You can view some of our work by selecting one of the presentations listed below.
| John Hancock FM Combiner Projects |
| |
| » |
|
CRE Demonstrates Its Universal Transmitter Controller (Video) |
| » |
|
IBOC Power and Line Loss, April 2010 (.pdf) |
| » |
|
Dr. Jim White Performs Network Analysis on
ERI FM Combiner (Video) |
| » |
|
Dr. Jim White Performs Network Analysis on
ERI FM Combiner |
| » |
|
CRE Designs and Demonstrates K-Logic Tenant Station Interlock Safety Controller (Video) |
| » |
|
CRE Shows Video Demonstration: The 100% Compatibility of the Apple iPhone PDA with Broadcast Devices John Hancock Center Chicago R.F. Monitor / Protection System, May 2009 (Video) |
| » |
|
Chicago Radio Engineers aids with John Hancock Center Broadcast Station Emergency Generator Testing and AC Mains switch-over from Edison to Generator Power. All tests went well with no issues, May 2009 (Video) |
| » |
|
Monica Betel, CRE Mechanical Layout and Design Engineer, researches process to produce 3D CAD drawings for the John Hancock FM Combiner System, April 2009 (Video) |
| » |
|
WKQX line matcher installation and RF Sweep Data Measurements — Matching the WKQX tube transmitter to achieve very low AM Noise, April 2009 (Video) |
| » |
|
WKQX line matcher installation and RF Sweep Data Measurements — Matching the WKQX tube transmitter to achieve very low AM Noise, April 2009 |
| » |
|
Dr. Jim White explains overview of WKQX tube type transmitter to ERI transmission line matcher project (Video) |
| » |
|
Dr. Jim White performs new pressure sensor installation diagnostics for BDI system remote Shively FM combiner telemetering (Video) |
| » |
|
ERI Coax Switch Installation, April 2009 (Video) |
| » |
|
ERI Coax switch installation at the John Hancock Center in Chicago, April 2009 |
| » |
|
Power AIM 120 RF Network Analyzer graphs and physical tuning preparation of the new ERI transmission line matcher at WKQX in Chicago, April 2009 |
| » |
|
Dr. White performs RF Network Analysis of (1) the ERI Tuning Slug Transmission line, (2) the ERI VHF Coaxial Switch, and (3) the ERI Main Antenna, and their 'system' final impedance load presented to the Shively Combiner Output, March 2009 |
| » |
|
Completion of connections of the new ERI 6 Inch coax switch to the output of the Shively Combiner and ERI Tuning Slug Transmission Line, March 2009 (Video) |
| » |
|
Completion of connections of the new ERI 6 Inch coax switch to the output of the Shively Combiner and ERI Tuning Slug Transmission Line, March 2009 |
| » |
|
Dr. White manages installation of high power ERI coax switch at John Hancock Center FM installation in March, 2009 |
| » |
|
Dr. White reviews planned installation of ERI Coaxial RF Line Matcher at John Hancock Center. He will use this RF impedance matcher to lower AM noise components from older tube PA FM transmitters - March, 2009 |
| » |
|
ERI 6-1/8 , 50 VHF Coaxial Switch RF Port-to-Port Sweeps |
| » |
|
ERI 6-1/8 , 50 VHF Coaxial Switch RF Videos |
| » |
|
Dr. White fully tests the John Hancock Center Combiner ERI 6 Inch Coax Switch for (1) RF bandwidth, (2) Return Loss, (3) Characteristic 50 ohm Impedance, (4) Consistent RF Impedance verses 25 position cycles, and (5) 12 volt external logic control. |
| » |
|
Dr. White uses HP 8901A Modulation Analyzer in AM
Detection Mode to Tune: (1) Input section of tube PA deck, (2) Tuning
of Final Tube PA deck, and (3) Loading of Final Tube PA deck, of an
FM Broadcast Transmitter to Achieve lowest AM Noise component |
| » |
|
Dr. Jim White uses PowerAIM 120 Network Analyzer to find the relationship between AM Noise and the Input Tuning Deck Design of PA Final tube-type FM Broadcast Transmitters |
