Thanks much for your help here, Steve.
I am 2.31 miles NW of the location indicated on the RR map for the PAWM site.
I've tried listening using both the telescoping indoor antenna, as well as an outdoor discone antenna mounted about 18ft high.
If the site you are referring to is the one that you see when you first click on the site, then that is misleading.
Here's that first map:
PAWMCo P25 Site: PAWM Simulcast Details
www.radioreference.com
The one you really need to look at has the individual tower locations:
The most complete database of radio communications data
www.radioreference.com
Each of those markers is the approximate location of transmitters used.
If you are
very close to one of those (a quarter mile or less), then possibly the extremely strong signal can override the out of synch signals from the other towers. The problem is that the signals from the various sites arrive at your scanner at varying intervals. Yes, it's an extremely small out of synch time lag, but enough to confuse most scanners & affect their ability to monitor the system successfully. So, if you are sandwiched between several of the actual sites, it's going to affect your reception.
The Uniden SDS series scanners, the Unication pagers, and the
BlueTail receiver are all engineered to deal with that synch problem. (See this long
thread.) While the 536HP is a good scanner (I have one as well), and it is better on simulcast than some other scanners, it can still be overwhelmed with simulcast distortion. If you are using your scanner at home, in a fixed location, you might be helped by aiming a directional antenna at a specific tower, as far enough away (in dorection) as possible from other sites. Sometimes, "less" antenna helps (one not as sensitive, including only using a paperclip), Attenuation works for some people. But the problem with a directional antenna, or "less" of antenna, will negatively affect your reception of other systems. I can hear PAWM on my 536HP, but I'm so far away (southwest of downtown Dallas) that simulcast does not hinder me.