Thanks for sharing Tom.

I gave a listen for a short period. A lot of the traffic was rather difficult for me to understand. There were times I could tell what was being said, other times not so. Probably about 50/50.

Our system is currently still patching digital over to an analog channel, so it's a mix of both depending on the user. For some reason the digital traffic is a lot easier to understand.  90% of the time it is copyable. The remaining 10% is lost to the technology and I can't pull it out with my ears. The stuff still analog is, well, absolutely great.

The Uniden scanner I had for a short while (programmed it for a friend) was pretty dismal on digital.

Chuck

 

On Sun, Mar 26, 2017 at 7:49 AM, Chuck Kelsey wb2edv@roadrunner.com
[op25-dev] <op25-dev@yahoogroups.com> wrote:
> Tom,
>
> Are you listening to P25, phase 2 simulcast? If so, how are your results and what hardware are you using/
>
> Chuck

Yes. Have a listen yourself:
http://allstar.kd7lxl.hamwan.net:8000/

It's monitoring two talkgroups, so if it seems like it's cutting
between two conversations that is why. Compared to my Uniden scanner
there is a lot lower latency at the beginning of each transmission
(the Uniden will miss the beginning of the transmission).

Hardware is
- 1090 MHz ADS-B antenna at about 20 ft.
- SMA tee (other side goes to the ADS-B receiver). This messes up the
impedance, but not really a big deal for receive.
- NooElec RTL-SDR with TCXO https://smile.amazon.com/gp/product/B01HA642SW/
- Intel NUC DN2820FYKH with Intel Celeron N2820 (I know I said I
started with a VM, but I transitioned to the Nuc for permanent
installation.)

Biggest outstanding issue I want to correct is audio level
equalization / compression. The dispatch consoles seem to a lot hotter
than most of the subscriber radios. I have not been able to get LADSPA
dysonCompress to work.

Tom

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