An apparatus for adding weight to an arrow and a system and method of correcting the trajectory of the arrow with the added weight is disclosed and described. The arrow can include a compensator designed to fit as a sleeve on a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

A stop device for a projectile is disclosed. An example stop device includes an inner shaft and an outer sleeve. The inner shaft is slidable into the outer sleeve in a closed position, and the inner shaft slidable out of the outer sleeve in an open position. The inner shaft remains connected to the outer sleeve in both the open position and the closed position. At least one spring-biased stop-blade is attached to the inner shaft. The at least one stop-blade manually folds into the inner shaft as the outer sleeve slides to the closed position over the inner shaft. The at least one stop-blade automatically expands out beyond an outer circumference of the outer sleeve under spring-bias as the outer sleeve slides to the open position when the projectile impacts a target. In an example, the stop device also includes a microchip for locating the projectile.

A GPS arrow system to track a moving object. The GPS arrow system to track a moving object generally includes an arrowhead comprising a blade and an opening in the blade, a GPS tracking unit comprising a GPS attachment opening, and an attaching ring for attaching the GPS tracking unit to the arrowhead. The attaching ring comprises a gap that is expandable so that an end of the attaching ring can be passed through the opening in the arrowhead and the GPS attachment opening, for connecting the GPS tracking unit to the arrowhead. The arrowhead may be attached to the shaft of an arrow. The GPS tracking unit can transmit position signals that can be received by a handheld unit being carried by a user, such as a hunter, and used to track a moving object.

A system and method of correcting the trajectory of a hunting arrow is disclosed and described. The arrow can include a compensator coupled to a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

In one aspect, an example system includes an arrow nock configured to couple to an arrow, a transmitter coupled to the arrow nock, and a controller. The controller is configured to (i) determine that the arrow has been shot from a bow and (ii) responsive to determining that the arrow has been shot from the bow, cause the transmitter to transmit a beacon signal at a variable rate that varies based on an amount of time elapsed since determining that the arrow has been shot from the bow.

An improved electronic game tracking system is disclosed. The game tracking system uses electronic radio ranging to determine the distance and direction to a game animal to which the game tracking system is attached. Improvements to the game tracking system address disclosed sources of range determination error and remove or reduce their effects on the determination of the range between an electronic receiver which can detect the transmitter or tag and the transmitter or tag.

A system and method of correcting the trajectory of a hunting arrow is disclosed and described. The arrow can include a compensator coupled to a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

In one aspect, an example system includes an arrow nock configured to couple to an arrow, a transmitter coupled to the arrow nock, and a controller. The controller is configured to (i) determine that the arrow has been shot from a bow and (ii) responsive to determining that the arrow has been shot from the bow, cause the transmitter to transmit a beacon signal at a variable rate that varies based on an amount of time elapsed since determining that the arrow has been shot from the bow.

A method provides a visual reference for establishing an archery sight setting for an archery sight employed when aiming a bow. The method includes receiving, with the touch screen display, a user-input identifying at least one feature of selected archery equipment, the selected archery equipment including the archery sight and the bow and establishing, by the processing device, the archery sight setting based at least in part on at least one feature identified by the user-input, the archery sight setting established to provide a desired level of accuracy for the selected archery equipment. The method also includes outputting, by the processing device, the archery sight setting for display in the touch screen display and employing the archery sight setting as a visual reference for adjusting the archery sight to locate at least one sight pin at a height to provide the desired level of accuracy for the selected archery equipment.

A tracking apparatus for use in tracking an arrow, crossbow bolt, or other suitable projectile, includes an electronics unit configured to be connected to a shaft of the projectile. The electronics unit includes a radio frequency (RF) module. The RF module is electrically associated with a head of the projectile to cause the head to function as a first RF radiating element. The RF module is electrically associated with the shaft to cause the shaft to function as a second RF radiating element. One of the first RF radiating element and the second RF radiating element can be a poise, and the other of the first RF radiating element and the second RF radiating element can be a counterpoise.