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#packetradio

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Good... afternoon y'll!! Out and about today. Got up at 0730 and decided I was not going to spend the entire day doing chores and such.

Drove out to a local state park (Gifford Pinchot State Park) to play radio. Since I developed my radio go kit, I decided to test everything out, HF and VHf. Started with packet radio, trying to make contact with my home BBS over VHF frequencies; no connection. Went through digital repeaters with minimal trouble, but then the BBS went wonky. One VPN and SSH connection later, I reset the BBS and made connections on multiple frequencies. Woo Hoo!

Next up was the HF radio and FT8, a weak signal communications mode. I've made a few contacts at 25 watts on the portable vertical antenna. Decided not to stretch out the NVIS dipole as there are too many kids running around and I don't want one of them running into the wires. Next time I'll find a spot a little less populated.

So far so good. I got out of the apartment, it's not hot or humid out, and I've only gotten rained on a little bit. Keeping an eye on the weather, because it takes about a half hour to get the stuff back in the car.

Trying not to engage with all of the CA crap going on right now. As soon as I heard the deployment of NG troops, my mind immediately went to the move "The Siege." Not good.

Stay safe and LET'S BE CAREFUL OUT THERE!!

#amateurradio #hamradio #ft8 #packetradio

@firefly @BakerRL75 @@czarbucks @@amyedge @ai6yr @Jennifer @AE4WX @technodad

I think it's worth me doing a new #Introduction:

Hi! I'm Chris! I write code, I make things, and I parent.

My posts are generally about a few key areas: #Programming, #HamRadio, #TTRPG and #Parenting.

As far as programming, I mostly focus on #DotNet #CSharp professionally, with a smattering of #WebDev using #TypeScript. For my "not professional" development, I do a lot of #GameDev in #Godot (usually using C#, though not always!), and I adore #FunctionalProgramming, particularly in #FSharp, but also in many other languages! I stream software and game development on Twitch at twitch.tv/b4ux1t3. The schedule on there is not currently correct (January 2025), but should be soon.

When it comes to ham radio, I mostly focus on #DigitalModes, though I do a little bit of #POTA and #SOTA (well, I want to, anyway!). I'm a big user of #APRS and #PacketRadio. I try to be active on #YSF via the inimitable KJ7OMO@mastodon.radio's (edit: removed the mention here to prevent accidental mentions!) pride radio network, though mostly I listen. If you'd like my callsign, feel free to DM me. I do not list it publicly, but I'm not shy about handing it out in a more private setting.

Regarding TTRPG, I'm mostly a forever GM who runs #ShadowdarkRPG, #BladesInTheDark, #MorkBorg and #Mausritter, though I love most #OSR games and often mix and match rules and stuff. I don't _hate_ #DnD, #dnd5e or otherwise, it's just not the sort of thing I enjoy running. I also GM professionally on startplaying.games/gm/b4ux1t3!

Outside of that, some of my posts are about #Crochet, #BookBinding, #Woodworking, #Mathematics, #Linguistics, #TokiPona and, well, lots of other things

I have lots of links in my profile if you'd like to know more about me!

TwitchTwitchTwitch is the world's leading video platform and community for gamers.

New Blog Post: Packeteering Part I

vk7ben.au/2024/12/15/ax-25-pac

This post covers a lot of my initial setup of a Linux based packet radio node. Future posts will hopefully go a bit more into how packet radio in Linux works, talking on subjects like netrom, rose, fpac and hopefully covering how to set up and receive messages using a BBS.

CQ DE VK7BEN · AX.25 Packeteering Part IPacket Radio with a PacComm TNC-320 and Icom 706MkIIg It really doesn’t feel like it was that long ago since I wrote about packet communications, however it is just over 9 years already, whic…

High level, packet radio is a collection of technologies that allows people to send and receive arbitrary information synchronously or asynchronously amongst themselves. The information could be personal correspondence or if you're like a few of our members, which birds your BirdNET system has heard.

