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Heathkit Schematic and Manual Archive

Heathkit LogoThis is an archive based on a page that used to be at http://www.circuitarchive.co.uk/heath.htm. It has been reassembled from my copy (saved when the site was live) together with files retrieved from http://web.archive.org and other resources. Hundreds of other files have been kindly contributed over the years too.

The report also found that nearly a quarter of people use the same password for every site they are signed up to.
供给侧结构性改革初见成效;
10) I often make a fuss about unimportant things 0 1 2 3 4

This has happened elsewhere.
有专门的机器将氦气打入制作泡沫的溶液中。

If you have anything to add please email paul (at) vintage-radio (dot) info.

TitleDescriptionFile TypeSize
309-BR.F. Probe
Diagram and schematic
 pdf file icon108 KB
309-CR.F. Probe
Description, diagram and schematic
 pdf file icon287 KB
336High Voltage Probe
Assembly
 pdf file icon1.1 MB
337-BDemodulator Probe
Diagram and schematic
 pdf file icon113 KB
337-CDemodulator Probe
Description, diagram and schematic
 pdf file icon1.8 MB
338-BPeak-To-Peak Voltage Probe
Diagram and schematic
 pdf file icon127 KB
342Low Capacity Probe
Description, diagram and schematic
 pdf file icon1.9 MB
A-7B and A-7CAudio Amplifiers
Schematic and specifications
 pdf file icon748 KB
A-7EAudio Amplifier
Schematic only
 pdf file icon268 KB
A-9AAudio Amplifier
Schematic and specifications
 pdf file icon695 KB
A-9C20W Audio Amplifier-Preamplifier
Schematic only
 pdf file icon998 KB
AA-1Audio Analyser
Schematic only
 pdf file icon438 KB
AA-1314W Audio Amplifier
Schematic only
 pdf file icon1.1 MB
AA-14Solid State Stereo Amplifier
Schematic only
 pdf file icon811 KB
AA-21Transistor Stereo Amplifier
Schematic only
 pdf file icon355 KB
AA-30Stereo Amplifier
Schematic only
 pdf file icon216 KB
AA-32Stereo Amplifier
Schematic only
 pdf file icon1.2 MB
AA-100Stereo Amplifier
Partial manual
 pdf file icon8.5 MB
AA-12180W Stereo Amplifier
Schematic only
 pdf file icon4.1 MB
AA-16114W Audio Amplifier
Schematic only
 pdf file icon226 KB
AA-181Mono Amplifier
Complete manual
 pdf file icon1.3 MB
AA-1600Power Amplifier
Schematic only
 pdf file icon38 KB
AA-1640Power Amplifier, Preamplifier and Output Meter
Schematic only
 pdf file icon208 KB
AC-1Antenna Coupler
Schematic and specifications
 pdf file icon417 KB
AD-110Hi-Fidelity Cassette Tape Deck
Schematic and tape transport parts pictorial
 pdf file icon1.6 MB
AD-1305Audio Equalizer
Schematic only
 pdf file icon420 KB
AF-1Audio Frequency Meter
Schematic and specifications
 pdf file icon821 KB
AFM-1AM/FM Tuner
Schematic, parts list and AM audio response - poor quality
 pdf file icon1.7 MB
AG-8Audio Generator
Schematic and specifications
 pdf file icon617 KB
AG-9AAudio Generator
Complete Manual
 pdf file icon1.7 MB
AG-9UAudio Generator
Schematic only
 pdf file icon237 KB
AG-10Sine-Square Generator
Complete Manual
 pdf file icon22.6 MB
AJ-10AM/FM Stereo Tuner
Schematic only
 pdf file icon269 KB
AJ-14Solid State FM Stereo Tuner
Schematic only
 pdf file icon1.7 MB
AJ-15FM-FM Stereo Solid State Tuner
Schematic only
 pdf file icon631 KB
AJ-41Stereo Tuner
Partial manual
 pdf file icon24.7 MB
AJ-63FM Tuner
Schematic only
 pdf file icon1.0 MB
AJ-1510ADigital FM Tuner
Complete manual
 zip file icon11.6 MB
AJ-1600AM/FM Stereo Digital Tuner
Schematic and semiconductor identification charts
 pdf file icon657 KB
AM-1Antenna Impedance Meter
Complete Manual
 pdf file icon594 KB
AM-2Reflected Power Meter
Complete Manual
 pdf file icon909 KB
AN-10Mixed Lows Stereo Crossover
Schematic and circuit description
 pdf file icon316 KB
AO-1Audio Oscillator
Schematic and specifications
 pdf file icon900 KB
AR-2Communications Receiver
Complete Manual
 pdf file icon1.4 MB
AR-3Communications Receiver
Complete Manual
 pdf file icon4.4 MB
AR-14FM Receiver
Partial manual
 pdf file icon545 KB
AR-15AM/FM Stereo Solid State Receiver
Schematic only
 pdf file icon857 KB
AR-27Solid State FM Receiver
Schematic only
 pdf file icon1.8 MB
AR-29AM/FM Stereo Receiver
Schematic only
 pdf file icon532 KB
AS-2AAcoustic Suspension Speaker System
Complete manual
 pdf file icon7.0 MB
AS-13633-Way Bookshelf Speaker System
Schematic and circuit description
 pdf file icon458 KB
AT-1Amateur Transmitter
Complete Manual
 pdf file icon1.2 MB
AV-1AC Voltmeter
Complete Manual
 pdf file icon781 KB
AV-2AC Voltmeter
Partial manual - poor quality
 pdf file icon7.7 MB
AV-3Vacuum Tube Millivolt Meter
Schematic only
 pdf file icon218 KB
AV-3UValve Millivolt Meter
Complete manual
 pdf file icon9.3 MB
AW-1Audio Wattmeter
Schematic and specifications
 pdf file icon671 KB
AW-1UAudio Wattmeter
Complete manual
 pdf file icon23.4 MB
B-1Balun Coil
Complete Manual
 pdf file icon752 KB
BC-1ABroadband AM Tuner
Schematic only
 pdf file icon344 KB
BE-4Battery Eliminator
Schematic and specifications
 pdf file icon893 KB
BE-5Battery Eliminator
Schematic only
 pdf file icon142 KB
BG-1Bar Generator
Schematic and specifications
 pdf file icon639 KB
BR-1Broadcast Receiver
Schematic only
 pdf file icon566 KB
BR-2Broadcast Receiver
Schematic and specifications
 pdf file icon949 KB
BT-1Battery Tester
Complete Manual
 pdf file icon274 KB
C-1Unknown
Schematic only
 pdf file icon36 KB
C-2Condenser Checker
Complete Manual
 pdf file icon1.2 MB
C-3Condenser Checker
Complete Manual
 pdf file icon5.1 MB
C-3UResistance and Capacitance Bridge
Schematic and specifications
 pdf file icon5.0 MB
CA-1Conelrad Alarm
Complete Manual
 pdf file icon2.3 MB
CC-1Tube Checker
Schematic only
 pdf file icon198 KB
CI-1Charge Indicator
Schematic only
 pdf file icon121 KB
CI-1020Timing Light
Schematic only
 pdf file icon280 KB
CI-1040Deluxe Timing Light
Schematic and PCB only
 pdf file icon49 KB
CI-1078Digital MPH and MPG Meter
Schematic only
 pdf file icon1.4 MB
CI-1080Exhaust Gas Analyzer
Schematic, specifications adjustments and operation
 pdf file icon3.7 MB
CM-1Direct Reading Capacity Meter
Complete manual
 pdf file icon758 KB
CO-1Code Practice Oscillator
