The RCA "Licensee Bulletins" (also known as "Booklets") were sent to licensees of the RCA patent pool. They were mostly papers describing recent technology advances developed at the RCA Laboratories. Some verged on the theoretical, but most were practically-oriented, describing specific circuits or equipment that would interest the licensees. The bulletins here cover the years 1950 to 1957.
The Licensee Patent Bulletins are summaries of new or expired patents in the RCA patent pool. Note that patents from other companies show up here, due to cross-licensing arrangements. Summary abstracts of new patents are given. To view or download the full patents, you can go to Google Patents and type in the patent number.
Another batch of Licensee Bulletins from the Von Campbell collection has been discovered, and added here - note the 6/20 date.LB-803 Gaseous Discharge Noise Sources for SHF
LB-804 A High-Performance Transistor with Wide Spacing Between Contacts
LB-805 Effects of Contact Pressure on Transistor Gain
LB-806 Licensee Patent Bulletin 50-3
LB-809 Geometrical Considerations of an RCA Tri-Color Kinescope
LB-812 An Automatic Nonlinear Distortion Analyzer
LB-815 A Center-Tuning Circuit for FM Detectors
LB-816 Coaxial Line Triple-Tuned UHF Tuner
LB-818 An Unobtrusive Dynamic Pressure Microphone
LB-820 A Laboratory Approach to the Reduction TV Receiver Chassis Radiation from the Local Oscillator
LB-821 Licensee Patent Bulletin 50-4
LB-822 Manufacture of an RCA Developmental 3-Gun Tricolor Kinescope
LB-823 A Noise-Inversion Circuit for Improved Noise Immunity in TV Receivers
LB-824 Use of New Low-Noise Twin Triode in TV Tuners
LB-825 Columbate Dielectrics
LB-826 A Tristimulus Photometer
LB-827 A High-Voltage Cold-Cathode Rectifier
LB-828 Remote Control for Television Receivers
LB-829 A Bandpass Mechanical Filter for 100 kc
LB-830 A 45-Degree Reflection-Type Color Kinescope
LB-831 On Extending the Operating Voltage Range of Electron Tube Heaters
LB-835 An Electronic Thickness Gauge for Very Thin Metal Foils
LB-836 TV Receiver Signal Circuits and AGC Considerations for Impulse Noise Immunity
LB-837 Tests of Means for Reducing Visibility of Line Structure on TV Receivers
LB-838 A Color Synchronization Circuit for RCA Color System TV Receivers
LB-840 A Calibrated Continuously-Variable Sampling-Wave Phase Shifter
LB-844 The Plasmatron a Continuously-Controllable Gas-Discharge Developmental Tube
LB-845 Compound Direct Radiator Loudspeaker
LB-848 Elimination of Moire Effects in Tri-Color Kinescopes
LB-849 A Method of Improving the Electrical and Mechanical Stability of Point-Contact Transistors
LB-850 The Decay and Recovery of the Pulsed Emission of the Oxide-Coated Cathode
LB-851 An Industrial Television System
LB-852 Electronic Overload Protection Circuit for Sensitive Current Meters
LB-853 Interlaced Sampling-Signal Generator
LB-853A Modification of Interlaced Sampling-Signal Generator
LB-854 Performance of the Vidicon a Small Developmental TV Camera Tube
LB-855 Frequency Control of Modulated Magnetrons by Resonant Injection System
LB-856 Design Data for Horizontal Rhombic Antennas
LB-859 A Video Test Signal Generator
LB-861 Heater-Cathode Leakage Hum Reduction by Means of a Shielded Heater
LB-862 A Survey of Transistor Development
LB-863 A Crystal Ringing Circuit for Color Synchonization
LB-865 Transistor Oscillators
LB-866 Noise Factor Considerations and Measurement Techniques at UHF
LB-870 Junction Transistor Equivalent Circuits and Vacuum Tube Analogy
LB-871 Dynamic Test Set for Transistors
LB-872 Balance Measurements on Balun Transformers - errata added to page 2
LB-875 Transistor Trigger Circuits
LB-876 Noise Factor Measurements of Transistors
LB-877 Deflection Systems with Regulated Kickback HV Supplies for Tri-Color Kinescopes
LB-878 A Vestigal Sideband Filter
LB-879 Rhombic Antennas For UHF Television
LB-881 Determination of Orientation and Deformation of Germanium Crystals
LB-883 A Sweep Method for Measuring Envelope Delay
LB-884 Some Applications of Permanently Magnetized Ferrite Magnetostrictive Resonators
LB-885 Electrical Measurements on Germanium
