My Portfolio; Julias N. Wolfson
Julias Wolfson
Retired, disabled. System Analyst II at PROJECTXYZ, Inc. Loved the job, and company was good to me.
My career started with 8 years in the US Army with the HAWK Antiaircraft Missile system. Continued after I got out of the Army with Kentron International and the highlight of my career was drawing the attention of the base commander in a good way at the China Lake Naval Air Warfare Center.
Mr. Wolfson and his crew were recognized by Rear Admiral D.B. McKinney NAWCWPNS Commander when they were presented with a NAWCWPNS Team Award for their accomplishments with the HAWK.?
It read in part “You accept the massive challenge and worked within your own job description to learn the logistic field to acquire parts locate technical manuals and track all leads necessary to enable the system to work. You accomplished this under a very primitive and adverse working environment; outdoors in the wind and other severe desert conditions, adapting and creating tools and equipment as needed. The speed with which you restored the radar and your efforts to keep the cost low saved the government in excess of $1.2 million.”
Now for the boring stuff?
March 2020 to Present?
I now work for Project XYZ
(No Joke, it is a real company)?on a contract for foreign military sales at the HAWK Logistics Service Center in El Paso Tx. My title is Systems Analyst. The Service center recently received several HAWK Test Stations from the Army. I was tasked to get the systems online, to upgrade where possible, and to document said systems?
I currently use automated test systems, such as the A2000 microwave test station using an HP computer. The system consists of Digital to analog and switch converter, 20 GHZ spectrum analyzer, Wavetek sweeper, HP Impedance analyzer, HP 10 MHZ to 20 GHZ Sweeper, HP 438A RF power meter, HP Digital Multimeter, and 20 watt TWT.?
February 2014 to June 2016??????
Kratos Defense and Security Solutions?
?Engineering Technician?
I provided technical expertise in the areas of operations, maintenance?and quality control of HAWK weapon systems; provided technical guidance?to users and other project members; provided technical support to?external project offices on a contract basis. Produced user, operator,?and maintenance manuals in accordance with accepted documentation?standards.?
Repair and Calibration?
To maintain obsolete Foreign Military Systems, I was tasked to bring vintage test stations out of storage, repair and calibrate the test equipment.?
Repaired multimeter and checking calibration. The laptop uploaded data from the oscilloscope and I created files that were used to certify calibration of the multimeter.?
Yes I know, a handheld DMM is far from being a reference for calibration, but it was all I had.
Just finished repairing an HP Function Generator and checking calibration. The laptop got data from the oscilloscope and I was able to download the display in files which were used to certify the Function Generator as being fully functional and meeting calibration requirements.?
Laptop with?Oscope?display.?
Laptop display that will be saved with text as to all parameters of all three?Oscope?traces.?
Testing a high voltage transformer for a project I completed before I retired. Many people in the company called me their MAD SCIENTIST!
A friend at Raytheon told me about a position that was open at the HAWK depot in Cairo Egypt and said I might like the position. I applied and was accepted for the position.?
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·????????January 2010 to January 2012?
·????????Raytheon Southeast Asia Systems Company | Cairo, Egypt ??Senior Field Engineer I?
·????????Provided depot level guidance and training to Egyptian Air Defense forces and Raytheon team personnel, in the operation of the A22 Dimensional Test Equipment (DTE), A45 Circuit Card Tester, A1000 Microwave Test Station, A2000 Receiver Test station, and IHPI Test station. Also provided maintenance sustainment, inspection procedures, and techniques for Homing All the Way Killer (HAWK) surface-to-air missile weapon systems major end item and subassemblies.?
·????????September 2005 to December 2009?
·????????Kratos Defense Security Solutions (Formally WFI Government Services) | El Paso, Texas ??System Analyst I??
·????????Provided technical expertise in the areas of operations, maintenance and quality control of HAWK weapons systems and technical guidance to users, other project members, and external project offices on a contract basis. Produced user, operator, and maintenance manuals in accordance with accepted documentation standards.?
My shop at the Dona Ana Missile Range in New Mexico for Kratos Defense and Security. I had two HFC (High frequency Consoles)?
Repairing and testing a programmer for an A22?DTE (Dimensional Test Equipment)?HAWK test console.?
HAWK DTE (Dimensional Test Equipment) Used for a deeper level of troubleshooting of HAWK units.?
Memory Module Programmer, used to program the firmware of HAWK Memory Modules after repair. I also used it for troubleshooting Memory Modules.?
