VLA Electronics Memoranda

Memo Submission

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Memo Number Title Author(s) Date Original PDF
1 Sensitivity Measurements of Mixers for the VLA LO System J. L. Dolan 02/28/67
2 Consideration of a Microwave Link IF Transmission System S. Weinreb 05/10/68
3 VLA Correlator Design Studies J. Rehr 09/15/67
4 A Test Set for VLA Correlator Design Studies J. Rehr 09/15/67
5 Comparison of Modulation Systems for Transmission Through Dispersive Cables S. Weinreb 11/29/67
6 Prototype IF Transmission System S. Weinreb 12/19/67
7 Equalization and Signal-To-Noise Problems in the IF Transmission System D. Buhl 02/06/68
8 Interim Report on Prototype Local Oscillator System H. Beazell 03/09/68
9 Status of IF Transmission System S. Weinreb 03/12/68
10 Phase and Group Delay of Coaxial Cable S. Weinreb 03/15/68
11 Phase Equalization in the VLA IF System D. Buhl -
101 Front End Options S. Weinreb 4/10/72
102 Waveguide Signal Transmission System S. Weinreb 8/17/72
103 Digital Delay System for the VLA A. Shalloway, P. Camana 9/22/72
104 Spectral Line Correlator for the VLA D. Buhl, A. Shalloway 10/20/72
105 Circular Waveguide and Antenna Coupling for VLA IF Transmission System R. Predmore 1/26/73
106 Leaks in Dewars, Pressurized Waveguide and Helium Refrigerator Lines D. L. Thacker 1/19/73
107 Tolerances on the Phase and Amplitude Responses of the VLA Receiving System A. R. Thompson 02/73
108 Frequency Surveillance at VLA Site (With 4/4/73 Addendum) J. Dolan 02/27/73
109 Delay Errors in the VLA A. R. Thompson 3/19/73
110 The Effect of Radio Interference on the VLA P. J. Napier 3/28/73
111 Design of the Electronic System To Minimize the Effects of Interference A. R. Thompson 03/73
112 Tolerances in the Two-Bit Sampler A. R. Thompson 4/9/73
113 Digital Delay and Multiplier System A. Shalloway, R. Escoffier 05/73
114 Phase Quadrature Requirements B. G. Clark 07/73
115 Bandwidths for the VLA Receiving System A. R. Thompson 7/18/73
116 Some Tolerances Relating To Spurious Responses (with Addendum) A. R. Thompson 9/6/73
117 Report on BTL-NRAO Waveguide Review Meeting P. J. Napier 10/31/73
118 The Bandwidth Effect ('Delay Beam') for a Synthesis Array and Related Requirements for the IF Filter Characteristics A. R. Thompson 11/13/73
119 OMQ Rack and Panel Connector Tests H. L. Beazell 12/3/73
120 Loss and Coupling Values in the VLA Transmission System (with Addendum) R. Predmore 8/8/74
121 Reliability Study of VLA Digital Delay and Multiplier System R. Escoffier 1/4/74
122 Phase Switching in the VLA A. R. Thompson 1/16/74
123 Design Specifications for Feed and Rack Support Structure for VLA Antenna (Rev. #1) P. J. Napier 3/5/74
124 The Design of the VLA Fringe Rotator System A. R. Thompson 10/16/74
125 Notes on Directional Couplers for 60-mm Circular Waveguide A. Parrish 10/74
126 NRAO-VLA Antenna Control Test Unit R. Escoffier 10/74
127 VLA Stand Alone Computer Control J. Greenberg 11/74
128 Circular-to-Rectangular Waveguide Couplers C. R. Predmore 11/74
129 The Response of the VLA To Interfering Signals A. R. Thompson 01/75
130 Front End To LO/IF Interference Tests S. Weinreb, W. Dumke 03/75
131 A Combined Continuum and Spectral Line Digital Delay and Multiplier System A. M. Shalloway 10/75
132 Variable Phase Sampler B. Mauzy, R. Escoffier 01/76
133 The Combined Continuum-Spectral Line Digital Delay and Multiplier System R. Escoffier 2/20/76
134 Computer Control and Processor for VLA Digital Delay-Multiplier System A. M. Shalloway 02/76
135 Electronic-System Cabling in the Control Building A. R. Thompson 02/76
136 An Analysis of Signal Processing in the VLA Correlator L. D'Addario 03/76
137 Modification of the Frequency Conversion Scheme at the Antennas A. R. Thompson 4/15/76
138 Modes, Subarrays and Integration Times of the VLA Delay-Multiplier System A. M. Shalloway 5/3/76
139 Results of EMI Surveillance G. Bonebrake 5/26/76
140 Digital Correlator and Integrator Custom Integrated Circuits R. Escoffier 12/76
141 Cross Polarization in a Cassegrain Antenna with a "Tricone" Feed System P. J. Napier 11/29/72
142 Transmit/Receive Changes in the VLAO System R. Predmore 9/24/73
143 VLA Electronics Block Diagrams Revisions S. Weinreb 3/22/74
