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General
Radio Company (later, GenRad) was a broad-line manufacturer of
electronic test equipment. Started in Cambridge, Massachusetts in 1915
by Melville Eastham, the company moved to West Concord in the 1950s.
There, it became a major player in the automatic test equipment (ATE)
business, manufacturing a line of testers for assembled printed circuit
boards. It also produced extensive lines of electrical component
measuring equipment, sound and vibration measurement and RLC standards.
The
classic GenRad instrument line including RLC standards and decades,
Digibridges, LCR meters, megohmmeters, stroboscopes, and sound level
meters continues to be manufactured and supported by IET Labs, Inc. in
West Roxbury, MA.
Among
General Radio's accomplishments over the years have been:
The
introduction of one of the world's first portable oscilloscopes
The
production of many high-precision standards for resistance and
capacitance
The
commercial production of the stroboscope as the Strobotac
The
commercial production of the sound level meter
Commercial invention of the binding post.
Invention
of the GR connector
The
Variac variable autotransformer
This collection includes all known back
issues, dating back to 1926, as well as additional bonus material, such
as the first 5 volumes of General Radio News, and General Radio History
books, 490 publications
in all:
1926
Announcing a New General Radio Service
for Experimenters - GenRad Experimenter June 1926
The "B" Battery Eliminator -
GenRad Experimenter July 1926
The Design and Use of the Speaker
Filter- GenRad Experimenter Aug 1926
The Status of "A" Battery Retrofit
Elimination - GenRad Experimenter Oct 1926
An Effective Method of Measuring
Amplification Nov 1926 - GenRad Experimenter Nov 1926
An Effective Method of Measuring
Amplification Nov 1926 - GenRad Experimenter Dec 1926
1927
Design And Testing Of Plate Supply
Devices - GenRad Experimenter Jan 1927
A Study Of Coil Resistances At 40
Meters - GenRad Experimenter Feb 1927
A Discussion Of Condenser Plate
Shapes - GenRad Experimenter March 1927
New Tubes For Old - GenRad
Experimenter April 1927
A Review Of Coupling Methods -
GenRad Experimenter May 1927
The Design And Use Of The Radio
Frequency Choke - GenRad Experimenter June 1927
Compete A.C. Operation A Practical
Reality - GenRad Experimenter July 1927
Further Data On New A.C. Tubes -
GenRad Experimenter Aug 1927
Unique Method Of Voltage Control
Adapts Unit To Any Standard Type Of Receiver - GenRad Experimenter Sept
1927
Power Amplification - GenRad
Experimenter Oct 1927
An A.C. Operated Amplifier With A
High Quality Power Output - GenRad Experimenter Nov 1927
Factors Governing The Choice Of
Power Tubes - GenRad Experimenter Dec 1927
1928
The Development and Use of the
Hydrophone - GenRad Experimneter Jan 1928
Equipment of the Service
Laboratory GenRad Experimenter Feb 1928
Factors Concerning the Use of the
Type UX 250 Power Amplifier Tube - GenRad Experimenter March 1928
A Phonograph Amplifier - GenRad
Experimenter April 1928
The Development and Use of the
Hydrophone - GenRad Experimenter May 1928
Magneto-Striction Oscillators -
GenRad Experimenter June 1928
A Direct to Consumer Policy -
GenRad Experimenter July 1928
Magnetostriction Oscillators -
GenRad Experimenter Aug 1928
Notes on Group Address Systems -
GenRad Experimenter Sept 1928
The Development and Use of the
Hydrophone - GenRad Experimenter Oct 1928
Rating of Radio Receiviers -
GenRad Experimente Nov 1928
How and Why the Talkies - GenRad
Experimenter Dec 1928
1929
Units of Electrical Transmission -
GenRad Experimenter Jan 1929
A New Relay - GenRad Experiimenter
Feb 1929
Frequency Determination - GenRad
Experimenter March 1929
A New Frequency Standard - GenRad
Experimenter April 1929
Permalloy - GenRad Experimenter
May 1929
Production Testing of
Audio-Frequency Amplifiers - GenRad Experimenter June 1929
The Importance of Mutual
Conductance in Testing Vacuum Tubes - GenRad Experimenter July-Aug 1929
Improving The Precision of Setting
In A Tuned-Circuit Wavemeter - GenRad Experimenter Sept 1929
A Low-Frequency Oscillator -
GenRad Experimenter Oct 1929
Notes On Power Measurement In
Communication Circuits - GenRad Experimenter Nov 1929
Television: A Comparison With
Other Kinds of Electrical Communication - GenRad Experimenter Dec 1929
1930
An Equal-Arm Capacitance Bridge - GenRad
Experimenter Jan 1930
Piezo-Electric Quartz Plates -
GenRad Experimenter Feb 1930
The Standard-Signal Method of
Measuring Receiver Characteristics - GenRad Experimenter March 1930
A Tuning-Fork Audio Oscillator -
GenRad Experimenter April 1930
Th Dynatron - GenRad Experimenter
May 1930
We Celebrate A Birthday - GenRad
Expermenter June 1930
The Continuous Recording of Pulse