LB-886 Low-Temperature Electrical Measurements on Semiconductors
LB-887 Reflexed Intercarrier Sound
LB-889 Application of Linear Active 4-Terminal Network Theory to Transistors
LB-891 Laboratory Equipment for Germanium Purification
LB-892 Preparation of Single Crystals of Ge and Si
LB-893 Experimentally Determined Radiation Characteristics of Conical and Triangular Antennas
LB-894 Ceramic-Metal Seals of the Tungsten-Iron Type
LB-896 Resistivity Striations in Single-Crystal Ge
LB-897 Methods of Processing Ag-Mg Secondary Emitters for Electron Tubes
LB-898 Progress Report on Transistor Research and Circuit Applications
LB-899 Theoretical Resistivity and Hall Coefficient of Impure Ge Near Room Temperature
LB-902 Design Considerations for Series Heater Strings in TV Receivers
LB-903 A Germanium NPN Junction Transistor by the Alloy Process
LB-904 Licensee Patent Bulletin 52-4
LB-905 Power Junction Transistors by the Alloy Process - errata added to page 2
LB-906 Symmetrical Properties of Transistors and Their Applications
LB-907 A Study of Transistor Circuits for TV Receivers
LB-908 Factors in the Design of Point-Contact Transistors
LB-909 The Application of Transistor to an Industrial TV Sychronizing Generator
LB-910 Circuits for Reception of NTSC (Feb. 2, 1953) Color TV Signals
LB-911 A UHF Balun.pdf
LB-912 Licensee Patent Bulletin 53-1
LB-913 A Vidicon Camera Adaptor for Television Receivers
LB-914 A Symmetrical Transistor Phase Detector for Horizontal Synchronization
LB-915 A PNP Triode Alloy Junction Transistor for RF Amplification
LB-916 The Variation of Current Gain with Junction Shape and Surface Recombination in Alloy Transistors
LB-917 On the Variation of Junction Transistor Current-Amplification Factor with Emitter Current
LB-918 Circuit Diagram-RCA Developmental Color TV Receiver
LB-919 An Experimental Transistor Personal Broadcast Receiver
LB-920 Licensee Patent Bulletin 53-2
LB-921 A Capacitive Tuned UHF Tuner
LB-922 Continuous-Process Apparatus for Growing Single-Crystal Ge
LB-923 Modulated Transistor Oscillators and their Applications
LB-924 A Delay Equalizer for Color TV
LB-925 RCA Developmental Color Television Receiver
LB-926 Recrystalization of Germanium from Indium Solutions
LB-927 A Series Noise Inverter for TV Receiver Impulse-Noise Immunity
LB-928 Improving the Transient Response of Television Receivers
LB-929 Licensee Patent Bulletin 53-3
LB-930 Design of Video-Amplifier Peaking Circuits for Optimum Transient Response
LB-931 Miniature IF Transformers
LB-932 A Colorplexer for the Generation of Color TV Signals
LB-933 Measurement of Sweep and Video Circuit Interference Influence of TV Receivers on AM Receivers
LB-934 Measurement of Minority Carrier Lifetime and Surface Effects in Junction Devices
LB-936 Investigation of UHF Television Amplifier Tubes
LB-939 The Tacitron A low-Noise Thyratron
LB-940 HF Operation of P-Type Point-Contact Transistors
LB-941 A Switched-Zone Furnace for Germanium Purification
LB-942 Licensee Patent Bulletin 54-1
LB-944 Studies of the Interface Layer in Oxide Cathodes
LB-946 Factors in the Design of Keyed Clamping Circuits
LB-947 A Study of the Etching Rate of Germanium
LB-948 Microscopic Examination of Germanium Crystals and Transistors
LB-949 Some Properties of Ge-Si Alloy Semiconductors
LB-950 Design of IF Amplifiers for Color Television Receivers
LB-951 Color Subcarrier Frequency Measurement Equipment
LB-952 A Silicon NPN Junction Transistor by the Alloy Process
LB-953 The Effective Surface Recombination of a Ge Surface
LB-954 Licensee Patent Bulletin-Farnsworth Patents
LB-955 Licensee Patent Bulletin 54-2
LB-956 Saturation Current in Alloy Junctions
LB-957 A Developmental Pocket-Size Broadcast Receiver
LB-958 An Experimental Automobile Receiver Employing Transistors
LB-959 High-Level Triode Color Demodulator
LB-960 A Convergence Circuit for the RCA Developmental 21-Inch Color Kinescope
LB-961 An Analysis of the Bifilar-T Trap Circuit
LB-962 A Simplified High-Performance 21-inch Develpmental Color TV Receiver
LB-963 Comparative HF Operation of Junction Transistors Made of Different Semiconductor Materials
