Time Delay Affects P25 Simulcast Reception

[WA0CBW]

For those wanting to know what affects P25 reception see the article in the April 2014 issue of Mission Critical Communication magazine. The article titled "How Time Delay Interference Affects P25 Coverage" describes how simulcast signals sent from different sites can be distorted because of the time delay in reaching the radio receiver. The article also indicates that going from Phase 1 to phase 2 can distort the signals even more. The article does a good job of explaining the issues in layman's terms.
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[policefreak]

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What is the article called? Is there any way you could post a link?

 

[kruser]

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What is the article called? Is there any way you could post a link?

All you need is spelled out in the OPs post.
Here's a link but not sure it will work if not a subscriber.

http://digital.olivesoftware.com/Ol...pageno=MzA.&entity=QXIwMjcwMA..&view=ZW50aXR5

 

[DisasterGuy]

TDI is an issue with any simulcast system (yes even analog conventional) that must be engineered. Part of the impact with P25 is that Linear Simulcast Modulation as part of the standard is supposed to allow timing to be less precise as it is designed to overcome TDI.


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[policefreak]

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Very informative article.