Winlink on Raspberry PI

I've been wanting to find a way to check my Winlink using my Raspberry Pi. I was not too familiar with AX.25 and all of its workings, so this was an education process from the start.

I'm using a Pi 2 running Raspbian Jessie, along with Direwolf, a Singalink and a Baofeng UV-5R. I maintain a 1200 baud packet RMS Gateway at our our local Office of Emergency Management.  Here's the steps I took, with great thanks to Andrew's Memory Blog who was doing something similar.

1. Connect the radio to the Pi. In my case, I had a spare Signalink which I used. I built an audio cord from half of an old Baofeng earpiece and some Cat5 cable.
2. Update your Pi with: 'sudo apt-get update' and then 'sudo apt-get upgrade' 
3. Download and build Direwolf. Instructions for doing so on a Pi are here. These instructions are for an iGate, but the basics of getting direwolf on the Pi come straight from the software author and as great. 
4. Configure Direwolf with your callsign and sound card. The file to edit is direwolf.conf, found in the installation directory. VERY IMPORTANT: This tripped me up even AFTER reading this. Be sure to avoid the  “# ADEVICE – plughw:1,0” line. It looks a lot like the correct “ADEVICE  plughw:1,0” line, but takes input from stdin instead of the sound card. Uncomment the one WITHOUT the dash in the middle of it. 
5. Install AX25. Next: sudo apt-get install ax25-tools ax25-apps libax25-dev libncurses5-dev
6. Edit /etc/ax25/axports and set one line to:  radio  mycall 1200 255 2 VHF
7. Make sure all the other lines in axports have # in front of them (it doesn’t like blank lines).
8. Run “direwolf -p” to get the KISS port. It will show up as something like /dev/pts/2. Once it’s running, move to another terminal window

Rasp Pi crash causes outage

Well, I had a Raspberry Pi crash on me earlier today. It happened to be the one serving as a data bridge for my new weather station. This $35 computer's single purpose is to take data from the station and upload it to the Internet. Unfortunately, the boot partition on the system's SD card suddenly corrupted on me. It took a little work, but I was able to install a new OS and we are back in business!

I am now, once again, uploading data to several weather sites including: Weather Underground (KTXHENDE9), WeatherCloud (cool new site), WeatherBug and the Citizens' Weather Program (via Amateur Radio). There is also this cool display.

The whole process has been a fun experience, especially learning the ins and outs of weewx, the program that handles the weather data. It's a native Linux program and runs very well, even on a relatively old RasPi B+.

For those interested, you can view the raw APRS packets sent here as well as a nice table of weather data here.

New Weather Station Online

After a couple of failed starts, I've finally got a new weather station up and running. The station itself is an AcuRite 2064 with a 5-in-1 Sensor Combo, located just outside my office window.

I run Linux on my office computer and don't keep it on all the time, so I decided I wanted a dedicated system to maintain the station data. So, I spent some time trying to get an older Raspberry Pi computer up and running with weewx to accept the data and upload it to the internet. Finally got it working and the data is now uploading to findu.com (via APRS-IS) as well as WeatherUnderground.

Coincidentally, we've had some storms and rain come through today, it's already getting a work out!

Here's a link to the Weather Underground site and a link to the APRS site.

The VOA Radiogram

Map of "Media Freedom" received
via Fldigi during the VOA Radiogram

When I was the GM of the local FM radio station, I would give presentations about the station. I told people about chasing the news and taking picture with my phone which always produced at least a couple strange looks. "You take pictures?" someone would say.  I would always joke, "Sure, doesn't your radio display pictures? You might need to get a new radio!"

Nowadays, the truth is, you don't need a new radio, just a computer (or Android tablet or phone) and you CAN receive pictures with your radio. And while fellow hams may protest that this is nothing new (and they're right) what is new is seriousness with which the U.S. government is taking it.

Photo for a story on "eRadiators" received 
via Fldigi during the VOA Radiogram

The Voice of America (VOA) broadcasts hundreds of programs in dozens of languages around the world on shortwave frequencies. And up until fairly recently, it's all been audio, such as music and voice. But now, each week, the VOA is sending what they call a "Radiogram." Sent in a digital format (MFSK32, to be exact) the text-based radiogram includes 30 minutes of news and information. It also usually includes one or two pictures.

Anyone with a $10 SDR dongle (made in China by the millions), a computer, tablet or smartphone, and a free piece of software called Fldigi, can receive the VOA's Radiogram as well as the accompanying pictures.

The government is excited about this "new" project because it allows the VOA to send news, information and even graphics or photos to anywhere on the planet, especially places where the internet is severely censored or even blocked by oppressive regimes. What's more, the text or photos can be printed and distributed to others who might not have access to the broadcast, but less a "free press."

I recently received one of the VOA's Radiograms, including the photos. The lead story discussed a recent report detailing the state of the media in countries around the globe and graded each nation on the amount of "freedom" it allows its media. Here's the weekly VOA Radiogram schedule. I've included a couple of the pictures I received.

Example JT-65 QSO

I've really come to enjoy JT65 and the slooooow QSOs is allows. I'm able to work some great DX with a very modest station while working on other things on my computer. NICE! I recorded a quick video of a recent QSO with an Italian station.

Uncovering a Ham Radio past

I was first licensed as KB5QYH while still in college. I had always wanted to be ham radio operator,  evening checking out a book ("So you want to be a Ham") from the local library while in high school. But I never knew how to find a club or even an individual who was already licensed. Google didn't exist, of course, and there was no Instructables to guide me through it.

I did know that my father had been a ham, and his father as well. My mother has a garage littered with relics of the 1950s and 1960s when he had been both an amateur and a professional in the radio industry. But he had died when I was five and all I could do was fiddle with the old equipment and wonder how it worked. 

A little Propaganda from Cuba!

I recently got a QSL card from a Cuban station. What until you see what was on the back side!

Read the whole story on our club website: RuskCountyARC.com