Lmst

A while ago I upgraded my old #netbook running #op25 from #LMDE5 to #LMDE6 - I had to recompile OP25 and a couple of other small things to get it working.
But it has never worked as well as it did with LMDE5, so today I've decided to wipe the whole thing, and start over with LMDE5
I don't really need it connected to the internet, but was thinking about setting up streaming. I think it might be too slow do that correctly.

#LinuxMint #LMDE #32Bit

An old Acer Aspire One netbook currently running LMDE6 32 bit, and OP25 software

Soon running LMDE5 and OP25 software.

The computers name is Lestrade, because it's a little slow, but gets there in the end.

At one time someone was streaming the county out to OpenMhz, they have since stopped. So I am thinking about setting something up. I have OP25 installed and working pretty well. I am not sure I really want to completely change my setup and I know I don't want to add any more SDRs. So the question is anyone know of a good tutorial/resource for setting up #OP25 using a single SDR to stream out to say #OpenMhz ?

#SDR #streaming

I think I'll stick with #OP25 which works well on a really old netbook - and works with only one #SDR - Granted, I can only listen to one stream at a time, but really, it's kind of hard to listen to two conversations at the same time anyway.

Wanted to thank @k9swx for the video, and the introduction to sdr-trunk thou.

Thanks.!

#rtl_sdr #SDRTrunk #OP25 #P25

Because I was hearing a lot of traffic from areas not really around me - I changed/updated my talk groups and blacklist for my OP25 setup.
I went from only 3324 talk groups blacklisted to 6085. A big change.
Also black listed some of the public works and public transportation talk groups. So I went from 636 TGs to 210. Now it's so quite.
I still hear a lot of squad/fire calls. But it's kind of nice to know I live in a pretty quite area, & not much happens around me.

#OP25 #Police #Fire

After I finally got OP25 working on a raspberry pi - I went a little crazy. I wanted a portable version. And here are some attempts of some of my ideas....

I picked up the small SDR dongle from eBay for a few dollars, I didn't like a large dongle hanging out of the Rpi. Turns out it is really really bad, and very heat sensitive.

See description in the pictures for more info, I ran out of characters to fully document 😉

#RapberryPI #Laptop #OP25 #HamRadio #SDR #portable

A Raspberry PI 3B+, with small generic SDR, and speaker, and 3.5" screen
The Rpi is small, lots of extra wires, and isn't bad, but very heat sensitive. With the small SDR dongle, with the raspberry pi being heat sensitive, and the dongle also - this just did not work well when the car got hot from sitting in the sun. I went back to the large dongle, and same problem - very sensitive to heat.

A Dell Latitude D630, sitting on the front seat of my car running - Linux Mint and OP25, I 3D printed a holder for the SDR Dongle, and put a 2 meter/440 antenna on - not the best choice, but saved from having extra wire for the antenna. (Maybe a better solution would be to mount an external antenna on the car for the 800Mhz band). But this worked for now. I used a short USB extension cable for the SDR - this is really the only wire hanging off the back side of the laptop.
The speakers are loud, and the battery will give about 2 hours of time.
The biggest draw back is it's not that "portable", and takes up quite a bit of room in the car.
But so far this is the best I've come up with.

My next idea was to try an old Acer Aspire One - This actually worked pretty well, the speakers are too small to hear thou. This is running a 32-bit version of Linux Mint (The Debian distro - I forget what it's called). Heat didn't seem to be a problem, But not being able to hear it - kind of a problem. External speakers would help, but kind of defeats the reason to use a laptop. SO -->

A small SDR I found on eBay for a few dollars, actually it ok as an SDR - it is very off frequency - by a lot like 200+ Mhz off. And it drifts badly when it gets hot. So Not the best choice for a portable OP25 project. But I wouldn't have known until I tried.

It seems to be ok if I am on my desktop and just want to listen to FM/WFM and analog.
So not a complete waste, but not great either.
It doesn't support the OTA TV used in the United States either, so it's pretty useless. If I'm honest about it.

"portable" Raspberry PI OP25 setup, I tried it out in the car this morning, it worked fine, the speaker was a bit hard to hear, but that is easy enough to fix. But I thought maybe it should be in something that would make it easier to carry....so I came up with this Ikea small box..... now I'm wondering if it will get too hot inside the box.
#RaspberryPI #OP25 #DigitalRadio #HamRadio #Scanner

raspberry pi 3b with lcd screen, sdr radio, small speaker, antenna, battery, setup to run OP25 and be "portable". Sitting on center console in my 2008 Crown VIC CVPI. Also seen in picture, mic for Anytone 578UV, head unit for Motorola PM1500 radio, and Lanchonlh APRS HT radio. And a bunch of wires for the OP25 radio.... This setup worked, but wasn't as "portable" as I wanted.

Another view. raspberry pi 3b with lcd screen, sdr radio, small speaker, antenna, battery, setup to run OP25 and be "portable". Sitting on center console in my 2008 Crown VIC CVPI. Also seen in picture, Anytone 578UV, head unit for Motorola PM1500 radio, and Lanchonlh APRS HT radio. And a bunch of wires for the OP25 radio.... This setup worked, but wasn't as "portable" as I wanted.

"portable" OP25 project, inside a small Ikea box, with mini-keyboard, raspberry pi 3b+, sdr radio, and battery, wires running though the hole in the box going to speaker, and antenna (not seen in picture speaker and antenna) This will make the whole thing easier to transport, but now I'm worried it will get too hot inside the box.

I attempted to get this to boot OP25 on restart, but keep getting an error that the software couldn't find a terminal, anybody know a work around for this?

Also I have a 7" and 10" screen that probably would make things easy to read, but also use a lot more power. I am honestly not sure I need a screen at all, except to start the software.

#OP25 #RaspberryPI #RPI

Adventures with OP25 - This is a Raspberry PI 3b, with just a CLI, and the legacy version of Raspbain - It installed OP25 with no problems at all. It probably would work better on a PI 4, but it works. The screen is pretty small, so it's hard to read (3" HDMI screen maybe 3.5") Battery powered, battery powered small speaker, and battery powered mini keyboard, lots of batteries LOL.... I have no idea why I had suck a hard time get OP25 working a few years ago. #OP25 #RaspberryPI #RPI

Raspberry PI 3B with 3 or 3.5 inch screen, external battery powered speaker, and battery pack. RTL-SDR in usb port. Running OP25, the font is very small and hard to see.

I'm going to need to get another Raspberry PI 4 soon, I am not sure I want to dedicate the PI 400 exclusively for the task of running OP25. But for now, it is working, and I am learning more about how OP25 works. And the control channel - Which is listed as being for my county, but seems to include some surrounding counties as well.

#HamRadio #Scanner #OP25 #P25 #RaspberryPI #Rpi

#OP25

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