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Originally Posted by Mike_G_D
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Yes, I downloaded the TGs to TPCR from that link a while back in anticipation of scanning this system.
I can scan this system's channels as conventional channels with P25 activated using the ICOM s/w. That s/w has a "P25 Received Call Record" function that captures and saves all TG numbers received. Over time I was able to manually map the TG numbers in this list to RRs descriptions. And by scanning them conventionally I can sort of track comm threads, but when it gets busy up there things become more ambiguous... : )
But... the digital demod is pretty spectacular... much better than with my PSR500 or 396T (which, as you indicate, will track this system).
Quote:
Originally Posted by Mike_G_D
It is a true P25 site so the CC is at 9600 baud.
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I ran a spectral scan of the CC and only saw a spike at 4800... there was nothing to be seen at 9600(??).
I did this with the R2500 and the R8500, which gave the same basic spectrum.
[Btw, UniTrunker decodes it just fine, but only Jay's cool app will voice follow digitals on the R2500.]
Quote:
Originally Posted by Mike_G_D
My PSR500 and PRO-197 track this fine though a lot of the voice communications are encrypted (or seem to be at times).
Why does the PCR2500 have problems with the digital voice demod on the 3600 baud San Diego mixed mode RCS? Most consumer radios decode these digital communications fine while they have great difficulty with the pure P25 9600 baud simulcast systems that are becoming more popular. It's odd that the 2500 is having the apparent reverse of this situation!
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I called ICOM tech about this immediately after I got my 2500, and they confirmed I should not expect good results on a simulcast system... likely for the same reason the Uniden doesn't do so well either. Seems like for consumer units GRE has a lock on this (at least for now).
I also see the signal strength of the CC jump all around continuously, whereas the other systems' CCs are pretty much rock steady, except for slow fades for the far away ones.
Quote:
Originally Posted by Mike_G_D
I used to think that the 3600 baud Motorola systems did not use simulcast at all but I guess they do according to some information I recently received concerning how some of the RCS sites are set up. However, while the site I listen to usually (site 02, North Zone) does simulcast with multiple transmitters (and I can hear the resulting phase distortion while listening to the CC - I used to think it was just due to my location as I have many mountains to the east of me) I don't seem to have major problems with digital voice decoding at least with a good CC decode rate.
It just seems odd that the 2500 has difficulty with the SD RCS digital voice traffic.
-Mike
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Odd and annoying... LOL!