Complete Manual
 pdf file icon1.5 MB
CO-1015Solid State Ignition Analyzer
Schematic only
 pdf file icon700 KB
CO-2600Ignition Alalyzer
Schematic only - poor quality
 pdf file icon329 KB
CR-1Crystal Receiver
Schematic only
 pdf file icon21 KB
CR-1000A & CRA-1000-1FM Stereo Tuner & Amplifier
Schematic only
 pdf file icon1.8 MB
CS-1Condenser Subsitution Box
Complete Manual
 pdf file icon604 KB
CT-1Capaci-Tester
Complete manual
 pdf file icon10.7 MB
DF-2Transistor Radio Navigator
Schematic only
 pdf file icon413 KB
DX-20Transmitter
Complete Manual
 pdf file icon5.4 MB
DX-35Transmitter
Complete Manual
 pdf file icon766 KB
DX-40Transmitter
Complete Manual
 pdf file icon2.2 MB
DX-40UTransmitter
Schematic only
 pdf file icon629 KB
DX-60Transmitter
Complete Manual
 pdf file icon7.3 MB
DX-60BTransmitter
Complete manual
 zip file icon8.2 MB
DX-100Transmitter
Complete Manual
 zip file icon6.3 MB
EA-212 Watt Amplifier
Schematic only
 pdf file icon403 KB
EA-3High Fidelity 14 Watt Amplifier
Schematic only
 pdf file icon446 KB
EC-1Analog Computer
Operation Manual and Schematic
 zip file icon1.3 MB
EF-1Power Supply
Schematic only
 pdf file icon42 KB
EK-1Educational Series - Basic Electricity
Complete Manual
 pdf file icon57.4 MB
EK-2AEducational Series - Basic Radio Part 1
Complete Manual
 pdf file icon66.6 MB
EK-2BEducational Series - Basic Radio Part 2
Complete Manual
 pdf file icon84.4 MB
EK-3Educational Series - Basic Transistors
Complete Manual
 pdf file icon75.7 MB
ES-201DC Amplifier (from 1956 ES-400 analog computer)
Schematic only
 pdf file icon96 KB
ES-600Function Generator for Analog Computer
Complete manual
 pdf file icon1.8 MB
ET-1000 / ETW-1000Circuit Design Trainer
Complete manual
 pdf file icon8.2 MB
ET-3100Electronic Design Experimenter Signal Generator
Schematic and semiconductor identification chart
 pdf file icon1.8 MB
ET-3200Digital Design Experimenter
Complete manual
 pdf file icon6.6 MB
ET-3600Analog Trainer
Complete Manual
 zip file icon15.5 MB
ET/ETW-4200Laser Trainer
Complete manual
 zip file icon2.6 MB
ETA-4200Laser Receiver
Complete manual
 pdf file icon671 KB
ETW-3567Accessory Backpack
Schematic only
 pdf file icon255 KB
ETW-3800Microprocessor Trainer
4 Complete(?) Manuals
 zip file icon17.0 MB
EU-14AAC Utility Amplifier
Schematic and specifications
 pdf file icon92 KB
EU-70ADual Trace Oscilloscope
Schematic only
 pdf file icon3.1 MB
EU-800-HBComparator/V-F Card
Schematic only
 pdf file icon301 KB
EU-805-11Input Comparator Module
Schematic only - poor quality
 pdf file icon99 KB
EU-900-NAOperational Amplifier Card
Schematic only
 pdf file icon54 KB
EUP-26Multimeter
Schematic, specifications and switch
 pdf file icon2.0 MB
EUW-15Science Series Universal Power Supply
Schematic and specifications
 pdf file icon121 KB
EUW-16Science Series Voltage Reference Source
Schematic and specifications
 pdf file icon84 KB
EUW-17Science Series Transistor Power Supply
Schematic and specifications
 pdf file icon90 KB
EUW-19AScience Series Operational Amplifier System
Schematic and specifications
 pdf file icon236 KB
EUW-20AScience Series Servo Recorder
Schematic and specifications
 pdf file icon163 KB
EUW-24Science Series VTVM
Schematic and specifications
 pdf file icon223 KB
EUW-25Science Series DC Coupled Oscilloscope
Schematic and specifications
 pdf file icon303 KB
EUW-27Science Series Sine-Square Wave Generator
Schematic and specifications
 pdf file icon149 KB
FD-1-6 / FD-1-12Fuel Vapour Detector
Schematic only
 pdf file icon106 KB
FM-2FM Tuner
Schematic only
 pdf file icon266 KB
FM-3AFM Tuner
Complete manual
 pdf file icon3.1 MB
FM-4FM Tuner
Schematic only
 pdf file icon193 KB
FM-4UFM Tuner
Schematic only
 pdf file icon521 KB
FMO-1FM Test Oscillator
Partial Manual
 pdf file icon4.3 MB
G-5Signal Generator
Partial Manual
 pdf file icon1.5 MB
GC-1A"Mohican" General Coverage Receiver
Complete manual
 pdf file icon6.7 MB
GC-1000-HMost Accurate Clock
Complete manual
 zip file icon24.2 MB
GC-1005Electronic Clock
Complete manual
 pdf file icon11.8 MB
GC-1092DTime Calendar Clock
Schematic only
 pdf file icon742 KB
GC-1093Digital Car Clock
Schematic only
 pdf file icon669 KB
GC-1107Digital Alarm Clock
Schematic only
 pdf file icon507 KB
GC-1195 / GC-1197Digital Floor Clock / Digital Shelf Clock
Complete manual
 pdf file icon6.0 MB
GC-1415Quartz Clock/Timer
Schematic only
 pdf file icon667 KB
GCA-1000-1RS232C Output for GC-1000
Complete manual
 pdf file icon2.2 MB
GCA-1000-51 and -52Antenna
Partial manual
 pdf file icon498 KB
GCA-1195-1Chimes for GC-1195 and GC-1197 clocks
Complete manual (now with schematic)
 zip file icon7.1 MB
GD-1AGrid Dip Meter
Complete Manual
 pdf file icon634 KB
GD-1BGrid Dip Meter
Complete Manual
 pdf file icon1.2 MB
GD-39Ultrasonic Intrusion Alarm
Schematic only
 pdf file icon418 KB
GD-48Metal Locator
Schematic only
 pdf file icon849 KB
GD-49The Informer Ultrasonic Intrusion Alarm
Complete manual
 pdf file icon5.3 MB
GD-69Thumb Tach
Schematic only
 pdf file icon270 KB
GD-125Q Multiplier
Complete manual
 pdf file icon9.8 MB
GD-600Photoelectric Light Switch
Schematic only
 pdf file icon200 KB
GD-973SCR Speed Control
Schematic only
 pdf file icon82 KB
GD-1018Light Dimmer
Schematic only
 pdf file icon314 KB
GD-1024Telephone Amplifier
Schematic only
 pdf file icon236 KB
GD-1026Emergency Strobe Light
Schematic and PCB only
 pdf file icon38 KB
GD-1150Ultrasonic Cleaner
Partial manual
 pdf file icon712 KB
GD-1157Auto Intrusion Alarm
Schematic only
 pdf file icon501 KB
GD-1183Freezer Failure Alarm
Schematic only
 pdf file icon148 KB
GD-1186Digital Scale
Schematic only
 pdf file icon3.4 MB
GD-1246ARechargeable Lamp
Schematic only
 pdf file icon228 KB
GD-1295Smart Outlet Box
Schematic only
 pdf file icon310 KB
GD-1530RS-232C to BSR X10 Interface
Complete manual
 pdf file icon4.3 MB
GD-1701Flood Alarm
Schematic only
 pdf file icon601 KB
GD-1776Programmable Home Heating Control
Schematic and circuit description
 pdf file icon179 KB
GDA-19-2Digital 5 Proportional Receiver
Schematic only - incomplete?
