Trailing static with Unitrunker

[bigRoN18]

I can't seem to find a specific forum for Unitrunker, please redirect me if you know of one, but I have several questions about how to accomplish what I'm attempting to do. I will start by mentioning my setup. I have an older scanner that WAS a trunking scanner (Radio Shack Pro-2067) but I can no longer follow my city's radio system since rebanding a few years ago. I modified the scanner with a discriminator tap which connects as the source receiver for Unitrunker. I have had poor luck with RTL-SDR receivers in the past but just purchased a couple from RTL-SDR.COM with TCXO and my earlier problems have been solved (unreliable frequency responses). I currently have one of my two RTL-SDR's plugged in and got it working. I have one annoying problem though and hoping it is a simple fix, I just can't figure it out. When the last person finishes communication on a particular talkgroup, I get about 3 seconds of static. There is no static in between quick replies, even if they change frequencies but after someone unkeys and no quick response, there is static.

 

[bigRoN18]

I couldn't find any documentation to let me know what I was doing, but I figured I needed to set the squelch. I have no idea what type of number it wanted... no idea what type of units it was looking for. I finally got the trailing squelch to go away when I entered "60". I tried raising and lowering the number and found 60 to be the spot where all voice communications would come across but static and other errant noises didn't.