All P25 reception

[KD7JVRinAZ]

I live in Scottsdale at Drinkwater/Osborn, right across the street from Honor Osborn Hospital. This area is already pretty much a 10-1 area. All I can get reliably is Simulcast H: Scottsdale site & 90% of the time Thompson PK site on RWC. Once in a while TOPAZ Mesa simulcast and many other RWC sites come to life but then fade out again. My discone antenna sits on a 20' roof on a 4' mast on a 3' tripod. The antenna is probably obscured by a decorative concrete wall on the roof. We are going to re-mount the antenna to the wall itself on a 17 or 18' mast, this should raise it about 20' on top of the 20' roof. This should improve reception considerably. I will also be installing a 700-900 MHz yagi on the mast in-line with the discone. I had originally planned to aim the Yagi at the White Tanks site until Monday when the White Tanks site was coming in on and off. Now my plan is to aim it at the new county system Southeast Mesa Simulcast site which I assume is in Maricopa County Southeast complex at Mesa Drive/US60 on Coury St at the pumps. My question is, should I am it at MCSO Southeast or TOPAZ Mesa Simulcast. I don't know to much about this P25 stuff. Would the cooler improve reception? Because I seem to be getting all P25 systems better since the weather started cooling down.

 

[AzTac]

Just an educated guess (which is often a key strategy in improving simulcast reception...) but if you are across the street from HonorHealth Osborn you're getting literally bombarded continuously with 700/800MHz radio and cellular signals. Your location simply may not be able to overcome such strong interference (especially with the BCD996) regardless of what you do with your antenna.

You may be able to overcome the interference by upgrading to the Uniden SDS100/200 or a Unication receiver, but I doubt you'll ever achieve success with anything else. My advice - try to get your hands on one of these receivers and test them before you waste any more time tinkering with your antenna.

 

[Ravenfalls]

Simulcast H if you hear it well it have more traffic than Thompson Pk does.

MCSO best choices
Site 31 Shaw Butte
Site 38 South Mtn
S/E site is fillin site & would carry as much as Thompson Pk High site does.

RWC Phoenix
System A & B Shaw Butte
South Mtn

Phx RWC - South Mtn carry some fire K Deck & some Phx Police.

If all you want is Phoenix RWC & MCSO aim Shaw Butte.

Mesa TOPAZ aim south / south east. Same for Chandler / Tempe.
Using a beam you can get bounce, do 360 & you might hear TOPAZ?