 pdf file icon1.4 MB
GDA-19-42Subminiature Digital Proportional Servo
Schematic only
 pdf file icon458 KB
GDA-57-13-Channel RC Transmitter
Schematic only
 pdf file icon1.6 MB
GDA-57-2 / GDA-19-43-Channel RC Receiver & Servo
Schematic only
 pdf file icon1.7 MB
GDA-206Servo Simulator?
Schematic only
 pdf file icon329 KB
GDA-405-28-Channel Digital Proportional Receiver
Schematic only - poor quality
 pdf file icon186 KB
GDA-505-D5-channel Digital Proportional R/C Transmitter
Schematic only
 pdf file icon3.0 MB
GDA-1205-28-Channer Modular R/C Receiver
Schematic only
 pdf file icon1.2 MB
GDA-1205-4 / GDA-1205-5R/C Servo
Schematic only
 pdf file icon260 KB
GDA-1205-D8-channel R/C Transmitter
Schematic only
 pdf file icon3.0 MB
GDA-3209-1Deluxe Garage Door Opener
Schematic only
 pdf file icon953 KB
GH-12AMicrophone
Complete Manual
 pdf file icon997 KB
GP-11Vibrator Power Supply
Partial Manual
 pdf file icon616 KB
GR-24AM Portable Transistor Radio
Schematic only
 pdf file icon80 KB
GR-2525" Color Television
Schematic only
 pdf file icon848 KB
GR-53AColour Television
Schematic only
 zip file icon1.2 MB
GR-54Deluxe SWL Receiver
Partial Manual
 pdf file icon3.8 MB
GR-61FM (only) Portable Radio
Complete Manual
 pdf file icon26.2 MB
GR-64Shortwave Receiver
Partial Manual
 pdf file icon2.4 MB
GR-78General Coverage Receiver
Partial manual - poor quality
 pdf file icon5.3 MB
GR-81Economy SWL Radio
Partial manual
 pdf file icon1014 KB
GR-88VHF-FM Monitor Receiver
Schematic only
 pdf file icon679 KB
GR-91General Coverage Receiver
Complete manual
 pdf file icon3.8 MB
GR-98VHF Aircraft Monitor Receiver
Schematic only
 pdf file icon1.6 MB
GR-110VHF Scanning Monitor
Schematic only
 pdf file icon338 KB
GR-151APortable Transistor Radio
Schematic only
 pdf file icon55 KB
GR-151BPortable Transistor Radio
Schematic only
 pdf file icon241 KB
GRA-88-1AC Power Supply
Schematic only
 pdf file icon53 KB
GRA-180Color Television
Schematic and specifications
 pdf file icon4.0 MB
GRS-65AHand-Held Transceiver
Schematic only - poor quality
 pdf file icon270 KB
GT-1217Electronic Directory/Dialer
Schematic only
 pdf file icon994 KB
GW-30Hand Held Citizens Band Transceiver
Schematic only
 pdf file icon375 KB
GW-31Hand Held Citizens Band Transceiver
Schematic only - poor quality
 pdf file icon177 KB
GW-31AHand Held Citizens Band Transceiver
Schematic only
 pdf file icon171 KB
H8-1 / H8-38K Static Memory
Schematic only
 pdf file icon556 KB
H19Video Terminal
Schematic and PCB only
 pdf file icon2.2 MB
HA-10Warrior Linear Amplifier
Complete Manual
 pdf file icon2.3 MB
HA-14SSB Linear Amplifier
Complete Manual
 pdf file icon2.0 MB
HA-206-Meter Linear Amplifier
Complete Manual
 pdf file icon7.1 MB
HA-2012-Meter Amplifier
Complete Manual
 zip file icon8.0 MB
HA-2022-Meter FM Amplifier
Schematic only
 pdf file icon328 KB
HA-202A2-Meter FM Amplifier
Schematic only
 pdf file icon2.1 MB
HD-1Harmonic Distortion Meter
Schematic only
 pdf file icon537 KB
HD-10Electronic Keyer
Complete Manual
 pdf file icon41.2 MB
HD-11Q Multiplier
Schematic only
 pdf file icon208 KB
HD-15Hybrid Phone Patch
Partial Manual
 zip file icon2.3 MB
HD-16Code Oscillator
Schematic and Specifications only
 pdf file icon395 KB
HD-19Hybrid Phone Patch
Schematic only
 pdf file icon205 KB
HD-20Crystal Calibrator
Partial Manual
 pdf file icon528 KB
HD-1234Coaxial Switch
Complete manual
 pdf file icon1.2 MB
HD-1250Solid-State Dip Meter
Complete Manual
 pdf file icon7.7 MB
HD-1410Electronic Keyer
Complete Manual
 pdf file icon4.4 MB
HD-1416Code Oscillator
Schematic only
 pdf file icon666 KB
HD-1418Active Audio Filter
Complete Manual
 zip file icon5.0 MB
HD-1420VLF Converter
Partial Manual
 pdf file icon1.1 MB
HD-1422Antenna Noise Bridge
Partial Manual
 pdf file icon2.7 MB
HD-1424Active Antenna
Partial Manual
 pdf file icon1.5 MB
HD-1426Relative Field Strength Meter
Complete Manual
 pdf file icon519 KB
HD-1481Remote Coax Switch
Complete Manual
 pdf file icon7.6 MB
HD-1515Phone Patch
Schematic only
 pdf file icon185 KB
HD-1530Touch-Tone Decoder
Schematic and circuit description
 pdf file icon2.4 MB
HD-1982Micoder
Schematic only
 pdf file icon1.0 MB
HD-1984Micoder II
Schematic only
 pdf file icon399 KB
HD-1986Microlizer
Schematic only
 pdf file icon600 KB
HD-3006Crossfire
Schematic only
 pdf file icon190 KB
HD-4040Terminal Node Controller
Schematic only
 pdf file icon2.5 MB
HD/HDW-1780IntelliRotor
Schematic only
 pdf file icon761 KB
HDA-4040-1TNC Status Indicator
Schematic only
 pdf file icon328 KB
HDP-21AMicrophone
Instructions
 pdf file icon2.7 MB
HFT-9Antenna Tuner
Schematic and circuit description
 pdf file icon494 KB
HFW-1Television Alignment Generator
Complete manual - poor quality
 pdf file icon6.9 MB
HG-10VFO
Schematic and specifications
 pdf file icon1.7 MB
HG-10BAmateur VFO