144 Cooled Mixers and Spurious Signals M. Balister 8/15/74
145 VLA Circular Waveguide System R. Predmore 9/25/74
146 Use of the Waveguide Test Set To Monitor Waveguide Installation Quality A. Parrish 10/15/74
147 Combining the VLA Continuum and Spectral Line Correlators R. Escoffier 8/25/75
148 What To do With All Those Multipliers B. Clark 12/01/75
149 Evaluation of 60-mm Diameter Helix Waveguide VLA Main Transmission Line (Information outdated, reference only.) M. Ogai 04/76
150 A Report on the VLA Waveguide C. R. Predmore 04/76
151 Waveguide System for a Very Large Antenna Array M. Ogai 11/11/76
152 Memo on TEOn Mode Filter Developed by Marconi Research Laboratories M. Ogai 03/77
153 Some Consideration on Stress in the Waveguide M. Ogai 03/77
154 Attenuation Ripple and Phase Stability in VLA Waveguide Transmission System M. Ogai 03/77
155 20-mm Diameter Antenna Waveguide (Information outdated, reference only.) M. Ogai 03/77
156 Millimeter Waveguide Systems in the World M. Ogai 03/77
157 Intermodulation Products at L-Band J. Dolan 05/77
158 Cryogenics Reliability Goals from COMSAT Data S. Maas 07/77
159 The Master Local Oscillator Subsystem A. R. Thompson, L. R. D'Addario 07/77
160 The Effect of Mismatch at the Antenna Modems J. Archer 09/77
161 Tests on Independently-pumped AIL Paramps and Associated EMI Problems M. Sinclair, P. Napier, S. Maas 10/77
162 Estimation of the Accuracy of the Pulse Reflection Test Set for Helix Waveguide Attenuation Measurements J. W. Archer 10/77
163 Suggestions for a New Cooled K- Band Mixer for the VLA Front Ends S. Maas 11/77
164 VLA Phase Stability -- A Visitor's Log J. Granlund 11/77
165 VLA Reliability and Maintenance - an Early Look M. Balister, J. R. Fisher, J. Payne, S. Weinreb 10/77
166 An Analysis of Unifilar and Bifilar Stripping of Helix Waveguide J. W. Archer 11/77
167 The Effects of Waveguide Velocity Dispersion and the Discrete Delay Steps on the Accuracy Measurement of the Visibility Phase A. R. Thompson 01/78
168 Phase Stability of Some Components and Subsystems in VLA Electronics D. Bagri 03/78
169 600-MHz Round-Trip Phase Correction and Effect of Waveguide Ripple and Non-Reciprocity of Path on IF Phase D. Bagri 03/78
170 Gas Tight Waveguide Windows for the VLA Waveguide System J. W. Archer 03/78
171 Closure - Some Examples B. G. Clark 04/78
172 A Synchronous-Pulse Calibration System for the VLA A. R. Thompson 04/78
173 Signal-to-Noise Ratio in Digital Cross-Correlators as a Function of Channel Number L. R. D'Addario 04/78
174 Preliminary Observations of the Navstar I Satellite A. R. Thompson, J. Dolan 06/78
175 Design Considerations for IF Receiver Subsystem L. R. D'Addario 07/78
176 Study of Self-Generated Interference in the VLA at L-Band S. J. Goldstein 08/78
177 Spurious Responses in the VLA Circular Waveguide System J. Archer 08/78
178 Further Observations of the Navstar I Satellite A. R. Thompson 10/78
179 60-mm Helical Couplers R. Predmore 10/77
180 Phase Lock Loop Parameters of F2 and F3 Modules A. R. Thompson 03/79
181 Modifications To the VLA Front Ends for Solar Observations (with Addendum) J. W. Archer 08/79
182 Correlator System Self Test/Self Heal R. P. Escoffier 04/79
183 Harmful Interference Levels for the VLA A. R. Thompson 07/79
184 Vertex Room Temperature Control L. R. D'Addario 06/79
185 Effects of Skewed Sampling Times on the Complex, Three-Level Correlator L. R. D'Addario 8/12/79
186 Correlator Error Due To Gain Calibration Signal L. R. D'Addario 8/17/79
187 Swept-Frequency Tests of the Waveguide Communication Channels T. M. Percival, L. R. D'Addario 10/17/79
188 An Experimental Test of the Response of the VLA To an Interfering Signal A. R. Thompson, T. M. Percival 10/79
189 An Evaluation of the Performance of the VLA Circular Waveguide System J. W. Archer, E. M. Caloccia, R. Serna 02/80
190 Mechanical Measurement of Waveguide Alignment Using "Mouse" - Revised 12-79 M. Ogai 03/76
191 The Sector Coupler - Theory and Performance J. W. Archer, M. Ogai, E. M. Caloccia 01/80
192 Closure Accuracy and Related Instrumental Tolerances (with Addendum) A. R. Thompson 03/80
193 T2 "IF Combiner" Transmit and Receive IF Power Monitor Voltages W. E. Dumke 08/80
