Abstract: A ribbon overbraid cable includes a core such as a coaxial cable; a ribbon overbraid including braided, reflective ribbon, the overbraid enmeshed about and surrounding the core; and an extruded layer of transparent or translucent polymer extruded over the overbraid, whereby the overbraid is highly reflective of light incident on the cable and whereby the cable is protected against fraying.

Abstract: An electromagnetic pickup for stringed musical instruments has a primary bobbin having an elongated body with holes for receiving at least one pole piece or magnet and a coil of wire wrapped around the elongated body. At least one magnet is positioned in close proximity to the primary bobbin to create a magnetic field around the primary bobbin. In addition, the pickup includes a secondary bobbin having a body significantly smaller than that of the primary bobbin; a coil of wire is wrapped around the smaller body. The secondary, or hum-cancelling, bobbin is positioned in close proximity to the primary bobbin solely to cancel an audible hum caused by a power supply used in the amplification equipment and/or other environmental sources.