LB-964 Investigations of Noise in AF Amplifiers Using Junction Transistors
LB-965 Licensee Patent Bulletin 54-3
LB-968 Selectivity and Transient Response Synthesis
LB-969 Licensee Patent Bulletin 54-4
LB-972 Unusual Assembly Methods Used in Developing a New Thyratron
LB-973 Technique Fabrication Small Cylindrical Grids if Novel Design for Use in Pencil Tubes
LB-974 Transistorized Sync Separator Circuits for TV Receivers
LB-975 Class B Operation of AF Junction Transistors
LB-978 An Experimental High-Speed Photo-Resist Technique for Printed Circuits
LB-985 Transistor Fabrication by the Melt-Quench Process
LB-988 Alloyed Junction Type NPN Germanium-Silicon Transistors
LB-1002 Improvements in Color Kinescopes Through Optical Analogy
LB-1004 Miniature Loudspeakers for Personal Radio Receivers
LB-1005 A Variable-Capacitance Germanium Junction Diode for UHF
LB-1012 A 20-Watt Transistor Audio Amplifier
LB-1021 Design Considerations in Class B Complimentary Symmetry Circuits
LB-1022 Transistor Audio Amplifiers
LB-1025 Equipment for Displaying Transistor Characteristics
LB-1026 Focusing-Grill Color Kinescopes
LB-1029 Recent Improvements in the 21AXP22 Color Kinescope
LB-1032 Design Considerations in the First Stage of Transistor Receivers
LB-1033 Field-Intensity Measuerments on Induction-Heating Equipment ·
LB-1034 Growth of Silicon Crystals for Transistor Applications
LB-1035 Transistorized High Voltage Oscillator Power Supply
LB-1036 Crystal Puller of Czochralski Type for Ge or Si with 60 Cycle 3-Phase Heater
LB-1037 The Soldered Transistor
LB-1040 IF Transistor Construction and Production
LB-1042 Transistor Input Stage for Phonograph Pickups
LB-1043 The Tricolor Vidicon a Developmental Camera Tube for Color TV
LB-1044 Simultaneous Signal Separation in the Tricolor Vidicon
LB-1045 A Drift Transistor for High Frequency Applications
LB-1049 A Miniature Vidicon of High Sensitivity
LB-1050 Transistorized TV Cameras Using the Miniature Vidicon ·
LB-1051 An Improved Low-Capacitance Probe
LB-1052 Large-Area Germanium Power Transistors
LB-1053 Uni-Pressure Microphone
LB-1054 A 6-Transistor Portable Receiver Employing a Complementary Symmetry Output Stage
LB-1055 Reduction of Co-Channel TV Interference by Precise Frequency Control of TV Picture Carriers
LB-1056 Thermal Stability of Junction Transistors and its Effect on Maximum Power Dissipation
LB-1057 Concentric-Shear Mode 455KC Electromechanical Filter
LB-1058 Microwave Noise Source Modulator and Power Supply
LB-1060 Design Considerations of TV Antenna-Multiplex Systems
LB-1061 Analysis of Transistor Oscillators for Broadcast Receivers
LB-1062 A Monostable Multivibrator Circuit Using Complementary Transistors
LB-1063 Envelope Distortion in Transistor-Tuned Amplifiers
LB-1064 Spreading of Indium over Ge Surfaces in the Alloy Process
LB-1067 A Constant-Input-Impedance RF Amplifier for VHF TV Receivers
LB-1068 Galactic Noise-An Important Consideration of VHF TV Tuners
LB-1069 Design Considerations for Direct-Coupled Transistor Amplifiers
LB-1070 A Transistorized Horizontal-Deflection System
LB-1071 Transistor Receiver Video Amplifiers ·
LB-1072 Circuit Considerations for Audio-Output Stages Using Power Transistors
LB-1073 Influence of Surface Oxidation on acb of Germanium PNP Transistors
LB-1074 Methods for Determining AM Rejection Performance of FM Detectors
LB-1075 A Transistorized FM Sound Detector Circuit for TV Receivers
LB-1077 The Equivalent Circuit of the Drift Transistor
LB-1078 The Thyristor-A New High-Speed Switching Transistor
LB-1079 An Investigation of Cross Modulation in Heterodyne Interferences in Transistor IF Amplifiers
LB-1080 Transistor Switching Performance from Characteristic Curves
LB-1081 A Basic Tester for Transistors
LB-1082 High-Power Transistor Audio Amplifiers
LB-1083 A Phase-Regulated Transistor Power Supply
LB-1084 A Carrier Energized Bi-Stable Circuit Using Variable-Capacitance Diodes
LB-1085 Design Considerations of Transistorized Picture IF Amplifiers
LB-1086 FM System Based on Synthesized Wave and Phase-Shift Detection