Complete Manual
 pdf file icon6.8 MB
HK-21Pocket Packet
Schematic only
 pdf file icon1.8 MB
HL-22002KW Linear Amplifier
Schematic only
 pdf file icon2.4 MB
HM-9QRP Wattmeter
Schematic only
 pdf file icon305 KB
HM-10ATunnel Dipper
Complete manual
 pdf file icon4.9 MB
HM-11Reflected Power and Standing Wave Ratio Bridge
Complete Manual
 pdf file icon2.3 MB
HM-15Reflected Power Meter and SWR Bridge
Complete Manual
 pdf file icon1.7 MB
HM-102RF Power Meter
Complete Manual
 pdf file icon303 KB
HM-2102VHF Wattmeter
Complete manual
 pdf file icon1.3 MB
HM-2103RF Load Wattmeter
Complete Manual
 pdf file icon2.4 MB
HM-2140HF Dual Wattmeter
Complete manual
 pdf file icon2.6 MB
HM-2140-AHF Dual Wattmeter
Schematic only
 zip file icon259 KB
HM-2141VHF Dual Wattmeter
Partial manual
 pdf file icon1.1 MB
HN-31"Cantenna" Dummy RF Load
Complete Manual
 pdf file icon1.2 MB
HO-10Audio Analyzer Monitor Scope
Partial manual
 pdf file icon1.8 MB
HO-10EAudio Analyzer Monitor Scope
Schematic and specifications
 pdf file icon172 KB
HO-13Ham-Scan Panoramic Adaptor
Partial Manual
 pdf file icon1.6 MB
HO-5404Station Monitor
Schematic only - poor quality
 pdf file icon1.5 MB
HOA-5404-1Pan Adaptor Module
Schematic only
 pdf file icon1.1 MB
HP-13ATransistorized DC Power Supply
Partial Manual
 zip file icon2.1 MB
HP-14Transistorized Mobile Power Supply
Complete Manual
 pdf file icon21.1 MB
HP-20Utility Power Supply
Schematic and Specifications only
 zip file icon105 KB
HP-23AC Power Supply
Schematic only
 pdf file icon112 KB
HP-23AC Power Supply
Partial Manual
 zip file icon233 KB
HP-23AAC Power Supply
Complete Manual
 zip file icon1.6 MB
HP-23BAC Power Supply
Partial Manual
 pdf file icon1.2 MB
HP-23CAC Power Supply
Partial Manual (no schematic)
 pdf file icon268 KB
HP-24AC Power Supply
Schematic only
 pdf file icon165 KB
HP-1144AC Power Supply
Schematic only
 pdf file icon546 KB
HP-1144AAC Power Supply
Partial Manual
 zip file icon762 KB
HR-10BBasic Amateur Band Receiver
Complete Manual
 zip file icon7.4 MB
HR-20Mobile Receiver
Complete Manual
 pdf file icon4.7 MB
HR-1160Amateur Receiver?
Schematic only
 pdf file icon355 KB
HR-1680SSB /CW Receiver
Complete manual
 zip file icon5.1 MB
HRA-10-1Crystal Calibrator
Complete manual
 pdf file icon1.8 MB
HS-1661Station Speaker
Complete Manual
 pdf file icon644 KB
HVM-1220-1Monochrome Video Monitor
Schematic only
 pdf file icon1.1 MB
HW-7Low-Power CW Transceiver
Partial manual
 pdf file icon8.0 MB
HW-8Low-Power CW Transceiver
Partial manual
 pdf file icon4.1 MB
HW-9Deluxe QRP CW Transceiver
Schematic only
 pdf file icon9.4 MB
HW-9Deluxe QRP CW Transceiver
Complete Manual
 pdf file icon9.6 MB
HW-10"Shawnee" Transceiver
Complete Manual
 pdf file icon15.4 MB
HW-1280-Meter SSB Transceiver
Complete manual
 pdf file icon14.9 MB
HW-12A75-Meter SSB Transceiver
Partial manual
 pdf file icon1.7 MB
HW-16CW Transceiver
Complete Manual
 pdf file icon31.7 MB
HW-172 Meter AM Transceiver
Schematic only
 pdf file icon292 KB
HW-17A2 Meter Transceiver
Partial Manual
 pdf file icon7.1 MB
HW-1910 Meter Amateur Transceiver
Schematic only
 pdf file icon2.5 MB
HW-2240 Meter SSB Transceiver
Schematic only
 pdf file icon544 KB
HW-22A40 Meter SSB Transceiver
Complete manual
 pdf file icon14.7 MB
HW-29A6 Meter Amateur Transceiver
Complete manual
 pdf file icon4.4 MB
HW-302 Meter Amateur Transceiver
Complete manual
 zip file icon1.7 MB
HW-3220 Meter SSB Transceiver
Complete manual
 pdf file icon6.6 MB
HW-32A20 Meter SSB Transceiver
Schematic only
 pdf file icon3.4 MB
HW-100SSB Transceiver
Complete manual
 pdf file icon14.0 MB
HW-101SSB Transceiver
Complete manual
 zip file icon1.4 MB
HW-104Transciever
Schematic only - poor quality
 pdf file icon400 KB
HW-2022 Meter FM Transceiver
Schematic only - poor quality
 pdf file icon2.1 MB
HW-20212 Meter Hand-Held Transceiver
Schematic only - poor quality
 pdf file icon1.7 MB
HW-2036ASynthesized 2-Meter FM Transciever
Schematic, PLL description and block diagram
 pdf file icon671 KB
HWA-7-1Accessory Power Supply
Schematic and circuit description
 pdf file icon314 KB
HWA-202-2Tone Burst Encoder
Schematic only
 pdf file icon184 KB
HWA-2036-3AC Power Supply
Schematic only
 pdf file icon295 KB
HWA-5400Power Supply and Clock
Schematic only
 pdf file icon445 KB
HX-10"Marauder" SSB Transmitter
Schematic only - poor quality
 pdf file icon2.6 MB
HX-11CW Transmitter
Partial manual
 pdf file icon456 KB
HX-20SSB Mobile Transmitter
Schematic only
 pdf file icon2.1 MB
HX-1681CW Transmitter
Schematic only
 pdf file icon7.7 MB
IA-1Ignition Analyzer
Schematic and specifications
 pdf file icon1.7 MB
IB-1Impedance Bridge
Complete manual
 pdf file icon3.5 MB
IB-1BImpedance Bridge
Schematic only - poor quality
 pdf file icon162 KB
IB-2Impedance Bridge
Schematic and specifications
