dimanche 29 mars 2015

536HP vs 996P vs HP2 on trunking CCs

Again, I must preface this post by saying that the 536HP, 996P2, and HomePatrol 2 with Extreme are all very nice scanners, each with particular features that different folks will find particularly useful for their given situation.

This post/thread focuses on 800 MHz trunking control channel performance. Again, I live in the center of the LA Basin, on the Orange County line, and I can regular monitor conventional in LA, Orange, SBDO, Riverside, Ventura, and often San Diego County. Trunking is limited to the first four counties (that I can manage to decode).

San Bernardino County has several sites. Sites 06/07, 08 (Mountains), and 9 (Aerojet) (Motorola Type 2 Smartnet, Analog). can be monitored here. All are in 850-865 Mhz range, and the adjacent interference on almost all channels is horrific from all kinds of signals in every direction. Tonight, I ran my 536HP (A), 996P2 (B), and HomePatrol 2 Extreme (C) through MCA204M coupler to my 800 Mhz 15 el TerraWave Yagi at about 25 feet.

Site 8 (Mountains) is the strongest, including the CC, and A, B, and C receive this site well. Solid CC decode and great audio quality on all 3 scanners. This site is about 45-50 miles away, up in mountains, and I can easily monitor from some places in my house using an RS-800.

Site 06/07 and 9 are have weaker CCs here in Cerritos, and the adjacent QRM is incredible. The 536HP shows less signal strength on the CCs, but basically does the best job of decoding these sites.

The 996P2 picks up more crud, but reasonably will pick up the CC on 06/07 and shows the site ID on hold. However, the 536HP picks is consistently better on 06/07, and will also pick up some stuff on site 9 (Aerojet) that the 996P2 cannot lock onto.

The HP2 shows the strongest signals on the analyze feature for 06/07 and 9. However, the quality is zero. HP2 does great on site 8 (the strong site), but on 06/07 and 09, the quality (middle yellow on analyze screen) shows zero. The signals are reading 7 to 8 but the quality is zero. In other words, its just adjacent interference crud.

So on this "let's pick up the CC out of the crud test" here in So. Calif, the 536HP does best, the 996P2 does OK (probably about same as my 996XT has in the past), and the HomePatrol 2 needs a good strong CC for it to do its thing. Again, YMWV depending on your needs and locations.

This particular post does not address P25 quality, but for all but very weak (0-1 bar) P25 stations, all three of the above scanners are great.

Steve AA6IO





536HP vs 996P vs HP2 on trunking CCs

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