| » |
|
Dr. White compares the physical relation of PA Input Tuning Control rotation to VSWR slope of a Tube-Type FM Transmitter PA final stage |
| » |
|
Dr. White shows how the "Degree of Freedom" is related to rotations in the Input Tuning Control on a Tube-Type PA Final Deck, and how small rotational movement creates "Large Scale Deviations" in the PA input impedance and VSWR Load Slope in tube type FM transmitters |
| » |
|
Dielectric Coax Switch Removal |
| » |
|
Dielectric Coax Switch Removal Video |
| » |
|
Dielectric Coax Switch Engineering Evaluation Photo Record |
| » |
|
ERI Tuning Slug Transmission Line Sweep Measurements |
| » |
|
CRE Consults on Shively Filter Tuning Control Physical Clearance Photos |
| » |
|
CRE Consults on Shively Power Hybrid Removal |
| » |
|
CRE Consults on John Hancock Backup "ALERI"
Antenna |
| » |
|
CRE Consults on new John Hancock
Combiner control system |
| » |
|
CRE Repairs Marti R-10 and Moseley PCL-606 STL Systems in 2008 |
| » |
|
CRE Takes Narrow Band Input Measurements |
| » |
|
Richland Individual FM Station Measurements |
| » |
|
Richland Combiner Measurements |
| » |
|
IBOC Coax Switch Installation |
| » |
|
IBOC Watt Meter Installation |
| » |
|
Generator Computer Interface |
| » |
|
Generator Floor Plans |
| » |
|
93 Floor Automatic Transfer Switch |
| » |
|
ERI Backup Antenna |
| » |
|
West Tower |
| » |
|
Alford Antenna Exterior |
| » |
|
Alford Antenna Tower Feed |
| » |
|
Alford Logic |
| » |
|
Alford Mead Instructions |
| » |
|
Antenna Switch |
| » |
|
Component Temp. Measurements |
| » |
|
Computer |
| » |
|
Half Power Controller |
| » |
|
Alford Dummy Load Repair |
| » |
|
Lock-Out: Tag-Out Switches |
| » |
|
Reflected Power Tests |
| » |
|
Safety Switch Covers |
| » |
|
Transmission Line Dehydrator |
| » |
|
WLP Prototype RF Sampling |
| |
| Transmitter and Antenna Projects |
| |
| » |
|
CRE at WJKL Oakbrook Tower Antenna Lift |
| » |
|
CRE Installs Monitoring Antenna System (Video) |
| » |
|
CRE Installs Monitoring Antenna System |
| » |
|
CRE Creates Oak Brook Terrace Antenna Photo Database |
| » |
|
CRE Completes Oak Brook Terrace Roof Structure and Antenna Systems Survey |
| » |
|
CRE Continues Oak Brook Terrace Roof Structure and Antenna Systems Survey |
| » |
|
CRE Surveys Oak Brook Terrace Roof Structure and Antenna Systems (Video) |
| » |
|
CRE Surveys Oak Brook Terrace Roof Structure and Antenna Systems |
| » |
|
CRE Upgrades WCGO Transmitter and Broadcast Facility |
| » |
|
Chicago Radio Engineers demonstrates how terrific and distant WZRD FM's 100 watt signal is heard in Evanston and other suburbs |
| » |
|
Dr. Jim White monitors new WCGO's (Formerly WONX) terrific power increase to 7000 watts - Spring/Summer, 2009 |
| » |
|
Dr. White shows direct linear increase in measured AM Radio received signal, using a Potomac Instruments FIM-41 Field Strength Meter, when CRE consults to aid WCGO (Formerly WONX) increase it's daytime licensed transmitted power from 3.5 KW to 7 KW |
| » |
|
Mike Dorris, RF engineer for CRE, explains on-going work for the WCGO (Formerly WONX) Antenna Tuning Unit, April 2009 |
| » |
|
CRE Plans WCGO (Formerly WONX) Transmitter Upgrade from 3.5 KW to 7 KW |
| » |
|
Dr. White Plans WCGO (Formerly WONX) Transmitter Upgrade to 7000 watts of transmitted power (Video) |
| » |
|
Dr. White Refurbishes and Recalibrates FM Modulation and Stereo Monitors, saving stations time and money, while assuring the FM stations reach 100% of their Audience, March, 2009. |
| » |
|
Dr. White and Chicago Radio Engineers