 pdf file icon1.1 MB
IB-2AImpedance Bridge
Complete manual
 pdf file icon1.5 MB
IB-28Impedance Bridge
Schematic only
 pdf file icon1.1 MB
IB-101Frequency Counter
Schematic only
 pdf file icon1.2 MB
IB-102Frequency Scaler
Partial manual
 pdf file icon1.8 MB
IB-1100Frequency Counter
Partial manual
 pdf file icon1.7 MB
IB-1101Frequency Counter
Schematic only
 pdf file icon1.6 MB
IB-1103Frequency Counter
Partial manual
 pdf file icon2.7 MB
IB-5281RLC Bridge
Complete manual
 pdf file icon7.6 MB
IC-1001Logic Analyzer
Schematic only
 pdf file icon478 KB
IC-1001 SoftwareLogic Analyzer
Software
 zip file icon9 KB
IC-2100Electronic Sliderule
Schematic and semiconductor identification chart
 pdf file icon3.9 MB
ID-22Electronic Switch
Partial manual
 pdf file icon4.0 MB
ID-29Automotive Tune-Up Meter
Schematic and specifications
 pdf file icon213 KB
ID-1290Weather Station
Schematic only
 pdf file icon529 KB
ID-1390Electronic Digital Thermometer
Schematic only
 pdf file icon492 KB
ID-1590 / ID-1590EDigital Wind Speed/Direction Indicator
Partial manual
 zip file icon1.1 MB
ID-1990Digital Barometer
Partial manual
 zip file icon1.0 MB
ID-4001Digital Weather Computer
Complete manual
 zip file icon24.7 MB
ID-4801EPROM Programmer
Complete Manual
 zip file icon19.2 MB
ID-4850Digital Memory Oscilloscope
Complete manual
 zip file icon36.9 MB
ID-5001Weather Station
Complete manual
 zip file icon20.7 MB
IG-18Sine-Square Audio Generator
Complete manual
 pdf file icon4.2 MB
IG-18 ModIG-18 Modifications Copyright 1970 by Edward T. Dell Jr.
Magazine article
 pdf file icon777 KB
IG-28Color Bar and Dot Generator
Schematic only
 pdf file icon1.3 MB
IG-37FM Stereo Generator
Schematic only
 pdf file icon230 KB
IG-42Laboratory Signal Generator
Schematic only
 pdf file icon447 KB
IG-62Color Bar and Dot Generator
Schematic only
 pdf file icon809 KB
IG-72Audio Generator
Complete manual
 pdf file icon7.2 MB
IG-82Sine Square Audio Generator
Schematic only
 pdf file icon486 KB
IG-102RF Generator
Schematic only
 pdf file icon731 KB
IG-1271Function Generator
Partial manual
 zip file icon8.2 MB
IG-1275Lin/Log Sweep Generator
Complete manual
 zip file icon5.6 MB
IG-4244Oscilloscope Calibrator
Schematic, block diagram and calibration
 pdf file icon1.9 MB
IG-4505Oscilloscope Calibrator
Complete manual
 pdf file icon2.2 MB
IG-5218Sine-Square Audio Generator
Schematic only
 pdf file icon501 KB
IG-5240Color Generator
Complete manual
 pdf file icon11.3 MB
IG-5257TV Post-Marker / Sweep Generator
Complete manual
 pdf file icon20.4 MB
IG-5280RF Oscillator
Complete manual
 pdf file icon9.8 MB
IG-5282Audio Generator
Schematic only
 pdf file icon1.6 MB
IM-1Intermodulation Analyzer
Schematic and specifications
 pdf file icon1002 KB
IM-10VTVM
Schematic only
 pdf file icon199 KB
IM-11VTVM
Schematic only
 pdf file icon173 KB
IM-12Harmonic Distortion Meter
Schematic only
 pdf file icon288 KB
IM-13Service Bench VTVM
Schematic only
 pdf file icon763 KB
IM-16Solid-State Voltmeter
Schematic and calibration procedure
 zip file icon2.1 MB
IM-17Utility Solid State Voltmeter
Complete manual
 zip file icon2.5 MB
IM-17 GermanUtility Solid State Voltmeter (German)
Schematic only
 pdf file icon490 KB
IM-18VTVM
Schematic only
 pdf file icon545 KB
IM-21AC VTVM
Schematic only
 pdf file icon181 KB
IM-22Audio Analyzer
Schematic only - poor quality
 pdf file icon80 KB
IM-25Solid State VOM
Complete Manual
 pdf file icon5.4 MB
IM-28UValve Voltmeter
Schematic only
 pdf file icon367 KB
IM-30Transistor Tester
Schematic only
 pdf file icon470 KB
IM-30UTransistor Tester
Complete manual
 pdf file icon39.0 MB
IM-48Audio Analyzer
Schematic only
 pdf file icon166 KB
IM-58Harmonic Distortion Meter
Schematic only
 pdf file icon517 KB
IM-103Line Voltage Monitor
Complete manual
 pdf file icon1.6 MB
IM-104Solid-State VOM
Schematic only
 pdf file icon783 KB
IM-1202Digital Mulitimeter
Partial manual
 pdf file icon1.5 MB
IM-2202Portable Digital Multimeter
Schematic and semiconductor identification chart
 pdf file icon3.3 MB
IM-2215Portable Digital Multimeter
Complete manual
 zip file icon15.7 MB
IM-2260Digital Multimeter
Partial manual
 pdf file icon8.6 MB
IM-2410Frequency Counter
Complete manual
 zip file icon20.8 MB
IM-2420Frequency Counter
Complete manual
 zip file icon14.6 MB
IM-4100 / SM-4100 / S-1357AFrequency Counter
Schematic and modification info
 pdf file icon1.1 MB
IM-4120 / SM-4120Frequency/Period Meter
Schematic only
 pdf file icon961 KB
IM-4130 / SM-4130Frequency/Period Meter
Schematic only
 pdf file icon4.7 MB
IM-4180FM Deviation Meter
Schematic and semiconductor identification chart
 pdf file icon2.8 MB
IM-4190 / SM-4190Bidirectional RF Wattmeter
Schematic only
 pdf file icon522 KB
IM-521040KV Probe Meter
Schematic, specifications and assembly
 pdf file icon1.3 MB
