JAMES TILESTON STENBERG
Pilots at Stroudwater Rd, Portland, ME
License number
Maine A1823764
Issued Date
Jul 2016
Expiration Date
Jul 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
25 Stroudwater Rd, Portland, ME 04102
Professional information
Broadcast & Wireless Rf Consultant And Contractor
Location:
Portland, Maine Area
Industry:
Wireless
Signal Separator And Bandpass Filter
US Patent:
6538529, Mar 25, 2003
Filed:
Aug 16, 2000
Appl. No.:
09/639322
Inventors:
James T. Stenberg - Portland ME
Sasha Long - Oxford ME
Sasha Long - Oxford ME
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H01P 1213
US Classification:
333134, 333206
Abstract:
A signal separator and bandpass filter that use plates with posts. The signal separator uses two bandpass filters to separate two signals of different carrier frequencies from one another. The bandpass filters each have a transmission line with the metallic plates disposed along its length. The number of plates and the distances between adjacent plates determine the bandwidth and the rejection capability of the filter.
System And Method For Feeding Multiple Broadcast Antennas Utilizing A Single Feed Line
US Patent:
6617940, Sep 9, 2003
Filed:
Apr 9, 2001
Appl. No.:
09/828479
Inventors:
James T. Stenberg - Portland ME
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H01P 1213
US Classification:
333134, 348723, 348 21
Abstract:
A system and method for utilizing a single feed line for feeding multiple UHF, VHF, and FM broadcast antennas. The system and method employ notch, lowpass, and bandpass filters in conjunction with a splitter to separate two channels transmitted over the same antenna feed line.
Intermittent Driving Mechanism
US Patent:
6791289, Sep 14, 2004
Filed:
Apr 9, 2003
Appl. No.:
10/409129
Inventors:
Sasha Long - Oxford ME
James T. Stenberg - Portland ME
James T. Stenberg - Portland ME
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H02D 104
US Classification:
318444, 318445, 318443
Abstract:
An intermittent driving mechanism is disclosed that includes a driving member having a slot formed in a channel. A driven member of the intermittent driving mechanism is rotatably coupled to the driving member and includes a pin that engages the slot after the driving member, when rotated, causes the pin of the driven member to enter the channel of the driving member.
Patch Panel Latching And Holding Mechanism Apparatus And Method
US Patent:
6887093, May 3, 2005
Filed:
Nov 20, 2003
Appl. No.:
10/716628
Inventors:
James T. Stenberg - Portland ME, US
Michael C. Davison - Raymond ME, US
Michael C. Davison - Raymond ME, US
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H04R013/62
US Classification:
439372, 439512, 439953
Abstract:
High-power coaxial signal lines, as used for example in television transmitters, employ patch panels with coaxial connections typically 7 cm to 30 cm in diameter to permit rerouting of signals. Like smaller patch panels, these use U-shaped coaxial links; rigid U-links for this application may be a meter between centers and weigh many kilograms. A patch panel handle and latch mechanism includes a gripping handle element integral with a latching element, the combination of which permits the user to grasp a pair of handles, release the latches retaining a U-link, remove the U-link from its position on the patch panel, and reposition the U-link without altering grip. Unlike previous designs, the novel handle/latch mechanism avoids hammers and clamps, as well as avoiding grasping large, fragile, possibly hot or dirty equipment, allowing the task to be performed with integral handles.
Switching System For Broadcast Transmission
US Patent:
6882244, Apr 19, 2005
Filed:
Jun 18, 2003
Appl. No.:
10/463514
Inventors:
James Stenberg - Portland ME, US
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H01P005/12, H01P005/22
US Classification:
333117, 333109, 333111
Abstract:
An apparatus directs two high-power UHF transmitter signals to one or the other or a combination of output destinations as determined by the setting of control components. Redirection between outputs can be performed continuously under full power. Using the apparatus, synchronous amplifiers directed to the same output produce a signal with all of the power of both amplifiers. The signals can be shifted to the station load without shutting down the amplifiers. After a failure, the remaining amplifier can be redirected to provide a clean signal.
Signal Separator And Bandpass Filter
US Patent:
6870443, Mar 22, 2005
Filed:
Nov 26, 2002
Appl. No.:
10/305774
Inventors:
James T. Stenberg - Portland ME, US
Sasha Long - Oxford ME, US
Sasha Long - Oxford ME, US
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H01P001/213, H01P001/202
US Classification:
333134, 333206
Abstract:
A signal separator and bandpass filter that use plates with posts. The signal separator uses two bandpass filters to separate two signals of different carrier frequencies from one another. The bandpass filters each have a transmission line with the metallic plates disposed along its length. The number of plates and the distances between adjacent plates determine the bandwidth and the rejection capability of the filter.
Switchless Combining System And Method
US Patent:
2005004, Mar 3, 2005
Filed:
Aug 29, 2003
Appl. No.:
10/651053
Inventors:
James Stenberg - Portland ME, US
International Classification:
H01P001/161
US Classification:
333125000, 33302100A
Abstract:
A switchless combiner for high-power broadcast signals incorporates a circular waveguide configured as an orthogonal mode transducer to provide a coherent signal and a phase rotator to steer the combined signal to an output coupler. Out-of-phase RF is absorbed by a station load. The phase rotator is capable of redirecting the output from either of the sources or all of the combined output to the station load. Switching between destinations for the RF components may be made with power applied. The input and output characteristics and mechanical configuration permit the switchless combiner to be integrated with other high-power RF broadcast signal manipulation devices.
Coaxial Line Phase Stabilization Apparatus And Method
US Patent:
2004024, Dec 9, 2004
Filed:
Jun 3, 2003
Appl. No.:
10/452129
Inventors:
James Stenberg - Portland ME, US
Assignee:
SPX CORPORATION
International Classification:
H04N005/38
US Classification:
333/117000
Abstract:
A phase control mechanism for broadcast RF transmission using pairs of transmission lines feeding a dual port antenna continuously monitors phase error between either the signals carried by the two lines or the physical heights of the bottom elbows where the two lines turn upward to ascend a tower. The mechanism minimizes phase error by altering the propagation time in one or both lines. Causes for such phase errors include climatic conditions such as unmatched heating by sunlight and cooling by wind. Effects of such phase errors include beam tilt and reduction in effective broadcasting range. Systems for which such phase control is applicable include broadband transmission systems carrying one or more channels of television and radiating them using a single antenna on a tower.
System For Transmitting Digital Signals With Fm Signals
US Patent:
6934514, Aug 23, 2005
Filed:
Jun 12, 2001
Appl. No.:
09/878167
Inventors:
James T. Stenberg - Portland ME, US
Assignee:
SPX Corporation - Charlotte NC
International Classification:
H04B001/00
US Classification:
455 45, 455103, 455104, 455105
Abstract:
A system for transmitting digital signals in the same band and on the same channel with FM signals is disclosed. The design of the system according to the present invention includes a coupler, which may be a +3 dB hybrid quadrature coupler, and circularly polarized antenna. The +3 dB hybrid quadrature coupler maintains isolation between the FM signals and the digital signals. The circularly polarized antenna receives the FM signals and the digital signals, and transmits the signals after they have each been separately received at the circularly polarized antenna.