The official "I want LSM to work properly in my scanner" thread

[INDY72]

Out of all the current p25 capable scanners on phase 1 the pro-96 with slight internal adjustments, the bcd396xt, bcd436hp, and trx series so far do actually quite well on Motorola, and Harris systems. EFJ kills the 96 due to some anomaly in the data stream. Phase II systems the 436 and trx do as good as a scanner can on LSM. ... No scanner will ever be as hood as an radio designed specifically for certain systems. Scanners are for being at least moderately able to receive most comms not be perfect on just one type.

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[milcom_chaser]

Out of all the current p25 capable scanners on phase 1 the pro-96 with slight internal adjustments, the bcd396xt, bcd436hp, and trx series so far do actually quite well on Motorola, and Harris systems. EFJ kills the 96 due to some anomaly in the data stream. Phase II systems the 436 and trx do as good as a scanner can on LSM. ... No scanner will ever be as hood as an radio designed specifically for certain systems. Scanners are for being at least moderately able to receive most comms not be perfect on just one type.

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Our 325P2 is doing well on P25 Phase II Simulcast...

 

[vocoder]

How do the trx series do on lsm?

 

[milcom_chaser]

Compared to the 325P2, it sounds choppy.


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[vocoder]

Friends trx flashes s and t on p25 phase 1, is this lsm?

 

[INDY72]

Is it simulcast? If it is p25 and simulcast then yes. Linear Simulcast Modulation. If its not a simulcast then no.

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[milcom_chaser]

Don't expect awesome performance professional level performance from the scanner. If you want a piece of hardware that takes advantage of LSM technology then get a Unication Pager. There are more money but well worth it


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[scanmanmi]

Still don't know which scanner is better

I was thinking about upgrading but I still don't know which scanner is better. Are there comparison videos? No Unication. I found this one but I believe what he is calling encrytion is LSM. Now I am reluctant to purchasae the 996P2. https://www.youtube.com/watch?v=FIUdlylttcI Comments please....

So, do companies hire engineers straight out of college

BTW this is exactly what I found after I graduated college in my early thirties and again in my forties. They want cheap kids. Definite age and wage discrimination.

 

[RoninJoliet]

That video is showing the scanner (I do have one) picking the wrong #ing of Motorola scheme freqys just like we had a few years back when systems had to reband because the 866-898 band was given to Vorizon...Its not picking the correct freqy...I have not experienced that on my 996P2.....It seems that its confused by the system being monitored possibly due to the CChannel using a different scheme, it may be a Harris System.....Just my take on what I have seen in the past....

 

[wbswetnam]

Recently I was in Hot Springs Arkansas, and I brought along my Whistler TRX-1 and my Uniden 536HP. The TRX-1 was completely unable to monitor the Hot Springs trunked system; all I got was a flashing "S". I even tried going to different locations in the city - same thing: flashing "S". However, the 536HP was able to decode it just fine.

 

[RoninJoliet]

I have a E.F.Johnson P25 800 trunk system in my area, my Unidens trunk it fine but my RS197's had to be set to P25-Manual instead of P25-Auto....

 

[INDY72]

Older GRE rs scanners have huge issues with those EFJ/Kenwood Atlas P25 systems. Not sure why.

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[scanmanmi]

Is there any receive difference between the 536HP and 996P2 especially handling LSM? Is the 996 the same as the 536 without whistles? I've seen some critical videos of the 996T and XT but has that improved with the P2?

 

[RFI-EMI-GUY]

Older GRE rs scanners have huge issues with those EFJ/Kenwood Atlas P25 systems. Not sure why.

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I don't think those system used linear simulcast, they used C4FM, but because of this, the time differential interference was even worse.

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[mikey60]

Older GRE rs scanners have huge issues with those EFJ/Kenwood Atlas P25 systems. Not sure why.

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From what information I've received, it appears that many of the EFJ/Kenwood systems are not transmitting the trunking tables on the control channel so the scanners don't know how to trunk it properly. Setting them to manual will use the old Motorola standard tables to trunk the system.

Mike

 

[JASII]

officiaThe Official "I Want LSM To Work Properly In My Scanner" Thread

I haven't been following these forums as much as I used to in the past. Is there anything new whatsoever regarding consumer grade scanner properly decoding simulcast trunked systems? I do have a Unication G5. It works great. I was just curious, however, is anybody in the industry has ever actually addressed this issue and said that they will make a receiver to properly receive it in the future?

Of course, now that I think about it, Uniden won't discuss future plans like that, so I guess it means, "Has Whistler ever said that it plans to make a scanner to properly decode simulcast systems?"

 

[APX8000]

Of course, now that I think about it, Uniden won't discuss future plans like that, so I guess it means, "Has Whistler ever said that it plans to make a scanner to properly decode simulcast systems?"

Both Whistler and Uniden have NOT made any statements regarding future developments to deal with LSM distortion. Due to their failure to address the issue and considering pretty much every new system out there is using CQPSK, I’ve refused to invest in any of their new scanners. I’ve owned scanners from both...I remember my 1st trunking scanner I used when EDACS first cane around and then my trusty 780. Then I went the GRE route and had a few that I thought performed better than the Uniden in a mobile environment. I got rid of all of them except my PSR-800, which I use strictly for Unitrunker. I love the TRX-2 and it would serve me well in a stationary environment. But I can’t spend the money when the majority of my monitoring is mobile. For that I have a G5 which I love. It has its downfalls as it’s a pager that is scanner enthusiasts converted. I’d love to see some of the features we suggested added. Or a mobile version of the G5. Everything else I own is commercial equipment, XTS/XTL, APX and going to pick up a Kenwood NX5000 (I’ve owned the 2180/3180/5720/5820 prior). A scanner will never compare and I know that. But Uniden and Whistler have to step up their game. They both have great products with a crap load of features that commercial radios don’t. If they would just invest in some R&D to fix LSM, I’d drop a few grand the next day. If Unication can figure it out, why can’t they ?



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[kayn1n32008]

If Unication can figure it out, why can’t they ?

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Because people buy the garbage that can’t properly decode (W)CQPSK, then come here and complain that it does not work properly.

There is no incentive for them to build a proper receiver to decode any wave form other than C4FM/NFM/FM.



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[Project25_MASTR]

Because people buy the garbage that can’t properly decode (W)CQPSK, then come here and complain that it does not work properly.

There is no incentive for them to build a proper receiver to decode any wave form other than C4FM/NFM/FM.



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Also comparing two entirely different products. The Unication devices were designed as pagers, not scanners which is also why they are band specific. They also have their own range of problems when dealing with large systems but that’s another story.


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[natedawg1604]

Well I fixed this problem permanently with an XTS 5000. Everyone should get one.