Rates - GenRad Experimenter July 1930
Accuracy Considerations In The Use
of Tuned-Circuit Wavemeters - GenRad Experimenter Aug 1930
Electrically-Driven Tuning Forks -
GenRad Experimenter Sept 1930
The Frequency Stability of Piezo-Electric
Monitors - GenRad Experimenter Oct 1930
The Frequency Stability of Piezo-Electric
Monitors II - GenRad Experimenter Nov 1930
The New Home of The Engineering
Department - GenRad Experimenter Dec 1930
1931
Field Intensity Measurements - GenRad
Experimenter Jan 1931
Attenuation Measurements On
Telephone And Telegraph Lines - GenRad Experimenter Feb 1931
Modulation Measurements On
Broadcast Transmitters - GenRad Experimenter March 1931
A Continuous-Film Camera For The
Oscillograph - GenRad Experimenter April 1931
Electron Oscillations - GenRad
Experimenter May 1931
Volume Control In Voice Circuits -
GenRad Experimenter June 1931
What's New In Radio - GenRad
Experimenter July 1931
Speeding Up The Standard Signal
Generator - GenRad Experimenter Aug 1931
Some Uses For A Precision
Chronograph - GenRad Experimenter Sept 1931
Thermocouples - GenRad
Experimenter Oct 1931
A Bridge-Type Frequency Meter -
GenRad Experimenter Nov 1931
A Piezo-Electric Oscillator of
Improved Stability - GenRad Experimenter Dec 1931
1932
A Universal Bridge - GenRad Experimenter
Jan 1932
Frequency Characteristics - GenRad
Experimenter Feb 1932
The Michelson Velocity of Light
Experiment - March 1932
Testing Radio Receivers On The
Assembly Line - GenRad Experimenter April 1932
New Measuring Instruments - GenRad
Experimenter May 1932
Waveform Studies With The
Cathode-Ray Oscillograph - GenRad Experimenter June 1932
Bridge Methods For Measurements At
Radio Frequencies - GenRad Experimenter July 1932
Telephone Transmission
Measurements - GenRad Experimenter Aug 1932
Inexpensive Noise-Measuring
Equipment - GenRad Experimenter Sept 1932
The Wavemeter Yields - GenRad
Experimenter Oct 1932
A Signal Generator For The New
Receiver Tests - GenRad Experimenter Nov 1932
The Stroboscope - GenRad
Experimenter Dec 1932
1933
Recent Developments In Mica Condensers -
GenRad Experimenter Jan 1933
Mixer Controls For Dynamic
Microphones And Ribbon Microphones - GenRad Experimenter Feb 1933
Mixer Circuits That Work - GenRad
Experimenter March 1933
The Convenient Measurement Of C,
R, And L - GenRad Experimenter April-May 1933
Some Improvements In Cathode-Ray
Oscillographs - GenRad Experiimenter June-July 1933
Chronograph Measurements In
Chemistry - GenRad Experimenter Aug-Sept 1933
Simplifying Experimental-Equipment
Construction - GenRad Experimenter Oct 1933
Cathode-Ray Oscillographs And
Their Applications - GenRad Experimenter Nov 1933
Improvements In Radio-Frequency
Bridge Methods For Measuring Antennas And Other Impedances - GenRad
Experimenter Dec 1933
1934
Recent Developments In Frequency
Standards - GenRad Experimenter Jan-Feb 1934
The Measurement Of A Small
Inductance - GenRad Experimenter March 1934
The General Radio-Hazeltine
Reactance Meter - GenRad Experimenter April 1934
How Dials Are Made - GenRad
Experimenter May 1934
New Developments In Electron
Oscillography - GenRad Experimenter June 1934
Impedance Matching - GenRad
Experimenter July-Aug 1934
Power Factor Measurements In Oil
Analysis - GenRad Experimenter Sept-Oct 1934
A New Moving-Film Camera - GenRad
Experimenter Nov-Dec 1934
1935
Monitoring of Broadcasting Stations Part
I - GenRad Experimenter Jan 1935
Monitoring of Broadcasting
Stations Part II - GenRad Experimenter Feb 1935
Waveform Errors In The Measurement
Of Filter Characteristics - GenRad Experimenter Mar 1935
Using The Noise Meter With A
Vibration Pickup - GenRad Experimenter April 1935
An Improved Audio Oscillator -
GenRad Experimenter May 1935
A Review Of 20 Years Of Progress
In Communication-Frequency Measurements - GenRad Experimenter June 1935
Wide-Range Transformers - GenRad
Experimenter July 1935
A New Stroboscope For Speed
Measurements - GenRad Experimenter Aug 1935
An A-C Operated Resistance-Coupled
Amplifier - GenRad Experimenter Sept 1935
Shielded Transformers For
Impedance Bridges - GenRad Experimenter Oct 1935
Waveform Errors In The Measurement
Of Power Transformer Losses - GenRad Experimenter Nov 1935
The New Modulation Monitors - Dec
1935
1936
A New Precision Condenser - GenRad
Experimenter Jan 1936
Measurement Of The Impedance Of
The Human Body - GenRad Experimenter Feb 1936
A New Precision Wavemeter - GenRad
Experimenter March 1936
Better Mixer Controls - GenRad
Experimenter April 1936
A Precision Tuning Fork - GenRad
Experimenter May 1936
A Modern Standard-Signal Generator
- GenRad Experimenter June 1936
Quiet, Please - GenRad
Experimenter July-Aug 1936
Convenience In Noise Measurement A
Really Portable Sound Level Meter - GenRad Experimenter Sept-Oct 1936