IM-5225FET Multimeter
Complete manual
 zip file icon33.1 MB
IM-5228Vacuum Tube Voltmeter
Partial Manual
 pdf file icon7.5 MB
IM-5238AC Voltmeter
Complete Manual
 zip file icon25.7 MB
IM-5258Harmonic Distortion Analyzer
Schematic only
 pdf file icon7.6 MB
IM-5284Multimeter
Schematic only
 pdf file icon4.2 MB
IMA-100-10High Voltage Oscilloscope Probe (X100)
Parts list and assembly
 pdf file icon841 KB
IN-11Decade Resistance Box
Schematic only
 pdf file icon72 KB
IN-17Decade Resistance Unit
Schematic and specifications
 pdf file icon638 KB
IN-21Decade Capacitance Box
Schematic only
 pdf file icon59 KB
IN-3117Decade Resistance Unit
Schematic only
 pdf file icon215 KB
IN-3127Decade Capacitance Unit
Complete Manual
 zip file icon3.6 MB
IN-3147Capacitance Switch Box
Assembly diagram
 pdf file icon114 KB
IO-10Oscilloscope
Complete manual
 zip file icon30.8 MB
IO-12Oscilloscope
Schematic only
 pdf file icon412 KB
IO-12UOscilloscope
Schematic only
 pdf file icon2.2 MB
IO-14Oscilloscope
Schematic only
 pdf file icon1.5 MB
IO-17Oscilloscope
Schematic only
 pdf file icon257 KB
IO-18Oscilloscope
Schematic only
 pdf file icon254 KB
IO-20Ignition Analyzer
Schematic only
 pdf file icon957 KB
IO-101Vectorscope
Schematic only
 pdf file icon577 KB
IO-102Oscilloscope
Schematic and semiconductor identification chart
 pdf file icon2.8 MB
IO-103Oscilloscope
Schematic only
 pdf file icon1.6 MB
IO-104Triggered Sweep Oscilloscope
Schematic only
 pdf file icon4.9 MB
IO-1128Vector Monitor
Schematic only
 pdf file icon256 KB
IO-41055Mhz Single Trace Oscilloscope
Complete manual
 zip file icon7.7 MB
IO-42055Mhz Dual Trace Oscilloscope
Complete manual
 zip file icon58.1 MB
IO-4235 / SO-423535MHz Dual Trace Oscilloscope
Complete manual
 zip file icon12.8 MB
IO-436060MHz 3 Trace Oscilloscope
Partial manual
 zip file icon10.1 MB
IO-4360A60MHz 3 Trace Oscilloscope
Complete Manual
 zip file icon39.8 MB
IO-4510 / SO-451015MHz Dual Trace Oscilloscope
Schematic only
 pdf file icon8.3 MB
IO-45405MHz Triggered Oscilloscope
Schematic and block diagram - poor quality
 zip file icon4.8 MB
IO-45415MHz Portable Oscilloscope
Partial manual
 zip file icon1.4 MB
IO-4550Dual Trace Oscilloscope
Complete manual
 zip file icon4.6 MB
IO-4555 / SO-455510MHz Single Trace Oscilloscope
Complete Manual
 zip file icon8.2 MB
IOA-4200Time-Voltage Module
Complete Manual
 zip file icon24.9 MB
IP-12Battery Eliminator
Schematic only
 pdf file icon113 KB
IP-17Regulated HV Power Supply
Schematic only
 pdf file icon113 KB
IP-181-15V DC Regulated Power Supply
Schematic and specifications
 pdf file icon299 KB
IP-20Transistorized Regulated Power Supply
Schematic only
 pdf file icon436 KB
IP-27Regulated L.V. Power Supply
Complete manual
 zip file icon6.3 MB
IP-281-30V DC Regulated Power Supply
Schematic only
 pdf file icon753 KB
IP-32HV Power Supply
Complete manual
 pdf file icon1.1 MB
IP-27000 - 60 V, 0 - 1.5 A DC Power Supply
Schematic only
 pdf file icon1.5 MB
IP-27100 - 30 V, 0 - 3 A DC Power Supply
Schematic only
 pdf file icon1.6 MB
IP-2715Battery Eliminator
Schematic only
 pdf file icon151 KB
IP-2718Triple Power Supply
Complete manual
 pdf file icon2.3 MB
IP-27200-15 V, 0-5 A DC Power Supply
Schematic only
 pdf file icon1.5 MB
IP-27281 - 15 V DC Regulated Power Supply
Schematic only
 pdf file icon981 KB
IP-27300 - 7.5 V, 0 - 10 A DC Power Supply
Schematic only
 pdf file icon1.4 MB
IPA-5280-1AC Power Supply
Schematic only
 pdf file icon240 KB
IR-5208Digital X-Y Plotter
Complete Manual
 zip file icon19.6 MB
IT-1Isolation Transformer
Schematic and layout diagram
 pdf file icon500 KB
IT-10Transistor - Diode Checker
Schematic only
 pdf file icon58 KB
IT-11Capacitor Checker
Complete manual
 pdf file icon2.1 MB
IT-12Signal Tracer
Complete manual
 pdf file icon3.4 MB
IT-17Tube Tester
Complete manual
 pdf file icon836 KB
IT-18Transistor Tester
Complete manual
 zip file icon1.2 MB
IT-21Tube Tester
Complete manual
 pdf file icon1.7 MB
IT-22Capaci-Tester
Complete manual
 pdf file icon888 KB
IT-28Capacitor Checker
Schematic only
 pdf file icon211 KB
IT-121FET/Transistor Tester
Complete manual
 pdf file icon3.6 MB
IT-1121Semiconductor Curve Tracer
Complete Manual
 zip file icon13.4 MB
IT-2232Component Tracer
Complete manual
 zip file icon13.0 MB
IT-2240Digital LC Bridge
Complete manual
 zip file icon18.2 MB
IT-2250Auto-Ranging Digital Capacitance Meter
Complete manual
 pdf file icon5.0 MB
IT-3117Tube Checker
Complete manual
 pdf file icon1020 KB
IT-3120FET/Transistor Tester
Complete manual
 zip file icon12.6 MB
IT-3121Semiconductor Curve Tracer
Schematic and operation
 zip file icon5.9 MB
IT-5283Signal Tracer
Partial manual
 pdf file icon840 KB
KL-1"Chippewa" Linear Amplifier
Complete manual
 pdf file icon3.8 MB
LG-1Laboratory RF Generator
Schematic only
