I also have the TS832, may I suggest you watch the first 6-7 minutes of
this video, it'll really help you get an idea about antennas and how they work. Also why the "stock" little stick antennas that come with transmitters and receivers are crap and have no range.
once you watch that you should understand why you need a decent quality omnidirectional antenna on the transmitter, a pinwheel or cloverleaf.
on the receiver you have several options, which is nice since you have 2 plugs. You can put a omnidirectional antenna on the receiver, or even go with a helix which is much longer range but you have to keep it pointed at the transmitter (phantom). having 2 antenna plugs means you can do both.
you don't necessarily need 2 antennas on the receiver. If you're on a budget just get a decent set of cloverleafs.
If you have the money for premium antennas, there's a 3 antenna bundle from FPVLR that's pretty much the ultimate for $110. it has 2 pinwheels (1 Tx, 1 Rx) and a helix (Rx).
Here is the part number for Boscam transmitters. Pay close attention to his ***ATTENTION notes in the item, and if you want to order just get in touch via the sales@ email address and confirm which receiver you have and which plugs you need. He's very easy to work with.