Losses In Audio-Frequency Coils -
GenRad Experimenter Nov 1936
An Audio-Frequency Schering Bridge
- GenRad Experimenter Dec 1936
1937
The Measurement Of Mutual Inductance -
GenRad Experimenter Jan 1937
Building Into An Air Condenser -
GenRad Experimenter Feb 1937
Tuning The Type 814-A Amplifier -
GenRad Experimenter March 1937
Distortion Measurements In The
Broadcasting Station - GenRad Experimenter April 1937
Type 726-A Vacuum - Tube Voltmeter
- GenRad Experimenter May 1937
A High-Frequency Voltage Standard
- GenRad Experimenter June 1937
The Megohm Bridge - GenRad
Experimenter July 1937
A New Instrument And A New Circuit
For Coil Or Condenser Checking - GenRad Experiment Aug-Sept 1937
A Peak-Reading Power-Level
Indicator For Monitoring Broadcast & Sound Recording Circuits - GenRad
Experimenter Oct 1937
A Radio-Frequency Source For The
Laboratory - GenRad Experimenter Nov 1937
Noise Steps Out - GenRad
Experimenter Dec 1937
1938
Connection Errors In Capacitance
Measurements - GenRad Experimenter Jan 1938
A Frequency-Limit Monitor For The
High-Frequency Bands - GenRad Experimenter Feb 1938
Modern Improvements For The
Beat-Frequency Oscillator - GenRad Experimenter March 1938
A-C Operation For Type 613-B
Beat-Frequency Oscillator - GenRad Experimenter April 1938
The Variac Transformer - GenRad
Experimenter May 1938
A Wide-Range Capacitance Test
Bridge - GenRad Experimenter June 1938
Radio Receiver Tests With Type
732-A Distortion And Noise Meter - GenRad Experimenter July 1938
The Type 726-A Vacuum-Tube
Voltmerer As A Radio-Freqency Ammeter - GenRad Experimenter Aug-Sept
1938
A High-Frequency Model Of The
Precision Condenser - GenRad Experimenter Oct-Nov 1938
The New Wave Analyzers - Some Of
Its Features - GenRad Experimenter Dec 1938
1939
A Beat-Frequency Oscillator For
Wide-Band Measurements - GenRad Experimenter Jan 1939
A-C Operated Direct-Current
Amplifier For Industrial Use - GenRad Experimenter Feb 1939
A Low-Distortion Oscillator -
GenRad Experimenter April 1939
A 500-Volt Megohm Bridge - GenRad
Experimenter June 1939
New Models Of The Variac - GenRad
Experiementer July 1939
A New Condenser For High-Frequency
Circuits - GenRad Experimenter Aug 1939
Impedance Measurements at High Frequencies with Standard Parts -
GenRad Experimenter Sept 1939
Network Testing With Square Waves
- GenRad Experimenter Dec 1939
1940
A Broadcast Frequency Monitor For The
20-Cycle Rule - GenRad Experimenter Jan 1940
Routine Frequency Measurements To
0.005% - GenRad Experimenter Feb 1940
A Guard Circuit For Capacitance
Bridge Measurements - GenRad Experimenter March 1940
Transient Response Of A Broadcast
System - GenRad Experimenter April 1940
A Voltage Multiplier For Use With
The Vacuum-Tube Voltmeters At Radio Frequencies - GenRad Experimenter
May 1940
The General Radio Company - GenRad
Experimenter June 1940
A Portable Megohmmeter - GenRad
Experimenter July 1940
Direct-Reading Wavemeter For Ultra High Frequences - GenRad Experimenter Aug 1940
An Improved Measuring Circuit for the Susceptance Variatation
Method - GenRad
Experimenter Sept -Oct 1940
Single-Flash Photography with the Strobotac and the Strobolux - GenRad Experimenter Nov
1940
Radio-Frequency Characteristics of Decade Resistors - GenRad Experimenter Dec 1940
1941
A New Null Instrument For Measuring
High-Frequency - GenRad Experimenter Jan 1941
An Improved Ultra-High Frequency
Signal Generator - GenRad Experimenter Feb 1941
Deliveries - GenRad Experimenter
March 1941
Instrument Specifications - GenRad
Experimenter April 1941
Radio-Frequency Characteristics Of
The Type 726-A Vacuum Tube Voltmeter - GenRad Experimenter May 1941
The Vibration Meter-A New
Electronic Tool For Industry - GenRad Experimenter June 1941
Impedance Bridges Assembled From
Laboratory Parts - GenRad Experimenter July 1941
Impedance Bridges Assembled From
Laboratory Parts-Part II - GenRad Experimenter Aug 1941
The Microflash - A Light Source for Ultra0High Speed Photography - GenRad Experimenter
Sept 1941
A Vacuum Tube Driven Tuning Fork Oscillator - GenRad Experimenter Oct 1941
A Redesign of the Vacuum Tube Bridge - GenRad Experimenter Nov 1941
Impedance Bridges Assembled from Laboratory Parts Part VI
- GenRad Experimenter Dec
1941
1942
An A-C-Operated Power Supply For The
Sound-Level Meter - GenRad Experimenter Jan 1942
The Measurement & Analysis Of
Linear & Torsional Vibrations With Electronic Instruments - GenRad
Experimenter Feb 1942
How Good Is An Iron-Cored Coil? -
GenRad Experimenter March 1942
Increased Power-Factor Range For
The Capacitance Bridge - GenRad Experimenter April 1942
The Type 727-A Vacuum-Tube
Voltmeter-A Portable Battery-Operated Instrument - GenRad Experimenter
May 1942
Antenna Measurements With The
Radio-Frequency Bridge - GenRad Experimenter June 1942