 pdf file icon280 KB
LP-2Linearity Pattern Generator
Schematic only - poor quality
 pdf file icon261 KB
M-1Handitester
Schematic and specifications
 pdf file icon619 KB
MI-18Tachometer
Schematic and specifications
 pdf file icon177 KB
MI-25Fuel Vapor Detector
Schematic only
 pdf file icon576 KB
MI-29Fish Spotter/Depth Sounder
Schematic only - poor quality
 pdf file icon850 KB
MI-31AElectronic Tachometer
Schematic only
 pdf file icon173 KB
MM-1Multimeter
Schematic and specifications
 pdf file icon498 KB
MP-10Power Inverter
Schematic only
 pdf file icon359 KB
MR-1Mobile Receiver
Complete manual
 pdf file icon3.9 MB
MR-18Radio Direction Finder
Schematic only
 pdf file icon477 KB
MR-21"Mariner" Radio Direction Finder
Schematic only
 pdf file icon1.7 MB
MT-1"Cheyenne" Mobile Transmitter
Schematic only
 pdf file icon324 KB
NE-12117-Day Intelligent Home Comfort Control
Schematic and block diagram
 pdf file icon436 KB
NE-2112Heat Sniffer
Schematic only
 pdf file icon230 KB
O-7Oscilloscope
Schematic only
 pdf file icon159 KB
O-9Oscilloscope
Complete manual
 pdf file icon4.1 MB
O-10Oscilloscope
Schematic only
 pdf file icon738 KB
O-11Oscilloscope
Complete manual
 pdf file icon829 KB
O-12Oscilloscope
Complete manual
 pdf file icon25.0 MB
OM-1Oscilloscope
Complete manual
 pdf file icon2.6 MB
OM-2Oscilloscope
Schematic only
 pdf file icon62 KB
OM-3Oscilloscope
Schematic only
 pdf file icon427 KB
OP-1Professional Oscilloscope
Schematic only
 pdf file icon460 KB
OR-1DC Oscilloscope
Schematic only
 pdf file icon772 KB
OS-1General Purpose Oscilloscope
Schematic only
 pdf file icon804 KB
OS-2Oscilloscope
Schematic only - poor quality
 pdf file icon2.0 MB
OS-12Oscilloscope
Schematic only
 pdf file icon2.2 MB
山东175家危化品生产企业需搬迁 已关闭524家化工企业Optimizing the heathkit HW-101, SB100-102 Transceivers," by Mark Graalman, WB8JKR, and Len Greenberg, WB8JCJ
5 Diagrams
 zip file icon3.0 MB
PK-1Universal Scope Probe
Schematic and specifications
 pdf file icon267 KB
PK-3RF Probe
Schematic and circuit description
 pdf file icon114 KB
PK-3ARF Probe
Schematic only
 pdf file icon85 KB
PKW-2Scope Probe
Schematic only
 pdf file icon16 KB
PKW-101Oscilloscope Probe
Schematic and instructions
 pdf file icon697 KB
PM-2Mobile Meter
Schematic and circuit description
 pdf file icon224 KB
PS-2Laboratory Power Supply
Schematic only
 pdf file icon43 KB
PS-3HV Regulated Power Supply
Partial manual
 pdf file icon1.5 MB
PS-4HV Regulated Power Supply
Schematic only
 pdf file icon377 KB
PS-9000Power Supply
Schematic only
 pdf file icon550 KB
PSA-9Accessory Power Supply
Schematic only
 pdf file icon74 KB
PT-1Professional AM-FM Stereo Tuner
Schematic only
 pdf file icon210 KB
PT-15Photo Timer
Partial manual
 pdf file icon2.5 MB
QF-1Q-Multiplier
Complete manual
 pdf file icon881 KB
QM-1Q-Meter
Schematic, specifications and circuit description
 pdf file icon1.1 MB
R-110Junior Transistor-Diode Radio
Complete manual
 pdf file icon1007 KB
RA-1Basic Amateur Receiver
Complete manual
 pdf file icon1.2 MB
RC-1Radiation Counter
Complete manual
 pdf file icon2.0 MB
RF-1RF Signal Generator
Complete manual
 pdf file icon2.9 MB
RF-1URF Signal Generator
Partial manual
 pdf file icon1.3 MB
RG-1General Coverage Receiver
Schematic and specifications
 pdf file icon2.4 MB
RP-1Record Player
Schematic and specifications
 pdf file icon615 KB
RP-1065Model Railroad Electronic Throttle
Schematic only
 pdf file icon1.1 MB
RX-1"Mohawk" Amateur Communications Receiver
Complete manual
 pdf file icon8.1 MB
S-2Electronic Switch
Schematic and specifications
 pdf file icon589 KB
S-3Electronic Switch for oscilloscope
Schematic only
 pdf file icon163 KB
S-88Stereo Amplifier
Schematic only
 pdf file icon216 KB
S-99Stereo Amplifier
Schematic only
 pdf file icon1.3 MB
SA-2Stereo Integrated Audio Amplifier
Schematic only
 pdf file icon798 KB
SA-2060ADe-Luxe Antenna Tuner
Complete manual
 zip file icon5.2 MB
SA-2060A CalCalibration Procedure for Heathkit Antenna Tuner SA-2060 & SA2060A
By Derf Mockford G8ZGK, 17 Nov 2007
 pdf file icon207 KB
SA-5010uMatic Keyer
Schematic only
 pdf file icon789 KB
SA-70104-Element Tri-Band Antenna
Complete manual
 pdf file icon34.9 MB
SB-10SSB Adaptor
Complete manual
 pdf file icon3.2 MB
SB-100SSB Transceiver
Schematic only
 pdf file icon3.9 MB
SB-101SSB Transceiver
Schematic only
 pdf file icon6.9 MB
SB-102SSB Transceiver
Schematic only
 pdf file icon6.1 MB
SB-104ASSB Transceiver
Schematic only
 pdf file icon1.4 MB
SB-200Linear Amplifier
Schematic and specifications
 pdf file icon811 KB
SB-2202KW Linear Amplifier
Complete manual
 pdf file icon61.5 MB
SB-230Linear Amplifier
Schematic only
 pdf file icon393 KB
SB-300SSB Amateur Receiver
Complete manual
 pdf file icon6.7 MB
SB-301SSB Amateur Receiver
Schematic only
 pdf file icon2.5 MB
SB-303Solid-State SSB Reciever