My slides for my #EuroBSDcon talk "Building a Modern Packet Radio Network using Open Software", an overview of what myself and others have been doing to support the UK Packet Radio Network, are available on the con system:

- Slide PDF: events.eurobsdcon.org/media/20

- event page events.eurobsdcon.org/2024/tal

The talk is available on the live stream feeds - I start at 3:21:50 or at the following direct link:
youtube.com/live/u_bdSqqHm58&t

I hit most of my main talking points, but there is some stuff in my notes I missed. I had a blast and it was a great weekend of pragmatic, technical and interesting conversation! I'm open for chat and can talk about radios alllll day!

I have bought a pump. Its job is to spray the house all over with water when a #bushfire comes. There's only so much water, so it needs to be timed right, otherwise the house will dry out before the heat arrives.

So, attached to the pump is a controller made by the thoughtful and nice Graham and Matt at Small Farm Services. (smallfarmservices.net.au).
I send it a 'start' over SMS and it starts. Later it sends me status messages. Marvelous.

The trouble, of course, is that #mobile #networks get turned off and/or fail during bushfires.

#Optus, #Telstra, any chance you could give me an indication of failure modes during fires? No, I didn't really think you would. <rolls eyes>. Did you know that #Optus funded a CRC into bushfires at ANU? It did/does really good stuff. (brcoe.org). Optus has issued press releases like this: optus.com.au/about/media-centr.
I cannot find out what MY base station's remaining vulnerabilities are, nor understand it's dependancies. Can *that one* last 20 hours without power? Can it's upstream links? Can I send an SMS over it if it is disconnected from Optus' authentication, authorisation and billing systems? What about Telstra? Coverage of both is good and I can see both towers - an advantage of living on a hill.

Without solid answers, I am looking to add some backup communications channel. I have an existing #LoRaWAN setup, and am wondering about firming it up and extending it out to very long range. The safe place I will be during the fire is about 10km away. Maybe that is the best independent path? But, maybe I should use some UHF data medium instead of LoRa? Something plainer, more commonly understood and dull?

Questions:
Anyone have resilience information for 4G SMS networks?
Should I buy a #Telstra or Optus #SIM?
Backup medium? What is the most solid thing for, say 10km?

What does The Department of #Radio Mastodon think please?

Small Farm Services (AU) - Rooftop Sprinkler Systems, Solar Gate Solutions, WA, Light machinery servicing & repairs, GSM Auto Modules, Fire break spraying/raking/slashing, Autostart modules, GSM module, Remote module, Remote start, Phone module, SFS01, Western AustraliaWelcome to Small Farm Services! - Small Farm Services (AU) - Rooftop Sprinkler Systems, Solar Gate Solutions, WA, Light machinery servicing & repairs, GSM Auto Modules, Fire break spraying/raking/slashing, Autostart modules, GSM module, Remote module, Remote start, Phone module, SFS01, Western AustraliaWelcome to Small Farm Services! - Small Farm Services (AU) - Rooftop Sprinkler Systems, Solar Gate Solutions, WA. Solar, Gate, Solutions, WA, Perth
#RF#4G#data

Finally had some time and inclination to work on my own stuff… so I'm doing some further work on `aioax25`.

Specifically, I used a Linux VM with the kernel AX.25 stack to try a connection to a BPQ32 node, dumping the traffic with `socat -x`… then dissecting the packet dumps to figure out what I was getting wrong. From there, I was able to reflect those changes into the code base.

I now have some Python code that crudely replicates the `axcall` utility in `ax25-utils`.

github.com/sjlongland/aioax25/

Lots of sharp edges to clean up… and I've got to test connecting the other way. I'm just writing some unit tests right now.

GitHubaioax25/aioax25/tools/call.py at feature/connected-mode · sjlongland/aioax25Asynchronous AX.25 library using asyncio. Contribute to sjlongland/aioax25 development by creating an account on GitHub.

Inspired by late night mastodon.radio conversations, I put in a low-ball best offer on a TRS-80 Model 102, not expecting it to be accepted, but it was. So I guess TNC field packet is a go? What have I done? 😜 🤠

Looks minty. I will order a replacement RAM backup battery and a re-cap kit just in case (battery certainly needs to be replaced), that's like $20 in parts. And a DB-25 to DB-9 RS-232 cable.