Big Mountain Transportalponder!

The Big Mountain Transportalponder! is a "weapon" device in the Fallout: New Vegas add-on Old World Blues.

Background
The Big Mountain Transportalponder is a unique, prototype teleportation device that was created in the Big Mountain Research and Development Center. Once accquired, It allows the user to teleport between the Big MT satellite, located in the Mojave Drive-in (from 2281 onwards) and The Sink balcony, located in Big MT. This can only be done whilst travelling without any active companions and not while indoors, too far from the destination or in a place with a camouflaging system.

It has a similar design to a detonator, the back casing is orange with an aqua-colored clear plastic top containing an electronic chip to the end and a concentration of lightning in the rest, with a barrel sticking out from the front attached via black tubes running down the sides. The antenna is also thicker with a spherical point, with its handle and trigger are similar to a weapon. In 2281, it was either given by the Think Tank to the Courier to thank them for their help or stolen from the Think Tank after they were killed by him.

Characteristics
When used in the Mojave Wasteland, it will teleport the Courier to The Sink balcony, and when used in Big MT it will teleport the Courier to the Mojave Drive-in. It will not activate if the Courier is in combat, or is not in those two areas.

This is somewhat counter-intuitive, as some areas otherwise open to the sky - such as the Crimson Caravan Company, Freeside, The Fort and The Strip - are not in fact part of the Mojave Wasteland "area", despite being exposed to the sky; teleportation is only possible if the Courier is in the Mojave Wasteland proper. Hoover Dam is also a no-teleport zone, to prevent breaking the game's final objectives.

Other areas such as Nellis Air Force Base and Hidden Valley have similar restrictions for unknown reasons.

The Courier must also not have any active companions in order to allow teleportation.

Locations

 * Received upon completion of the Old World Blues quest.

Bugs

 * When you hotkey the weapon, the picture incorrectly shows the icon for Melee Weapons.
 * The Big Mountain Transportalponder! may disappear upon leaving the Sierra Madre.
 * When using The Big Mountain Transportalponder!, the game may crash during the loading screen.
 * When Transporting all rep with current factions is reset to neutral, however, by becoming disguised then removing the disguise, your reputation will return to normal.
 * If you use the Big Mountain Transportalponder! after using the NCR Emergency Radio, the NCR trooper you called in will help you fight enemies and will follow you, despite the fact that any companions you have are not allowed to follow you into Big MT.

Gallery
Big Mountain Transportalponder!