194 The Linearity of the Detector in Module F4 A. R. Thompson 08/80
195 The VLA Interference Monitoring System A. R. Thompson, C. D. Barnett 08/80
196 An Analysis of the VLA F/R Drive Dynamics D. Weber, S. Christiansen 10/80
197 Recommendations W. E. Dumke 10/80
198 Hydrogen Maser Clock Trip Report and Procurement Recommendation for the VLA and the Proposed VLBI System W. E. Dumke 10/80
199 Vacuum Tests on Some VLA Front End Dewars M. W. Sinclair 12/80
200 Electronic/Electromechanical Mouse for Remote Sensing of 60 mm Waveguide Helix and Joint Defects W. E. Dumke 12/80
201 IF Transmission Compression Errors and Precision Compression Measurement W. E. Dumke 12/80
202 Directional Frequency Offsets in Round-Trip Phase-Measuring Schemes, With Application To the IRAM Array and the VLA A. R. Thompson 03/81
203 Antenna L.O. Induced Visibility Phase Jumps L. Beno 09/81
204 1.3 and 2 cm Frequency Charts P. A. Lilie 10/81
205 Radio Interference at the VLA Site A. R. Thompson 03/82
206 VLA 327 MHz Prototype Feed System P. J. Napier 05/82
207 The Correlator System for the Very Large Array Radio Telescope C. Broadwell, R. Escoffier 07/82
208 Never Released
209 Never Released
210 Measurement of Potential Interference From the IONDS Transmissions of the Navstar Series of Satellites A. R. Thompson 09/83
211 Radio Interference from High Voltage Power Lines A. R. Thompson 07/84
212 VLA Ku Band Performance at Out-of- Band Frequencies P. A. Lilie 7/22/85
213 Future Front End Development for the VLA P. A. Lilie 9/9/85
214 RFI Survey for the University of Arizona Mt. Graham Radio Observatory Site J. Oty 08/85
215 Data Set for Command & Monitor Data P. Lilie 10/89
216 Closure Errors in the VLA D. Bagri 11/90
217 The Master Rack System Dataset Eprom Upgrade W. Koski 10/91
218 The Antenna System Dataset Eprom Upgrade W. Koski 10/91
219 New Dewpoint/Ambient Temperature System R. Weimer 11/91
220 Cathodic Protection of the VLA 60mm Waveguide: Natural Potentials vs. Applied Potentials R. Latasa 09/92
221 An Inexpensive Alternative To Independent Fringe Rotation for Phasing All Four IFs D. S. Bagri 03/93
222 Spurious Signals and How To Minimize Them D. S. Bagri 04/93
223 Spurious signals at L-band To image problems D. S. Bagri 04/94
224 An Alternative To F15 Module - Phase switching 3200 MHZ LO (using Walsh Function) To eliminate Spurious signals at L-band D. S. Bagri 06/95
225 A Proposal To Monitor Tsys in New K-Band Frontends For Estimating Atmospheric Phase Variations D. S. Bagri 10/95
226 Cathodic Protection of the VLA 60mm Waveguide D. S. Bagri 10/95
227 A Proposal To (Almost) Double VLA Continuum Bandwidth D. S. Bagri 01/96
228 T4C Baseband Filter Report R. Gallagher 03/96
229 Wideband (About 80 MHz/IF) Analog Sum for the VLA D. S. Bagri 04/97
230 One GHz Bandwidth for VLA using the existing waveguide-modem system D. S. Bagri 07/98 original
231 Problems with Waveguide Corrosion at CN7 C. Janes 08/98
232 Lightning Protection for Waveguide C. Janes 08/98 original
233 VLA Installation of Former MMA Site Testing G. Watts 03/99
234 Characterization of the VLA Servo System C. Janes 05/99
235 Antenna Control Unit Upgrade C. Janes 05/99
236 A Removable 74 MHz Dipole C. Janes 08/99 original
237 Maintainability of VLA Expansion Correlator M. Revnell 11/99 original
238 Vertex Room A/C Receiver Temperature Controller Modification S. Troy, D. Polyard 05/00 original
239 Bracket for Waveguide Extension in B Rack S. Grayson 06/00 original
240 An Audit of the Wye Monitor System W. Koski 06/00 original
241 An Audit of the VLA Checker Messages G. Peck 09/08/00 original
242 Thesis Report G. Bivens, S. Field, B. Rajala 05/02 original
243 Lightning Protection, VLA Control Building B. Broilo, C. Janes 07/18/02 original
244 Fiber Optic Transmitter/Receiver Duplication for the Pie Town Link K. Caviggia 08/15/02 original
245 Antenna 16 Failure and Repair D. Whiton 04/05/07 original
246 Comparison of Maser Performance R. D. Scott 07/11/13 original
247 Importance of LO/IF Remote Level Setting E. Chavez, K. Morris 06/02/14 original
248 Total Power Detector Calibrations of the LOIF Converter Modules E. Chavez, K. Morris, H. B. Frej 07/01/15







Modified on Wednesday, 14-Aug-2024 13:02:26 EDT by Library Staff