Portable skid assemblies are shown and disclosed. In some embodiments, the portable skid assemblies include a frame having two or more pockets sized to receive the fork of a forklift, telehandler, or pallet jack. The portable skid assemblies additionally include a support assembly having a base attached to the frame and at least one support member that moves vertically relative to the base between a retracted position suitable for at least one of storage or transport, and an extended position where the skid assembly is configured to communicate wireless signals.

An antenna-equipped connector comprising a plug having separate conductive portions and configured to be received by an audio output jack of an electronic device, a jack configured to connect to the conductive portions of the plug via respective of at least two conductive lines, an antenna connection node that branches from a branching point on one of the at least two conductive lines, and an antenna connected to the antenna connection node.

An antenna-equipped connector comprising a plug having separate conductive portions and configured to be received by an audio output jack of an electronic device, a jack configured to connect to the conductive portions of the plug via respective of at least two conductive lines, an antenna connection node that branches from a branching point on one of the at least two conductive lines, and an antenna connected to the antenna connection node.

A telescopic mast includes: a tubular main body in which a power supply signal wire is embedded; one or more tubular sections coupled to be withdrawn from or insertable into the tubular main body; one or more coupling members which are provided at the top ends of the tubular main body and the tubular sections to fix or release the coupling between the tubular main body and the tubular sections during a withdrawn or insertion operation of the tubular sections; and a power supply coupling member which is connected to the power supply signal wire embedded in the tubular main body to supply power thereto.

An antenna assembly according to the invention includes a universal whip mount for mounting one of a variety of antenna whips to the antenna assembly, a loading coil inductor and a circuit board having a combination of both fixed and variable capacitors. The antenna assembly of the invention can be tuned to a wide range of frequencies with minimal disassembly and without soldering.

An antenna assembly according to the invention includes a universal whip mount for mounting one of a variety of antenna whips to the antenna assembly, a loading coil inductor and a circuit board having a combination of both fixed and variable capacitors. The antenna assembly of the invention can be tuned to a wide range of frequencies with minimal disassembly and without soldering.

A device such as an autonomous mobile device may include an extensible mast or other structure that changes length during operation. A cable between electronics at the ends of the structure includes a data line for signals and a power line for electrical power. A deployed length of the cable is determined and used to determine the phase of an antinoise signal that is radiated using the power line. The antinoise signal destructively interferes with at least a portion of the radiated noise from the data line, reducing the overall amplitude of the radiated noise. The deployed length may also be used to adjust other parameters, such as equalizer settings for one or more of a transmitter or receiver that is connected to the data line.

A device such as an autonomous mobile device may include an extensible mast or other structure that changes length during operation. A cable between electronics at the ends of the structure includes a data line for signals and a power line for electrical power. A deployed length of the cable is determined and used to determine the phase of an antinoise signal that is radiated using the power line. The antinoise signal destructively interferes with at least a portion of the radiated noise from the data line, reducing the overall amplitude of the radiated noise. The deployed length may also be used to adjust other parameters, such as equalizer settings for one or more of a transmitter or receiver that is connected to the data line.

Systems and methods for extending a boom. The methods comprise: placing a drive train assembly in a start configuration in which an engagement member of the drive train assembly is coupled to an inner telescoping segment of the boom; rotating a spool in a first direction so as to unwind a slit-tube that is coupled to the engagement member; causing the inner telescoping segment to move in a direction away from a proximal end of the boom as the slit-tube is being unwound from the spool; and coupling the inner telescoping segment to an adjacent telescoping segment when the inner telescoping segment reaches an extended position. The slit-tube extends a distance inside the boom that is equal to or less than a length of the adjacent telescoping segment when the inner telescoping segment is in the extended position.

Systems and methods for extending a boom. The methods comprise: placing a drive train assembly in a start configuration in which an engagement member of the drive train assembly is coupled to an inner telescoping segment of the boom; rotating a spool in a first direction so as to unwind a slit-tube that is coupled to the engagement member; causing the inner telescoping segment to move in a direction away from a proximal end of the boom as the slit-tube is being unwound from the spool; and coupling the inner telescoping segment to an adjacent telescoping segment when the inner telescoping segment reaches an extended position. The slit-tube extends a distance inside the boom that is equal to or less than a length of the adjacent telescoping segment when the inner telescoping segment is in the extended position.