I'm looking into getting a outside antenna for my SDR, but I'm having a hard time finding any. I'm looking for a VHF, UHF antenna. What you guys recommend?
This would more than likely be better in the Scanner / Receiver Antennas subforum, you might consider asking an Admin or Moderator to move the thread there for more exposure.
I use a Diamond discone, it's wideband and good for general purpose VHF/UHF listening/scanning. Got mine from Universal Radio. There are a few different models out there. Also get yourself good quality coax, RG/6 is what I use.