Bringing The Beat-Frequency
Oscillator Up To Date - GenRad Experimenter July 1942
A New R-F Bridge For Use At
Frequencies Up To 60 MC - GenRad Experimenter Aug 1942
A General Purpose Wavemeter -
GenRad Experimenter Sept. 1942
Frequency Characteristics Of
Decade Condensers - GenRad Experimenter Oct 1942
Progress In Signal Generator
Design - GenRad Experimenter Nov 1942
Order Now For Future Delivery -
GenRad Experimenter Dec 1942
1943
The Noise Primer - GenRad Experimenter
Jan 1943
The Noise Primer-Part III -The
Decibel-What Is it? - GenRad Experimenter Feb 1943
General Radio Company Wins
Army-Navy "E" - GenRad Experimenter March 1943
The Noise Primer Part VI-Analysis
Of Noise - GenRad Experimenter April 1943
WPB Order M-293 - GenRad
Experimenter May 1943
The Noise Primer Part IX-Vibration
And Sound - GenRad Experimenter June 1943
The Noise Primer Part XII - GenRad
Experimenter July 1943
The Effect Of Humidity On
Electrical Measurements - GenRad Experimenter Aug 1943
Identification Of Harmonics In A
Harmonic Series - GenRad Experimenter Sept 1943
Calibration Of Equipment In The
Low & Medium Radio-Frequency Ranges, In Small Steps Of Frequency -
GenRad Experimenter Oct 1943
General Radio Opens Chicago Office
- GenRad Experimenter Nov 1943
Measurements Of The
Characteristics Of Transmission Lines-Part II - GenRad Experimenter Dec
1943
1944
The Communications Receiver As A Wave
Analyzer - GenRad Experimenter Jan 1944
Motor Speed Control With The
Variac - GenRad Experimenter Feb 1944
New Chairs--Same People - GenRad
Experimenter March 1944
A Bridge-Controlled Osicllator -
GenRad Experimenter April 1944
Random Emission Compensation -
GenRad Experimenter May 1944
New Entrance--Same Location -
GenRad Experimenter June-July 1944
Notes On The Design Of Temperature
Control Units - GenRad Experimenter Aug 1944
A Method For Measuring Small
Direct Capacitances - GenRad Experimenter Sept 1944
The Butterfly Circuit - GenRad
Experimenter Oct 1944
A 500-MC Oscillator - GenRad
Experimenter Nov 1944
A D-C Vacuum-Tube Voltmeter -
GenRad Experimenter Dec 1944
1945
Fifth Army-Navy "E" Award To General
Radio Company - GenRad Experimenter Jan-Feb 1945
High Frequency Compensation For
Amplifiers - GenRad Experimenter March 1945
Microflash Shows Flight Defects In
Projectiles - GenRad Experimenter April 1945
Vacuum-Tube And Crystal Rectifiers
As Galvanometers And Voltmeters At Ultra-High Frequencies - GenRad
Experimenter May 1945
Development Engineering At The
General Radio Company - GenRad Experimenter June 1945
A Heterodyne Frequency Meter For
10 To 3,000 Megacycles - GenRad Experimenter July-Aug 1945
A Precision Tuning Fork With
Vacuum-Tube Drive - Genrad Experimenter Sept 1945
A Wavemeter For 240 To 1200
Megacycles - GenRad Experimenter Oct 1945
An Improved Megohmmeter for A-C
Operation - GenRad Experimenter Nov/Dec 1945
1946
The Series And Parallel Components Of
Impedance - GenRad Experimenter Jan 1946
The Constant Waveform Frequency
Meter - GenRad Experimenter Feb 1946
A Convenient Amplifier And Null
Detector - GenRad Experimenter March 1946
Have You A Type 650 Impedance
Bridge? - GenRad Experimenter April 1946
V-5 Series Variacs--New, Improved
Models Repalce 200-C Series - GenRad Experimenter May 1946
Output Systems Of Signal
Generators - GenRad Experimenter June 1946
V-10 Series Variacs-New, Standard
Models Intermediate Between 200-C & 100 Series-GenRad Experimener
July-Aug 1946
A New Vacuum-Tube Voltmeter -
GenRad Experimenter Sept 1946
A Peak-Reading Voltmeter For The
U-H-F Ranges - GenRad Experimenter Oct 1946
The New Broadcast Monitoring
Equipment - GenRad Experimenter Nov 1946
Decade Voltage Divider Now
Available - GenRad Experimenter Dec 1946
1947
General Radio Enlarges Plant - GenRad
Experimenter Jan 1947
A Versatile Monitor For Use From
1.6 To 150 Megacycles - GenRad Expermenter Feb 1947
Search Receivers For Radar
Countermeasures - GenRad Experimenter March 1947
A Wide-Frequency-Range Capacitance
Bridge - GenRad Experimenter April 1947
Connection Errors In Capacitance
Measurements - GenRad Experimenter May 1947
Increased Accuracy For The
Precision Condenser - GenRad Experimenter June 1947
A Counting-Rate Meter For
Radioactivity Measurements - GenRad Experimenter July-Aug 1947
Dr. Beranek Becomes General Radio
Consultant On Acoustics - GenRad Experimenter Sept 1947
Type 1170-A F-M Monitor For
Broadcast And Television Services - GenRad Experimenter Oct 1947
A Wide-Range Oscillator For Audio
And Supersonsonic Frequencies - GenRad Experimenter Nov 1947
V-20 Series Variacs--New, Standard
Models Replace 100 Series--Ratings Increased - GenRad Experimenter Dec
1947
1948
Sensitivity Of The Type 916-A
Radio-Frequency Bridge - GenRad Experimenter Jan 1948
A Bridge-Type Audio-Frequency
Meter - GenRad Experimenter Feb 1948