Can Repair and Align Optimod FM Processors |
| » |
|
CRE Offers AM and FM Transmitter Design,
Engineering, and Emergency Support in the Field, Any Time, Any Day! |
| » |
|
CRE Uses PowerAIM 120 RF Network Analyzer to Evaluate and Determine Source of Broadcast FM Transmitter AM Noise Components |
| » |
|
Chicago Radio Engineers Use PowerAIM
120 RF Network Analyzer for a 30 KW FM Broadcast Transmitter Upgrade |
| » |
|
Dr. White Encounters Mysterious RF Induced Audio Resonance |
| » |
|
CRE Installs New ATU Tower Control and RF Cables Video |
| » |
|
WCGO (Formerly WONX) Backup Transmitter ATU and Modulation Monitor Installation |
| » |
|
CRE Designs, Repairs, and Maintains FM Transmitters and FM HD Transmitters |
| » |
|
WLUP Controller Demonstration Video |
| » |
|
Calibration of HP 436A Power Meter and Bird Wattmeter, Plus Test Setup |
| » |
|
CRE Installs New ATU for WMCW |
| » |
|
CRE Uses TDR to Repair WBEZ-FM STL Link |
| » |
|
CRE Rebuilds Continental 377D-2 Controller |
| » |
|
CRE Repairs and Calibrates FM Exciters |
| » |
|
CRE Repairs 30 KW Continental FM Transmitter |
| » |
|
CRE Repairs 10 KW Harris FM Transmitter |
| » |
|
CRE Installs New PA Deck in WLUP 10 KW FM Transmitter |
| » |
|
CRE Repairs NPR Station's 5 GIG STL |
| » |
|
CRE Installs IBOC for WLUP & WKQX |
| » |
|
CRE Aids in the Installation of Harris 50 KW AM Transmitter |
| » |
|
CRE Installs WSCR 50 KW Transmitter |
| » |
|
CRE Consults on WTMX Sears STL |
| » |
|
CRE Installs Nautel 1 KW AM Transmitter |
| » |
|
Chicago Radio Engineers Has Classic Vacuum Tube Skills to Repair Any AM Transmitter or FM Transmitter |
| |
| WiMAX and Wireless Networks |
| |
| » |
|
CRE Demonstrates WiMAX Technology (Video) |
| » |
|
Evanston WiMAX Completes Installation of WiMAX Antennas, Weather Proof Electronic Enclosers and Cables (Videos) |
| » |
|
CRE, Krueger Tower, Kovas Communications, and Broadcasters General Store Team Up for Successful
Installation of WiMAX System at WCGO, May 2010 (Videos) |
| » |
|
CRE, Krueger Tower, Kovas Communications, and Broadcasters General Store Team Up for Successful
Installation of WiMAX System at WCGO, May 2010 |
| » |
|
CRE Performs WiMAX Site Survey (Video) |
| » |
|
CRE Upgrades Backup Generator System for WiMAX |
| » |
|
CRE Antenna Test Farm |
| » |
|
CRE Installs WiFi and WiMAX Antenna |
| » |
|
CRE Plots WiMAX Antenna Array |
| » |
|
CRE Preps Coax Cables for WiFi and WiMAX Antenna (Video) |
| » |
|
CRE Survey Photos Taken for WiMAX Antenna Installation at WCGO in Evanston, IL |
| » |
|
CRE Demonstrates How Part Time AM Radio Stations Can Become Full Time 24/7 Stations on the iPhone |
| |
| Studio Projects |
| |
| » |
|
CRE Diagnoses WCGO Power Supply |
| » |
|
CRE Diagnoses WCGO Power Supply (Video) |
| » |
|
CRE Upgrades WCGO Transmitter and Broadcast Facility |
| » |
|
CRE Rewires WZRD studios and repairs Burk Remote Control |
| » |
|
CRE Rebuilds WCGO (Formerly WONX) Studios |
| » |
|
CRE Supports WKQX & WLUP Morning Drive Studios |
| » |
|
CRE Builds WTMX Main Air Studio |
| |
| Support Projects |
| |
| » |
|
UPS Installation |
| » |
|
Best UPS Removal |
| |
| Tower Projects |
| |
| » |
|
CRE and Krueger Towers Installs New Isocoupler at WCGO (Formerly WONX) |
| » |
|
CRE and Krueger Tower Project |
| |
| Archive Projects |
| |
| » |
|
Kent Lewin Confronts the Ice Storm from the RF Troposphere, March 2009 |
| » |
|
WLUP 1980 Transmitter Coax Switch Logic Controller |
| » |
|
The Master Spy |
| » |
|
SBE Meeting at WLS -- Late 1980s |
| » |
|
WNUA 1980s Transmitter Installation |
| » |
|
1980 WTAO Carbondale Audio Proof of Performance |
