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Uniden Tech Support - For discussion of all technical aspects of current or future Uniden scanners.

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  #21 (permalink)  
Old 04-12-2016, 7:38 AM
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Quote:
Originally Posted by miked9372 View Post
so which one is actually better on p25? BCD536HP or BCD996P2
I have both on 24x7 and I can honestly say neither. Its a crap shoot. Some people swear by this scanner or that scanner. Its all about location, location, location. There is no consumer grade scanner out there that can "fix" simulcast problems. When you see people say that they've "solved" the problem. The answer is usually related to antenna type/placement and not the scanner itself. Thats my take on this anyways.. Once a vendor comes out with a scanner that fixes this issue, they're gonna sell a TON of them.
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Old 04-12-2016, 10:23 AM
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^^^^ totally agree 100% ^^^^^^^
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  #23 (permalink)  
Old 04-12-2016, 2:06 PM
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My Radioshack pro 106 picks up way better than my 996xt I'm wondering if the new Uniden scanners are worth it or if i should just switch brands.
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Old 04-12-2016, 2:58 PM
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My two 536s vastly outperform my x96 scanners on simulcast systems. They are not pristine, but acceptable.
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Old 04-21-2016, 1:37 PM
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My BCD996P2 is lousy on P2 simulcast. I hook it to the same antenna that I use for my 436 and the 436 beats it hands down. For some unknown reason, it takes a long time to start receiving transmissions,and when it does, I only get half of them.
The 436 shows DAT on the readout and works 100 percent of the time.The is no similar indication on the 996.
Since the 436 and 536 seemto be brothers and alike, I would go for the 536if I was going to do a lot of P2 monitoring.
Just my 2 cents...
Mike

Just a quick add, I live about 25 miles from my nearest P25 system and use a dedicated yagi with low loss hardline to the receiver. If I walk around my house, there are several "sweet" spots where the P25 comes in on the supplied antenna. I usually get about 3-4 bars on the yagi.
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Old 04-21-2016, 1:57 PM
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There will never be a scanner that performs well on P25 LSM Phase I or Phase II under all circumstances until the radio is re-designed with an IQ demodulator. The current FM demodulation method fails because it strips out the AM component of the signal required for proper LSM demodulation.

Do a search on the many threads by Max (KA1RBI) explaining this.

That said the closer you are to a site (nulling out any others) the better the reception will be. Get in between sites and that's where the problems start happening.

I would hope that Uniden or another manufacturer would be seriously re-designing the next generation of scanners since there are now at least
3 free software based platforms that is designed for LSM (OP25, SDRTrunk, and the latest versions of DSDPlus.)
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Old 04-21-2016, 1:59 PM
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Quote:
Originally Posted by kc2smb View Post
I have the same problem in Saratoga County NY. Have tried a couple different scanners and it is terrible. I then heard about the Unication G4. This thing is unreal. I dare say it receives as well as the Motorola XTS5000 I have. No problems with multi site. They have figured out the solution. I would highly recommend.
I've heard of such claims! But I've yet to see them demonstrated.
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Old 04-21-2016, 2:07 PM
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The new Whistler scanners, as well as the Radio Shack scanners made by Whistler do very well in Macomb County Michigan's simulcast environment, which has been a issue for any scanner for years!

Some have claimed (possibly myself sometime ago), that Whistler scanners are just rebadged GRE scanners. Not so!

I've owned the following, and have tested them personally:

Radio Shack PRO651, PRO-652, PRO-668
Whistler WS-1088, and WS1098

Audio is clear, not garbled, "Donald duck, or going digital, as some say.
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Old 04-21-2016, 2:45 PM
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Quote:
Originally Posted by iMONITOR View Post
Some have claimed (possibly myself sometime ago), that Whistler scanners are just rebadged GRE scanners. Not so!
I doubt we will get an answer, but since Whistler purchased GRE's IP, they are most likely clones which can be confirmed by the Whistler contractors on the site. Why would they purchase the IP just to come out with their own look-alike design?
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Old 04-21-2016, 3:30 PM
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Originally Posted by Voyager View Post
I doubt we will get an answer, but since Whistler purchased GRE's IP, they are most likely clones which can be confirmed by the Whistler contractors on the site. Why would they purchase the IP just to come out with their own look-alike design?
So you're saying Whistler can't improve on the original design?
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Old 04-22-2016, 1:14 AM
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I purchased a BCD436HP to use for monitoring Carroll County, MD fire. Despite the fact that I'm less than 4 miles from a tower site, the 436 goes silent at random times. I move the radio and antenna around and sometimes it starts to receive again, other times not. Reception is sporadic and quality varies from good to poor to nonexistent. I've tried adjusting the P25 threshold settings, but that seems to be a moving target as well.

In my experience the 436 is disappointing with P25 Phase II simulcast reception for Carroll County MD.
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  #32 (permalink)  
Old 04-22-2016, 1:23 AM
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I had the BCD436HP, and the BCD536HP, and the performance with Macomb County, Michigan's simulcast system was a little disappointing. All the Whistler scanners have performed much better for me, in my particular environment.
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Old 04-22-2016, 2:46 AM
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I know it depends on the system but my HomePatrol 2 does better on simulcast than the 436, 325 and XT models both at home and mobile.
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Old 04-22-2016, 6:09 AM
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Quote:
Originally Posted by iMONITOR View Post
Some have claimed (possibly myself sometime ago), that Whistler scanners are just rebadged GRE scanners. Not so!
This was confirmed long ago by DonS.
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Old 04-22-2016, 8:45 AM
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My experience, in a very difficult spot trying to monitor a busy P25 simulcast system, with multiple towers within range - using both a Home Patrol and a '436, no comparison. The '436 outperforms the home patrol. The home patrol on a yagi works very well, but the '436 copies the same system on just a 1/4 800 mhz duck reasonably well. The home patrol is un-usable unless it's on a yagi.
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Old 04-22-2016, 12:26 PM
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Each experience will be different, so nobody can really answer your question.

In some cases the hp2 does better than the 436/536 radios, and in other situstions, the 436/536 does the best on that system from where your location is.

Or the ws1095/1098 or 1080 portable.

I have had situations where the cheaper 325p2 or 996p2 has outperformed both the hp2 and 436, but in most cases I would recommend the hp2 or 436 without knowing anything needed to really answer the question, like your location, system to be monitored, etc.

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  #37 (permalink)  
Old 04-22-2016, 2:10 PM
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Peeople keep mentioning Yagi antennas. Where would I get a Yagi for a 700MHz system?
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