The Big Mountain Transportalponder! is a unique, prototype teleportation device created in the Big Mountain Research and Development Center. It allows the user to teleport between the Big MT satellite and The Sink balcony located in Big MT. This can only be done whilst alone 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 being similar to those of a weapon. In 2281, it was either given by the Think Tank to the Courier to thank them for their help or looted from the Think Tank after they were killed by the Courier.
When used in the Mojave Wasteland, it will teleport the Courier to The Think Tank, 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 while falling. The Courier must also not have any active companions in order to allow teleportation.
Transportation is possible from outside the playing area.
Since the Transportalponder isn't technically a weapon, it can't be used in V.A.T.S.
The Transportalponder is tagged as an essential quest item and therefore cannot normally be dropped or removed from your inventory. However, console commands allow PC users to circumvent this restriction. To set the Transportalponder to no longer register as a Quest Item (allowing you to drop and add it to your inventory as you would any other weapon), enter the console command "setquestobject xx00e1b0 0" (where xx is the ESM load order).
When using the Transportalponder to travel back to the Mojave drive in, three Jackal gang members may spawn nearby. They will not attack, and if killed, seem to be unlootable.
If a Stealth Boy is used, the energy within the transportalponder appears green.
Drawing the Transportalponder in casinos on the Strip nets the player infamy.
xbox360ps3 When you hotkey the weapon, the picture incorrectly shows the icon for Melee Weapons. [verified]
xbox360 The Big Mountain Transportalponder! may disappear upon leaving the Sierra Madre. [verified]
ps3 When using The Big Mountain Transportalponder!, the game might become slower than usual but will speed up after fast traveling or going through a door. [verified]
xbox360ps3 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. [verified]
ps3 Attempting to use the Big Mountain Transportalponder! while enemies are just outside your detection radius may change your detection status from 'HIDDEN' to 'CAUTION' as if you just discharged an actual weapon, drawing the enemies to you. [verified]
pc Upon being released from the Brotherhood of Steel in Hidden Valley, the Big Mountain Transportalponder! may not be returned. [verified]
xbox360 Sometimes after using the Big Mountain Transportalponder! to transport to the Mojave Wasteland, a lone fiend will appear. Although appearing as hostile, they will not notice you and will keep on running into the distance. [verified]