On The Equivalent Circuit And
Performance Of Plated Quartz Bars - GenRad Experimenter March-April 1948
A Voltage Mutiplier For The
Vacuum-tube Voltmeter - GenRad Experimenter May 1948
Making A Good Instrument Better -
GenRad Experimenter June 1948
A Wide-Range Capacitance Test
Bridge - GenRad Experimenter July 1948
The Type 1670-A Magnetic Test Set
- GenRad Experimenter Aug 1948
A Frequency Monitor For Television
Video Transmitter - GenRad Experimenter Sept 1948
A Radically New Coaxial Connector
For The Laboratory - GenRad Experimenter Oct 1948
A Compact Radio-Frequency
Capacitance Measuring Instrument - GenRad Experimenter Nov 1948
The Interpolating Frequency
Standard - GenRad Experimenter Dec 1948
1949
Measurements On I-F Transformers With
The Type 916-A R-F Bridge - GenRad Experimenter Jan 1949
A Crystal Mode Indicator - GenRad
Experimenter Feb 1949
A New Bridge For Impedance
Measurements At Frequencies Between 50 Kilocycles & 5 Megacycles -
GenRad Experimenter March 1949
Variac Motor Speed Controls -
GenRad Experimenter April 1949
A High-Power, Low-Speed
Stroboscope - GenRad Experimenter May 1949
Distortion Measurement In The
Broadcasting Station - GenRad Experimenter June 1949
A New Decade Inductor - GenRad
Experimenter July 1949
Measuring Noise Levels On
Frequency-Modulated Transmitters - GenRad Experimenter Aug 1949
General Purpose A-M
Standard-Signal Generator - GenRad Experimenter Sept 1949
A Smaller Variac Speed Contro -
GenRad Experimenter Oct 1949
A Simple Standard-Signal Generator
For F-M Broadcast Use - GenRad Experimenter Nov 1949
A Precision Attenuator Having A
Wide Frequency Range - GenRad Experimenter Dec 1949
1950
Simple, Complete Coaxial Measuring
Equipment For The U-H-F Range - GenRad Experimenter Jan 1950
A New Bridge For The Measurement
Of Impedance Between 10 And 165 MC - GenRad Experimenter Feb 1950
A Standard-Signal Generator For
Frequencies Between 50 And 920 MC - GenRad Experimenter March 1950
The Type 1803-A Vacuum-Tube
Voltmeter A Quality Product At A Moderate Price - GenRad Experimenter
April 1950
A Direct-Reading
Impedance-Measuring Instrument For the U-H-F Range - GenRad Experimenter
May 1950
35 Years Of Instrument Manufacture
- GenRad Experimenter June 1950
A Bolometer Bridge For The
Measurement Of Power At High Frequencies - GenRad Experimenter July 1950
An Audio-Frequency Signal
Generator For Non-Linear Distortion Tests - GenRad Experimenter Aug 1950
Improvements In The Counting-Rate
Meter - GenRad Experimenter Sept 1950
Light Meter For Electronic Flash
Photography - GenRad Experimenter Oct 1950
U-H-F Measurements With The Type
874-LB Slotted Line - GenRad Experimenter Nov 1950
A Wide-Frequency-Range Bridge
Oscillator - GenRad Experimenter Dec 1950
1951
A Versatile Power Amplifier - Jan 1951
Type 1612-AL R-F Capacitance Meter
- GenRad Experimenter Feb 1951
Intermodulation Distortion -
GenRad Experimenter March 1951
A Dynamic Microphone For The
Sound-Level Meter - GenRad Experimenter April 1951
An Improved Variac Speed Control -
GenRad Experimenter May 1951
The New Type 1432 Decade Resistors
- GenRad Experimenter June 1951
New Unit Instruments Power
Supplies-Modulator - GenRad Experimenter July 1951
A Sample Holder For Solid
Dielectric Materials - GenRad Experimenter Aug 1951
An Octave-Band Analyzer For Noise
Measurements - GenRad Experimenter Sept 1951
A New Push-Pull Amplifier Circuit
- GenRad Experimenter Oct 1951
A 500-Volt Megohmmeter For
Insulation Testing - GenRad Experimenter Nov 1951
A Generator Of Electrical Noise -
GenRad Experimenter Dec 1951
1952
Versatile Resistance Limit Bridge
Doubles As Laboratory Standard - GenRad Experimenter Jan 1952
The Unit Crystal Oscillator--A
Simplified Frequency Standard For The Small Laboratory - GenRad
Experimenter Feb 1952
Type 1551-A Sound-Level Meter -
GenRad Experimenter March 1952
The Sound-Survey Meter - GenRad
Experimenter April 1952
A Three-Quarter Horespower Variac
Motor Speed Control - GenRad Experimenter May 1952
Standardized Terminals And
Connectors - GenRad Experimenter June 1952
Standardized Terminals And
Connectors Part II - GenRad Experimenter July 1952
A Guard Circuit For The
Capacitance Bridge - GenRad Experimenter Aug 1952
The Vacuum-Tube Bridge And Its
Accessories - GenRad Experimenter Sept 1952
New Coaxial Accessories--Adpaptors,
Line Stretcher, Component Mount, Balun, Terminations, And Insertion Unit
- GenRad Experimenter Oct 1952
A New Series Of Standard Inductors
- GenRad Experimenter Nov 1952
A New Comparison Bridge For The
Rapid Testing Of Components - GenRad Exeperimenter Dec 1952
1953
A New Unit Oscillator-50 To 250 Mc (Type
1215-A) - GenRad Experimenter Jan 1953
Type 1212-A Unit Null Detector -
GenRad Experimenter Feb 1953
Transistor Measurements With The
Vacuum-Tube Bridge - GenRad Experimenter March 1953
