Abstract: A kit and method of investigating the location of a portable telecommunications device used in making a call, includes obtaining information on the position of the receiver involved in the call. A location is surveyed by visiting the location and establishing the receiver a portable telecommunications device would use from that location. The method also compares the receiver involved in the call with the receiver that would be used from the surveyed location.

Abstract: A plurality of circumferentially spaced hooks (32, 36) extend upwardly from a ring (14) to which netting (18) is attached. A pair of retaining devices (40) are carried by the ring (14) and are circumferentially spaced from each other and from the hooks (32, 36). One of the hooks (32) may be pivotable to aid in installing and removing the attachment (12). The retaining devices (40) comprise a coil torsion spring (52) from which an integral latch member (54) extends. The member (54) terminates in a cradle (58) that is biased to pivot upwardly into engagement with the lower surface of the hoop (2). In an alternate embodiment, each retaining device (72) includes a flat spring (74) that bends radially inwardly and is biased radially outwardly to urge a hard rubber engagement portion (76) against the hoop (2). The attachment (12, 12') may be provided in combination with an installation pole (60, 82). The pole (60) engages the pivotal hook housing (28) to pivot the hook (32).