 3/8 PFSS HSS-4028
SCREW 6-32 X 1/2 PPSS HSS-4031
SCREW 6-32 X 5/8 PPSS HSS-4039
SCREW 6-32 X 3/4 PPSS HSS-4045
SCREW 6-32 X 7/8 PPSS HSS-4051
SCREW 6-32 X 1 PPSS HSS-4054
SCREW 6-32 X 1 1/2 PPSS HSS-4063
SCREW 6-32 X 2 PPSS HSS-4066
SCREW 6-32 X 2 1/4 PPSS HSS-4072
SCREW 8-32 x 3/4 PPSS HSS-5051
SCREW 10-32 X 3/8 PPSS HSS-6007
SCREW 10-32 X 3/8 PFSS HSS-6010
SCREW 10-32 X 1/2 PPSS HSS-6022
SCREW 10-24 X 3/4 PPSS HSS-6034
SCREW 10-32 X 3/4 PPSS HSS-6037
SCREW 1/4-20 X 3/4 PPSS HSS-7003
SWITCH MICROSWITCH (INTERLOCK) SIX-X101 S5
SWITCH, PUSHBUTTON (8 used in amp) SPX-X101 S2,S3,S4
SWITCH, PUSHBUTTON CAP, LARGE ORANGE (ON/SSB) SPX-X103
SWITCH, PUSHBUTTON CAP, LARGE GREEN (OFF/CW) SPX-X104
SWITCH, PUSHBUTTON CAP, NARROW ORANGE (METER) SPX-X105
SWITCH JV7 INDEX ASSEMBLY SRX-X105
SWITCH 120-250V AC 2-5A STX-X104
SWITCH BANDSWITCH AHX-X202 S1
SWITCH BANDSWITCH WAFER JV8 (Electroswitch E4C-8) SWX-X103 S1-A-B-C (first 3 wafers)
SWITCH BANDSWITCH JV18 (?) SWX-X104
SWITCH BANDSWITCH WAFER 18 POSITION (se below!!) SWX-X111 S1-D (the rear wafer)
Must use SWX-X111 that has ALL fingers still on the rotor,
then trim a few fingers off to match original rotor.
TRANSFORMER FILAMENT LV (?) TPX-X103
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