A New Standard Of Reliability In
Variable Autotransformers Variac With Duratrak - GenRad Experimenter
April 1953
A New 2-Ampere Variac Twice The
Power For The Same Price - GenRad Experimenter May 1953
Approximate Frequency Analysis
From Weighting-Network Data In Acoustic Noise Measurements - GenRad
Experimenter June 1953
A Simplified System Of Wave
Analysis For Production Testing - GenRad Experimenter July 1953
Improved Accuracy And Convenience
Of Measurements With Type 1602-B Admittance Meter In VHF And UHF Bands -
GenRad Experimenter Aug 1953
A Unit Oscillator For The 0.5- To
50-MC Range - GenRad Experimenter Sept 1953
New Adaptors For VHF And UHF-TV
Coaxial Transmission Lines - GenRad Experimenter Oct 1953
A Laboratory Amplifier For Audio
And Ultrasonic Frequencies - GenRad Experimenter Nov 1953
Five New Variac Speed Controls
Round Out The Line - GenRad Experimenter Dec 1953
1954
New Precision Capacitors - GenRad
Experimenter Jan 1954
Come To The Fair - GenRad
Experimenter Feb 1954
Pulses In A Small Package-A Pulse
Generator For The Unit Line - GenRad Experimenter March 1954
A Balanced Modulator For Pulse
Applications - GenRad Experimenter April 1954
A New Sensitive, High-Frequency
General-Purpose Detector - GenRad Experimenter May 1954
The Type 1304-B Beat-Frequency
Audio Generator - GenRad Experimenter June 1954
An Accurate, High-Speed, Automatic
Line-Voltage Regulator - GenRad Experimenter July 1954
A Pocket-Size Transistor
Oscillator For Audio-frequency Testing - GenRad Experimenter Aug 1954
Sound Measurements At Very High
Levels - GenRad Experimenter Sept 1954
Unmounted Motor Speed Controls For
Assembly Into Other Equipment - GenRad Experimenter Oct 1954
Motor Drives For Precisions Dials
And Beat-Frequency Oscillators - GenRad Experimenter Nov 1954
Improved Slotted Line Increases
Accuracy And Convenience Of Coaxial Line Measurements - Dec 1954
1955
The New 970-Series Potentiometers -
High-Quality Performance At Moderate Prices - GenRad Experimenter Jan
1955
A 900-2000 Mc Unit Oscillator -
GenRad Experimenter Feb 1955
A Standard Signal Generator For
The 900- To 2000-MC Range - GenRad Experimenter March 1955
A New System For Automatic Data
Display - GenRad Experimenter April 1955
Unit R-C Oscillator - 20 Cycles to
500 KC - GenRad Experimenter May 1955
1915-1955 - GenRad Experimenter
June 1955
The Type 1603-A Z-Y Bridge -
GenRad Experimenter July 1955
An Accurate Voltage Divider For DC
And Audio Frequencies - GenRad Experimenter Aug 1955
A Calibrator For Aircraft Fuel
Gages - GenRad Experimenter Sept 1955
New Variac Speed Controls In 1 And
1 1/2 hp Ratings - GenRad Experimenter Oct 1955
A New Circuit For Amplitude
Comparison - GenRad Experimenter Nov 1955
The Type W5 Variac-A New And
Better Variable Autotransformer - GenRad Experimenter Dec 1955
1956
New Models Of The "Stripped-Down" Variac
Speed Controls - GenRad Experimenter Jan 1956
The Measurement Of Impact Noise -
GenRad Experimenter Feb 1956
A New, High-Sensitivity
Electrometer - GenRad Experimenter March 1956
A High-Precision Impedance
Comparator - GenRad Experimenter April 1956
A Versatile Generator For
Time-Domain Measurements - GenRad Experimenter May 1956
A High-Precision Calibrator For
Frequency And Time - GenRad Experimenter June 1956
New Decade Capacitors With
Polystyrene Dielectric - GenRad Experimenter July 1956
Motor Drives For W-Series Variacs
- GenRad Experimenter Aug 1956
New Television Transmitter Monitor
- GenRad Experimenter Sept 1956
A New Type Of Variable Delay Line
- GenRad Experimenter Oct 1956
Militarized Line Voltage Regulator
- GenRad Experimenter Nov 1956
Random Noise Sweep Drives - GenRad
Experimenter Dec 1956
1957
The Sound-Level Meter As An
Audio-Frequency Voltmeter And Amplifier - GenRad Experimenter Jan 1957
Radio Engineering Show-San
Francisco Office - GenRad Experimenter Feb 1957
G-R Instruments Are Built To Last
- GenRad Experimenter March 1957
New "50" Size Variacs-Types W50
And W50H - GenRad Experimenter April 1957
The Measurement Of Cable
Characteristics - GenRad Experimenter May 1957
The Measurement Of Cable
Characteristics (Part II) - GenRad Experimenter June 1957
New, Silvered-Mica, Standard
Capacitors, Type 1409 - GenRad Experimenter July 1957
The Measurement Of Cable
Characteristics (Part IV) - GenRad Experimenter Aug 1957
The Phase Angle Of Potentiometers
Used As Rheostats - GenRad Experimenter Sept 1957
Transistor Testing With Type 874
Coaxial Elements - GenRad Experimenter Oct 1957
Automatic Testing Of
Printed-Circuit Components For The IBM Sage Computer - GenRad
Experimenter Nov 1957
On The Tracking Of Satellites -
GenRad Experimenter Dec 1957
1958
A New Unit Oscillator, 180 To 600 Mc -
GenRad Experimenter Jan 1958
The Type P-582 Capacitance Bridge
