Antenna
I understand your point of view on "Don't want to spend too much on antenna" but consider this... The whole system scanner/coax/antenna is only as good as the weakest point. A lot of people here have tried to improve this and that, build an antenna, add amplifiers etc'. When starting the scanner hobby one usually expects the world and then learns to understand the limits of antennas and coax loss and the limits of the scanner itself. Many times over people discover the area they are in is digital or something else. My best advise is to read these forums in the antenna section, maybe understand many have tried this or that and some have actually found the answers. Things to consider 1. What are the systems in your area digital or analog? 2. What antenna are you using? 3. Coax length - longer equals loss. 4. Filters? maybe try an FM trap? Finally the antenna, seriously my best advise forget the cheap $40 dollar (breaks in a strong wind without modification ST-2) and look for a real antenna for example the dpdproductions omni-x. Yep it cost more but you won't have to replace every year. This hobby is like any other, go expensive get results go cheap get cheap. Try to muster through the development stages and find out you could have had it all for less in the end. So speaking from just that experience go get omni x and find a coax like lmr-400 to feed your scanner. It will provide many years of scanning pleasure.