At this time about 13 months ago, I had never been able to receive/decode/listen to transmissions (for more than 5 seconds duration) on the RWC Phoenix Police frequencies. Now I am able to line up a 500, a 600, an 800, and the HP-1(E) in front of me, and watch as ALL 4 lock on for the duration of the transmission. This would not have been possible without the features of the Extreme Upgrade to the HP-1. These are analytic features that show actual facts by meter device. As an aside, I can say without a doubt, that statements on forums such as:
"I put each radio up side by side and Brand*** whooped Brand*** hands down"
are completely bogus and without merit. With the HP-1(E) as arbitrator (lol), and all radios fed by a single antenna, if one radio is not performing equal to the other three, the user (that's me) has not satisfactorily tweaked the possible settings. When you get the settings correct, it is unbelievable to watch, all four radios lock on, and off, at (almost, less than 1/4 second difference) the same time.
This has resulted in each (any?) radio being able to decode 95%-98% of available transmissions on any desired TG in the RWC Phx PD. 13 months ago this percentage (for me) was no more than 20%. The extra cost of the "E" has paid for it's self (for me) many times over, as an analytic device!!!