Schematic and semiconductor identification chart
 pdf file icon2.0 MB
SB-310SWL Receiver
Partial manual
 pdf file icon6.6 MB
SB-401SSB Transmitter
Complete manual
 pdf file icon9.0 MB
SB-500Transverter
Complete manual
 pdf file icon2.1 MB
SB-600Communications Speaker
Partial manual (several important pages missing)
 pdf file icon238 KB
SB-610Monitor Scope
Complete manual
 pdf file icon2.6 MB
SB-614Station Monitor
Schematic only
 pdf file icon1.6 MB
SB-620Scanalyzer
Schematic only
 pdf file icon1.3 MB
SB-630Station Console
Schematic only
 pdf file icon1.4 MB
SB-634Station Console
Schematic only
 pdf file icon1.4 MB
SB-640External LMO
Schematic only
 pdf file icon254 KB
SB-644Remote VFO
Schematic and semiconductor identification chart
 pdf file icon881 KB
SB-644ARemote VFO
Schematic only
 pdf file icon1.6 MB
SB-650Digital Frequency Display
Schematic only
 pdf file icon1.5 MB
SB-1000Linear Amplifier
Complete manual
 pdf file icon5.0 MB
SBA-2001-1QSK Board
Schematic only
 pdf file icon430 KB
SBM-104-1Modification Kit for SB-104
Complete manual
 pdf file icon1.1 MB
SG-6RF Signal Generator
Complete manual
 pdf file icon11.3 MB
SG-7RF Signal Generator
Complete manual
 pdf file icon1.3 MB
SG-8RF Signal Generator
Complete manual
 pdf file icon3.5 MB
SM-2380Ruggedized Autoranging DMM
Schematic, PCB layout and calibration
 pdf file icon2.7 MB
SP-2Audio Pre-Amplifier
Schematic only
 pdf file icon341 KB
SP-2717ARegulated High Voltage Power Supply
Complete manual
 pdf file icon1.5 MB
SQ-1Square Wave Generator
Schematic and specifications
 pdf file icon686 KB
SS-9000HF Synthesized Transciever
Schematic only
 pdf file icon3.0 MB
SW-717Shortwave Receiver
Schematic only
 pdf file icon1.2 MB
T-2Signal Tracer
Complete manual
 zip file icon6.6 MB
T-3Visual-Aural Signal Tracer
Schematic and specifications
 pdf file icon2.4 MB
T-4Visual-Aural Signal Tracer
Complete manual
 pdf file icon2.3 MB
TA-16Amplifier
Schematic only
 pdf file icon1.5 MB
TA-17Solid-State Combo Amplifier
Schematic only
 pdf file icon2.3 MB
TC-1Tube Checker
Complete manual
 pdf file icon2.0 MB
TC-2Tube Checker
Partial manual
 pdf file icon234 KB
TCR-1Transistor Clock Radio
Schematic only
 pdf file icon153 KB
TD-17Solid-State Metronome
Complete manual
 pdf file icon2.0 MB
TD-1006Color Organ
Schematic only
 pdf file icon1.4 MB
TD-1089Programmable Electronic Chimes
Schematic only
 pdf file icon5.1 MB
TS-2TV RF Signal Generator
Schematic only
 pdf file icon240 KB
TS-3TV Signal Generator
Schematic and parts list
 pdf file icon390 KB
TS-4ATV Signal Generator
Schematic only
 pdf file icon381 KB
TT-1ATube Tester
Complete manual
 zip file icon2.6 MB
TX-1"Apache" Transmitter
Schematic only
 pdf file icon832 KB
Tube DataTube Data for IT-17, IT-21 and IT-3117 Tube Testers
Tube data
 pdf file icon1.1 MB
UA-112 Watt Audio Amplifier
Schematic only
 pdf file icon175 KB
UT-1Utility Power Supply
Schematic only
 pdf file icon206 KB
UXR-1Transistor Radio
Complete manual
 pdf file icon2.5 MB
UXR-2"Oxford" Transistor Radio
Complete manual
 pdf file icon3.4 MB
V-4VTVM
Schematic only
 pdf file icon446 KB
V-4AVTVM
Schematic only
 pdf file icon182 KB
V-5VTVM
Schematic only
 pdf file icon204 KB
V-6VTVM
Schematic and specifications
 pdf file icon542 KB
V-7AVTVM
Schematic only
 pdf file icon443 KB
VC-2Voltage Calibrator
Schematic and specifications
 pdf file icon530 KB
VC-3Voltage Calibrator
Schematic only
 pdf file icon393 KB
VF-1VFO
Schematic only
 pdf file icon183 KB
VF-2031Hand-Held 2-Meter Transceiver
Schematic only
 pdf file icon2.5 MB
VHF-1"Seneca" VHF Ham Transmitter
Schematic and voltage chart
 pdf file icon3.6 MB
VT-1Vibrator Tester
Schematic and specifications
 pdf file icon497 KB
VX-1Voice Control
Schematic only
 pdf file icon246 KB
W-2Mono Audio Power Amp
Schematic and specifications
 pdf file icon596 KB
W-5MWilliamson Type Amplifier
Partial manual
 pdf file icon7.7 MB
W-6A70W Audio Amplifier
Complete manual
 pdf file icon2.8 MB
W-6M70W Audio Amplifier
Schematic only
 pdf file icon300 KB
W-7M55W Audio Power Amp
Schematic only
 pdf file icon172 KB
W-GC-1AAmateur Receiver?
Schematic and alignment
 pdf file icon2.0 MB
W3-AMAudio Power Amp
Schematic only
 pdf file icon184 KB
W4-AMWilliamson Type Amplifier
Partial manual
 pdf file icon7.9 MB
WA-P1Preamplifier
Schematic and specifications
 pdf file icon500 KB
WA-P2Audio Preamplifier
Partial manual
 pdf file icon5.9 MB
XC-22 Meter Converter
Schematic only
 pdf file icon31 KB
XC-66 Meter Crystal Converter
Schematic only
 pdf file icon111 KB
XO-1Electronic Crossover
Partial manual
 pdf file icon5.1 MB
XP-2Power Pack for GC-1 Reciever
Schematic and circuit description
 pdf file icon764 KB
XR-1Transistor Radio
Schematic and alignment
 pdf file icon1.6 MB
XR-2Transistor Radio
Schematic only
 pdf file icon1.0 MB