January 1993 I was summoned to the office of the Division Branch Head to talk about my previous experience with the HAWK missile system. He informed me that ECHO Range will be taking delivery of a PIP II Hawk System from Letterkenny Army Depot and asked me if I would take the Team Lead Position. While waiting for delivery of the HAWK system he asked me to look at some problems the Roland ADA System was having with their Target Tracking Transmitter. To make the Roland ADA system mobile and fast reacting the system was designed in a modular fashion like a fighter aircraft, to trouble shoot the radar and fire control systems while installed in the system was impossible.?While studying the system schematics I discovered that the system was designed to be serviced at a purpose built Test Station with the necessary power supplies, and inputs to operate the Transmitter.?The Transmitter was also designed with test points that were brought out to the interface connector that was monitored at the test station. As a result of my research into the Roland Transmitter I was able to design a Roland TTR Transmitter Test Station. I scrounged enough test equipment, power supplies, salvaged some op amps and modular reference power supplies to build an interface panel. The TTR Transmitter was completed, tested and put into operation May 1993?
Roland TTR Transmitter Test Station
My shop at ECHO Range. We had two HFC Consoles, plus three ESD Stations.?
Troubleshooting an AFC unit for one of our radars. Some of my antiques can be seen to the right.?
He was sleeping under the cable troughs.
LOL Really enjoyed this test, don’t know how much I can say about it, but I can say we didn’t make it easy for them.?
Worked with ARM Target Group on the North Ranges to help them get their HAWK System functional, and also helped them locate needed spares and Technical manuals.?
Performance?Narrative July?2001
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Performance?Assessment?1999?
Performance?Narrative August 1999
Performance?Assessment?1998?
Performance?Narrative?1998?
Performance Assessment?1997?
Performance?Narrative?1997?
Performance?Assessment?1996?
Performance?Narrative?1996?
HAWK PIP III Training
Alpha HAWK Training
Performance?Assessment?1995?
Performance?Narrative?1995?
Performance?Assessment?1994?
Performance?Narrative?1994?
??Jan 86 to Sept. 91 Environmental Test Section Code 62122: Responsibilities included testing and maintenance. I conducted environmental testing on all-up weapon system components. Testing included vibration, temperature and?humidy, rough handling, salt fog, and vibration shock testing. This series of tests were conducted on live and /or inert weapons. I was also responsible for the repair, maintenance, calibration, modification, updating, and installation of test instrumentation for the Environmental Engineering Test and Inspection Section. I was also responsible for the maintenance, repair, modification, updating and installation for the models Ling and?Unholtz?Dickey Shaker amplifiers. Instrumentation included experience with Endevco Charge and Shock Amplifiers, strain gauges, thermocouples, Microstar computer-embedded process controllers, J.C. controller, LFI controllers, and other non-computer-embedded controllers such as Ohmega, and Honeywell. I was also responsible for the Micro Host Computer that interfaced to the Microstar Process Controllers. I ran diagnostics and did limited repair on the Hewlett Packard Computer embedded vibration controllers. Other duties included being responsible for electrical synchronization circuits for high-speed cameras and communications of all test areas as assigned. I also designed and built the SSPA test set, this test set is used to test and repair the Ling Electronics Solid State Power Amplifier (SSPA) modules used in the Ling model SSPA 48 and SSPA 96 High Power Amplifiers used to drive the Ling Shakers that are used for Vibration testing.?
Ling Shaker driving shaker table
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??Jan 86 to Sept. 91 Environmental Test Section Code 62122: Responsibilities included testing and maintenance. I conducted environmental testing on all-up weapon system components. Testing included vibration, temperature and?humidy, rough handling, salt fog, and vibration shock testing. This series of tests were conducted on live and /or inert weapons. I was also responsible for the repair, maintenance, calibration, modification, updating, and installation of test instrumentation for the Environmental Engineering Test and Inspection Section. I was also responsible for the maintenance, repair, modification, updating and installation for the models Ling and?Unholtz?Dickey Shaker amplifiers. Instrumentation included experience with Endevco Charge and Shock Amplifiers, strain gauges, thermocouples, Microstar computer-embedded process controllers, J.C. controller, LFI controllers, and other non-computer-embedded controllers such as Ohmega, and Honeywell. I was also responsible for the Micro Host Computer that interfaced to the Microstar Process Controllers. I ran diagnostics and did limited repair on the Hewlett Packard Computer embedded vibration controllers. Other duties included being responsible for electrical synchronization circuits for high-speed cameras and communications of all test areas as assigned. I also designed and built the SSPA test set, this test set is used to test and repair the Ling Electronics Solid State Power Amplifier (SSPA) modules used in the Ling model SSPA 48 and SSPA 96 High Power Amplifiers used to drive the Ling Shakers that are used for Vibration testing.?