- GenRad Experimenter Feb 1958
A Transfer-Function Meter For The
VHF-UHF Range - GenRad Experimenter March 1958
New Broadcast Monitors Add
Convenience In Operation And Maintenance - GenRad Experimenter April
1958
The Measurement Of Dielectric
Properties In The 200-5000 MC Range - GenRad Experimenter May 1958
Standard Time Signals - GenRad
Experimenter June 1958
New Standard Frequency Multipliers
- GenRad Experimenter July 1958
The Type W20-A New 20-Ampere
Variac Autotransformer - GenRad Experimenter Aug-Sept 1958
Improved Performance Plus A New
Look For The Sound-Level Meter - GenRad Experimenter Oct 1958
Complete Assembly For Capacitance
Measurements At One Megacycle - GenRad Experimenter Nov 1958
How To Kill Time-Accurately! -
GenRad Experimenter Dec 1958
1959
New Type W10 Variac Autotransformer -
GenRad Experimenter Jan 1959
An Improved Pulse Generator With
15-Millimicrosecond Rise Time - GenRad Experimenter Feb 1959
A New Universal Impedance Bridge -
GenRad Experimenter March 1959
A Militarized, Three-Phase,
Line-Voltage Regulator - GenRad Experimenter April 1959
Type 1607-A Transfer-Function And
Immittance Bridge - GenRad Experimenter May 1959
A Graphic Level Recorder With High
Sensitivity And Wide Ranges - GenRad Experimenter June 1959
A Close Look At Connection Errors
In Capacitance Measurements - GenRad Experimenter July 1959
The Type 1305-A Low-Frequency
Oscillator - GenRad Experimenter Aug-Sept 1959
A Time/Frequency Calibrator Of
Improved Stability - GenRad Experimenter Oct 1959
A Bridge For The Precise
Measurement Of Inductance - GenRad Experimenter Nov 1959
A New Analyzer For Sound And
Vibration - GenRad Experimenter Dec 1959
1960
A New Generator Of Random Electrical
Noise - GenRad Experimenter Jan 1960
A Beat-Frequency Generator For
Audio, Ultrasonic, And Video Frequencies - GenRad Experimenter Feb 1960
General Radio At Concord - GenRad
Experimenter March 1960
Impedance Comparator Adaptable To
Many Kinds Of Measurements And Tests - GenRad Experimenter April 1960
Rapid VSWR Measurements With The
Admittance Meter - GenRad Experimenter May 1960
Standards And Accuracy - GenRad
Experimenter June 1960
Measurements Of The
Equivalent-Circuit Parameters Of Tunnel Diodes - GenRad Experimenter
July-Aug 1960
New Eyes For Modern Industry - The
Type 1531-A Strobotac - GenRad Experimenter Sept 1960
Connection Errors In Inductance
Measurement - GenRad Experimenter Oct 1960
Little Dithers - A Small,
Self-Contained, Self-Excited Vibration Calibrator - GenRad Experimenter
Nov-Dec 1960
1961
An Analog Frequency Meter For Modern
Measurements - GenRad Experimenter Jan-Feb 1961
A New UHF Signal Source - GenRad
Experimenter March 1961
The New GR Frequency Standard -
GenRad Experimenter April 1961
A Frequency Counter With A Memory
And With Built-In Reliability - GenRad Experimenter May 1961
A New 10-Microfarad Capacitance
Standard - GenRad Experimenter June 1961
A Tuned Amplifier And Null
Detector With One-Microvolt Sensitivity - GenRad Experimenter July 1961
Type 1551-C Sound-Level Meter -
GenRad Experimenter Aug 1961
A Remote Control For Variac
Autotransformers - GenRad Experimenter Sept 1961
New And Improved Coaxial
Connectors - GenRad Experimenter Oct 1961
The Type 1553-A Vibration Meter -
GenRad Experimenter Nov 1961
Frequency Stability Measurements
Of Standard-Signal Generators - GenRad Experimenter Dec 1961
1962
A Test Oscillator For S-Band
Measurements - GenRad Experimenter Jan-Feb 1962
A Precise, General-Purpose
Impedance Bridge - GenRad Experimenter March 1962
A Five-Digit Solid-State Counter
For Frequency Measurements To 220 kc - GenRad Experimenter April 1962
A New System For Measuring The
Inductance Of Iron-Core Coils - GenRad Experimenter May 1962
VLF Standard-Frequency Calibration
- GenRad Experimenter June 1962
Coaxial Equipment With
Locking-Type Connectors - GenRad Experimenter July 1962
Accuracy, Precision, And
Convenience For Capacitance Measurements - GenRad Experimenter Aug-Sept
1962
New, Compact, Octave-Band Analyzer
- GenRad Experimenter Oct 1962
New PZT Ceramic Vibration Pickup
And Control Box For Vibration Measurements - GenRad Experimenter Nov
1962
A New Converter For Frequency
Measurements To 500 Mc - GenRad Experimenter Dec 1962
1963
A Standard Sweeping-Frequency Signal
Generator - GenRad Experimenter Jan 1963
A Radically New Coaxial Connector
For High-Precision Measurements - GenRad Experimenter Feb-Mar 1963
Absolute Calibration Of PZT
Microphones - GenRad Experimenter April-May 1963
Zero To 300 kc With Five-Digit
Accuracy - GenRad Experimenter June 1963
Higher Accuracy, Higher
Frequencies With New Electronic Voltmeter - GenRad Experimenter July
1963
A Highly Stable Reference Standard
Capacitor - GenRad Experimenter Aug 1963
New Performance, New Convenience
