Originally posted by Mongoose
Quantum pulses? From what I remember from the Tech Room, Shivans communicate through the electromagnetic spectrum. In fact, your ship picks up communications between the Iceni and the Shivans during the one nebula mission. That kind of shoots the "massive new device" theory out of the water. I always thought that the Shivans communicated in the normal spectrum, but that their communications were completely incomprehensible; that Bosch managed to get data from an Ancient archaeological site that enabled him to decrypt Shivan transmissions. Regardless, I don't think adding a big honkin' radar dish to the Iceni would do much for its looks. 
Um, Bosch's investigations into the Ancients was in order to locate and learn how to activate the Knossos device. It was stated in certain command briefings (audio files for SM303 command briefings in the stu VP file), that Bosch resurrected a defunct GTI project involving captured Shivan specimins. From this, we can deduce that data recovered by Bosch concerning this project, was the key to deciphering Shivan language, and likely also contained information on how Shivans communicate between ships, using the quantum pulses. So, we would have a translation matrix aboard the ship, which likely would have been part of a separate computer system, so that no one aboard unauthorized could access it. It would also allow it to be removed from the ship, as stated by the Iceni crew in that mission. I'm also guessing that if the GTI project gave Bosch the data to create the quantum pulse controler, then quantum pulses is likely something that the rest of the GTVA doesn't have the technology to control, and thus wouldn't be a standard component an any ship. This doesn't necessarily indicate one way or another that the device which controls the Quantum Pulses requires an external antenae of some sort, but it doesn't negate it either. I just think it would be a cool addition to the model, as long as its not too large or distracting.
As for the communications in "Speaking In Tounges" on an allied channel, lets just say that this is one instance among many, where FS contradicts itself.