We were having a lot of problems with our shaker amplifiers that were used for vibration testing. the shakers are like large electrodynamic loudspeakers or linear motor driven by giant solid-state amplifiers, capable of developing up to 1200 amps of power. I developed this Test station for trouble shooting, and testing of the amplifier modules. A shaker amplifier module can be seen on the shelf of the cabinet on the left.?
The test set is used to test and repair the Ling Electronics Solid State Power Amplifier (SSPA) modules used in the Ling model SSPA 48 and SSPA 96 High Power Amplifiers used to drive the Ling Shakers that are used for Vibration testing.??
Because of the modular construction of both model Solid State Power Amplifiers troubleshooting the output modules was impossible. The modules were installed vertically in groups of 8 modules; there were only two inches between modules. The Emitter and Collector Bus leads were in a wiring harness and connected to the front of the modules, the module cooling hoses with the audio (3M) connector connected from the rear of the modules. The modules could not be extended from the bay for troubleshooting purposes because of the way it was installed into the bay.?
The Ling Model 8096 and 8048 Solid State Power Amplifier (SSPA) is a high?
(A)?????????power, water-cooled audio amplifier specifically designed to provide the necessary power output to drive an electrodynamic shaker for vibration testing applications.?
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1.2?????????The purpose of these amplifiers is to amplify sine, random or shock wave signals?
(A)?????????in a variable audio frequency and amplitude range.?
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1.3?????????The modular construction of the Ling Solid State Power Amplifier (SSPA)?
(B)?????????permits a wide selection in the number of output modules to be used in a particular amplifier, thus providing a wide variation in total output power.?
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1.4?????????Each output module consists of 60 each NPN transistors, type 2N5240 (Selected?
(B)?????????per Ling Specification PS11327), divided into six groups with ten transistors in each group. The ten transistors in each group are connected in parallel and fused with a 20-ampere fuse. The six groups are then connected in parallel resulting in the equivalent of one transistor with 60 times the current capability of one transistor. Each transistor maintains its own biasing and dual feedback circuitry. The paralleled transistors are connected base-to-base and collector-to-collector. The 60 collective emitters are connected through one-ohm, five watt resistors to a common bus identified as the EMITTER BUS OUTPUT. Use of the one-ohm resistors causes each power transistor to share the load equally. Each group of ten transistors is driven by its associated driver, emitter-follower which employs a 10-ohm, two-watt resistor from emitter to common. The six group drivers are driven by two paralleled drivers, Q34 and Q57.?
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1.5?????????Output Module Cards (Model 8048):?
(B)?????????From eight to 40 output modules may be used in the Model 8048-XX SSPA. These modules are divided into two different but equal groups. The modules in each group are connected in parallel. One group of paralleled modules forms the upper output modules, while the other group of paralleled modules forms the lower output modules. Both groups combine to provide push-pull operation across a common load which is the armature assembly in a high-force rating shaker.?
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1.6?????????Output Module Cards (Model 8096):?
(B)?????????There are 72 output module cards in a Ling Model 8096-72 SSPA. These modules are divided into four different groups with 18 modules in each group. The 18 modules in each group are connected in parallel. Two groups of paralleled modules, A and B, are then placed in series to form the upper output modules. The other two groups of paralleled modules, C and D, are placed in series to form the lower output modules. This technique of operating the two paralleled groups in series is known as stacking and permits impedance matching of the 8096-72 SSPA with high-force-rated shakers such as the model A340 shaker.?
Shaker Module that Test Station is designed to test.
1.7?????????Output-Continuous Duty:?
(B)?????????Ling SSPA's are rated in 4KVA rms increments. Total output depends upon the number of output modules in use and the load matching of the particular unit. All output ratings are for continuous duty in the sine mode of operation. The output may be grounded at the amplifier output or at the load. DC power is approximately 70% of the maximum rated AC output power.?
Ling Shaker attached to Shaker Table?
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Section II?
SSPA Output Module Test Set:?
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2.1?????????Because of the modular construction of both model Solid State Power Amplifiers troubleshooting the output modules was impossible. The modules were installed vertically in groups of 8 modules; there were only two inches between modules. The Emitter and Collector Bus leads were in a wiring harness and connected to the front of the modules, the module cooling hoses with the audio (3M) connector connected from the rear of the modules. The modules could not be extended from the bay for troubleshooting purposes because of the way it was installed into the bay.?
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2.2?????????Test Set Requirements:?
???????????????There are four requirements that must be met to operate the output module, these requirements are:?
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???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????2-1?
2.3?????????These four requirements were met with the following equipment.?