With The New Sound And Vibration Analyzer - GenRad Experimenter Sept-Oct
1963
Precision Coaxial Equipment; the
900 Series - GenRad Experimenter Nov 1963
High-Speed Digital-To-Analog
Converter With Storage - GenRad Experimenter Dec 1963
1964
A New 200-VA Audio Generator - GenRad
Experimenter Jan 1964
GR's New Bolton Plant - GenRad
Experimenter Feb 1964
IEEE-1964 - GenRad Experimenter
March 1964
Recording Wave Analyzer - New Wave
Analyzer Has 3 Bandwidths, 80-DB Dynamic Range - GenRad Experimenter
April 1964
A Generator Of AC Transients -
GenRad Experimenter May 1964
The Stability Of
Standard-Frequency Oscillators - GenRad Experimenter June 1964
A Bridge To Teraohm Territory -
GenRad Experimenter July 1964
Type 1680-A Automatic Capacitance
Bridge Assembly - GenRad Experimenter Aug 1964
Coherent Decade Frequency
Synthesizers-A Modular Design - GenRad Experimenter Sept 1964
A Compact, Inexpensive Sound-Level
Meter - GenRad Experimenter Oct-Nov 1964
Improved Performance From The Unit
Pulse Generator - GenRad Experimenter Dec 1964
1965
A Slotted Line Recorder System - GenRad
Experimenter Jan 1965
A New Approach To Precision Time
Measurements - GenRad Experimenter Feb-March 1965
The Automatic Capacitance Bridge -
GenRad Experimenter April 1965
Pulses To Order - GenRad
Experimenter May 1965
A New Low-Noise Preamplifier -
GenRad Experimenter June 1965
Vibration Measurements With The
Sound-Level Meter - GenRad Experimenter July 1965
A Modern, Wide-Range, RC
Oscillator - GenRad Experimenter Aug 1965
10-Mc Solid State Counter - GenRad
Experimenter Sept 1965
New Standard Resistors - GenRad
Experimenter Oct 1965
12-MC Coherent Decade Frequency
Synthesizer - GenRad Experimenter Nov-Dec 1965
1966
A New Series Of High-Performance
Line-Voltage Regulators - GenRad Experimenter Jan 1966
Input Noise - GenRad Experimenter
Feb 1966
All-Solid-State, Low-Distortion
Oscillator - GenRad Experimenter March 1966
Flash!...A New Strobotac
Electronic Stroboscope - GenRad Experimenter April 1966
Calibration Standards For
Precision Coaxial Lines - GenRad Experimenter May 1966
The Measurement Of Electrolytic
Capacitors - GenRad Experimenter June 1966
VHF Pulse Generator - GenRad
Experimenter July 1966
Coaxial Microwave News-The
Improved GR874 Slotted Line - GenRad Experimenter Aug 1966
70-MHz Sythesizer Joins The Family
- GenRad Experimenter Sept 1966
Automatic Capacitor-Testing
Systems - GenRad Experimenter Nov-Dec 1966
1967
The Use Of Frequency Synthesizers For
Precision Measurements Of Frequency Stability And Phase Noise - GenRad
Experimenter Jan 1967
RC-Oscillator Synchronization -
GenRad Experimenter Feb 1967
A New 500-MHz Standard-Signal
Generator - GenRad Experimenter March 1967
Coaxial Microwave News-New GR900
Components - GenRad Experimenter April 1967
The New General Radio Microphone -
GenRad Experimenter May-June 1967
The 1003 Standard-Signal Generator
- GenRad Experimenter July-Aug 1967
Capacitance Standards With
Precision Connectors - GenRad Experimenter Sept 1967
Considerations In The Choice Of A
Line-Voltage Regulator - GenRad Experimenter Oct 1967
A Programmable 20-MHz
Counter-Timer Using Integrated Circuits - GenRad Experimenter Nov-Dec
1967
1968
Random-Noise Generators - GenRad
Experimenter Jan 1968
An SWR Meter For Precision
Measurements - GenRad Experimenter Feb 1968
A Receiver For Precise Time
Calibrations - GenRad Experimenter March 1968
A Precision Sound-Level Meter -
GenRad Experimenter April 1968
An Exercise In Voltage Division -
GenRad Experimenter May 1968
The Recipromatic Counter - GenRad
Experimenter June-July 1968
A Unique DC Voltmeter - GenRad
Experimenter Aug-Sept 1968
High Degree Of Frequency
Resolution Achieved Through Use Of Syncable Oscillator In Closed Loop -
GenRad Experimenter Oct 1968
Pulse And Frequency Response -
GenRad Experimenter Nov-Dec 1968
1969
The Digital Divider - GenRad
Experimenter Jan-Feb 1969
The New Sweep-Frequency
Reflectometer - GenRad Experimenter March-April 1969
New-Generation Acoustical Analyzer
- GenRad Experimenter May-June 1969
The Counter-Punch - GenRad
Experimenter July-Aug 1969
Detailed Viewing In Ambient
Brightness - GenRad Experimenter Sept-Oct 1969
Why Computers In Measurement
Systems? - GenRad Experimenter Nov-Dec 1969
1970's
The Economy Of Computer-Controlled
Measurements - GenRad Experimenter Jan-Feb 1970
Toward A More Useful Referenece
Standard Resistor - GenRad Experimenter March-June 1970
Signal Analysis With Digital
Time-Series Analyzers - GenRad Experimenter July-Sept 1970
Audiometric Measurement: 150 Years
Of Applied Research - GenRad Experimenter Oct-Dec 1970
GenRad Experimenter Autumn 1972
GenRad Experimenter Summer 1972
GenRad Experimenter Autumn 1973
GenRad Experimenter Spring 1973
GenRad Today Winter 1973 - GenRad
Experimenter Winter 1973
GenRad Experimenter March 1974 |