???a Little Giant submersible pump model number 3E-12N.?
Performance?Assessment?1990?
Performance?Narrative?1990?
Calibrating a?Thermocouple?at CT4 after instrumenting an artillery round for Fast Cookoff Test.
Skyline Control facility for vibration testing. The control center was a 1/4 mile from the weapon system.?
Preparing for a slow cook-off test, I'm on the right getting ready to install the instrumentation. The orange strip on the cylinder is heating blankets that heats the rocket motor that is inside the cylinder.?Some times?it will take about 2 to 3 days before a reaction to take place.?
Radar tower at Laurel Mountain (CA)?
I worked with everything on the mountain. The radar which was an AN/FPS-20 Heavy Ground Search Radar. The microwave communications, Air to ground radios, and even the chemical toilet which broke down often. I worked here from 1985 to 1986.
Radar data converter, takes analog radar data and converts it to digital data to be transmitted real time via the RML microwave radios.
Modulator and Transmitter cabinets?
MSS 690 Built by Space Data Corporation at?Tower 9 China Lake Naval Air Warfare Ca.?
Tower 9 at China Lake California?
Because of my reputation as a troubleshooter at Dugway Proving grounds with Kentron, I was offered a promotion and pay raise to help the company with their contract that Kentron had with China Lake in support of the meteorological department. They purchased a new piece of equipment made by Space Data Corporation, the MSS 690, and they were having problems with it. After some research I discovered that most of the problems was with the radiosondes carried aloft by meteorological Balloons. I developed a procedure for repair and calibration of the radiosondes, and built a simple test set for testing of the radiosondes.?
Balloon inflation station and dome with the MSS 690?antennae inside.
NIDIR (Nike Instrumentation Radar)?AN/TPQ-39 (V)?
10/1980 to 3/1982;??
I helped build and develop Remote On Axis camera mounts, C-Band Radar which was a modified Nike TTR, and modify update and refurbished the NIDIR (Nike Instrumentation Radar) AN/TPQ-39 (V): We completely dismantled a NIKE Target Tracking Radar, we removed the dish and "Hot Box" and pulled the yoke off the pedestal using an overhead crane. We removed all the steel Balls from the Azimuth drive ball bearing, we cleaned and inspected the bearing race, and steel balls. We reassembled and lubricated the bearing and set the yoke back onto the pedestal. We then placed a sensitive tilt meter in the inside center of the yoke and checked the azimuth drive for trueness of the bearing by rotating the yoke every 100 mils and taking a reading from the tilt meter. After each reading we would level the pedestal, rotate the yoke another 100 mils and repeat the process. After certifying the trueness of the bearing we modified the transmitter hot box to accept a new C-Band magnetron. We relocated the high voltage power supply and trigger pulse amplifier from below the slip ring package to above the slip ring package on opposite sides of the yoke. We replaced all four high power servo amplifiers, and the AC driver motors for both the Azimuth and Elevation axis with Inland DC drive motors and Inland DC servo Amplifiers. The NIDIR and all the camera mounts we built also had Inland DC drive systems.??
Granite Peak Dugway proving grounds Utah. I worked with the 469l Corts Telemetry station made by Scientific Atlanta, closed circuit television,?Terrycom?microwave, MUX, Multiplexers and Ampex tape recorder.?
Dugway Proving Grounds???1978 to 1982??????????????????????????????????????????????????
I was working for Kentron International at the time, The company had a contract with the US Air Force in support of Cruise Missile testing. I was like a trouble shooter going where a problem was with a piece of Equipment which meant sometimes I had to be flown out to remote mountain top sites.?
16 foot dish on 40 foot tower?
Scientific Atlanta Telemetry tracking council.?
Being flown to a mountain top to check out a Radar Boresight tower. Gets cold in the winter time.?
Radar Boresight tower, notice, three different dishes for three different radars. The radars would shine on the dish for morning system alignment. The Radar Boresight tower was surveyed for accurate geographical radar positional data. Known data point. The electronics is battery powered, and the batteries are charged during the day by?solor?panels, of which can be seen on the tower.?
I used a radio I carried with me to call Hill Air Force Base, to notify them that I'm done with my job. They then would send a helicopter to either take me to another site, or to return me to the base.
1979 to 1982?
At Hill Air Force Base.
I Repaired the DIR Radar?AN/TPQ-39,?with the?Data General Mini Computer Nova 800 and turned it over to the Air Force.
1977 to 1979?
Arkansas Tech University?
Studied Physics and Computer Science??
?I served in the US Army from June of 1969 to June of 1977
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I’ll be posting an article about my Army Time
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