New Shack Setup

I recently purchased the house next door to our and moved my mother in there. The bonus is there was a small 12'x16' shed in the backward which has been claimed as my shack. It was already insulated and had a small window unit to keep it comfortable.

I painted a couple of the walls and put carpet in the lower half as well. Eventually I was able to move in my late grandfather's desk (which is nearly 100 years old) and am using it as my radio desk. Still working on getting everything set up, but it is slowly coming together.

 

Camp Pirtle and my BuddiPole

Got a chance to take my BuddiePole out for a run last weekend at Camp Pirtle. The Cub Scout packs were having an adventure weekend and invited hams to setup and demonstrate ham radio.

Had several boys come by although it wasn't too busy there was also an On-The-Air Jamboree going on, so that helped a little. Had a good time and got to exercise my equipment some as well!

GPS Tracker with Pi and UV-5R

I wanted to build a cheap, easy APRS tracker with a Raspberry Pi and a Baofeng radio. Fortunately someone already did and left a trail behind! (Thanks to "Midnight Cheese" blog for the bulk of the details. The blog appears dead, so I copied much of the info here to maintain it.)

Setting up GPS

A simple USB GPS receiver will do just fine for this project. I'm using an old Microsoft USB GPS. In order for the Pi to read the GPS data we'll install gpsd.

sudo apt-get install gpsd gpsd-clients

Setting up the local web server

The main PHP script will read the gpsd information through a JSON file. We'll need to install apache and PHP to serve the JSON file locally.

sudo apt-get install apache2 -y
sudo apt-get install php5 libapache2-mod-php5 -y

Drop this file from the gpsd project into the web server directory, /var/www/ and name it gpsd.php

Execute gpsd.php from the command line to build a needed configuration file.

cd /var/www
sudo php gpsd.php

If you open a web browser on your Pi and navigate to http://localhost/gpsd.php?

Building an HF-VHF Go Box

I've been wanting to build a go box with HF and VHF capabilities. I wanted something that I could use on a daily basis, but then pack and go quickly if I needed too.

After lots of research, I settled on a design similar to KC6TYD's design (which is very popular!) and got a TON of inspiration from this guy. I went with a Gator case with space 6-U.

I've decided to include a power supply but eventually will build a separate "power box" with options for battery, solar, and commercial mains.

I've included my FT-991 and FTM-400xDE (yes, the European version which I bought from a silent key). Also included a Jetstream power supply and an MFJ tuner along with a Wires-X controller. I put a 1-U drawer at the bottom and a Power-Pole distribution strip in the back.

Still tweaking but it works well and I am enjoying it!

Compiling new version of Flmsg

When using the built-in repositories, the newest Flmsg on Ubuntu was 2.0..something. I needed at least 4.0.6 so I had to build it from the source. I followed the instructions included in the README.txt file with a couple of additions.

1. sudo apt-get install fltk1.3 - I needed the fast light kit 1.3. Some was already installed, but additional files were needed.

2. sudo apt-get install libsamplerate0 - But this was already the newest version, so I was good.

After the make and sudo make install, Flmsg worked!

New APRS Node up!

So I've finally deployed the APRS node for full time use at the local Sheriff's department. The node was built on a RaspberryPi 3 connected to my Icom 8000 with a Signalink Interface. It's running Direwolf 1.4 for both digipeater and iGate functions.

I sent some time getting it configured to pass traffic back and forth between the RF channel and the Internet. I used a couple of local filters to only pass items within an 80km radius of downtown Henderson.  I let the unit run 24/7 at my house for about a month just to make sure it was stable and reliable. I had good results with it.

The whole unit was going to the SO, so I wanted a package that was compact and neat looking. The Pi also including the Adafruit 2.8 touch screen which I picked up from Fry's about a year ago for $35. A trip to Lowes led me to an $11 outdoor junction box. I cut a whole for the screen and mounted the Signalink and the Pi inside so they wouldn't move around. I routed the cables through a hole I drilled in the back.

I mounted the radio on top using the stock mounting bracket. I left a USB keyboard dongle in the Pi so I can used a miniature keyboard (made for use with a TV set-top box) as an input.

The biggest hurdle was trying to find a way to log into the Pi once it was deployed. It would be behind a firewall on a guest Wifi network. I eventually found ngrok (thanks to my brother-in-law). Ngrok is a small program that facilitates the tunneling of a variety of services to ngrok's servers. Then I can connect to ngrok and track back to my Pi. The basic level of service is free and plenty for my needs.

I deployed the unit and its been working great. From my home or office I can log in, update, restart or reconfigure it as needed!

Cell phones cause cancer...Uh?

UPDATE: The Wall Street Journal has published a more balanced (although not completely hysteria-free) article on the study.

Cancer from RF? Buckle your seatbelts folks because the roller coaster is just getting started. Like an early teaser trailer for an upcoming blockbuster movie, the first few details from a new study looking for a connection between radio waves and cancer were released this week. The headline screamed the sensational claim: “'Game-Changing' Study Links Cellphone Radiation to Cancer”. However, what the study actually found may be far from settled.

First, let me say I have a great interest in this topic. Not only am I an amateur radio operator who uses relatively high powered RF devices on a frequent basis, I also lost a close friend (and former boss) to brain cancer. Although he was just 37 when he died, he had already spent many years using early model cell phones and other equipment in the broadcast radio industry where he, no doubt, was exposed to much higher levels of RF than the average citizen.

Do I want there to be link between RF exposure and cancer? No, absolutely not. However, do I want to find a away to prevent the cruel decline and death that my friend and his family endured? Absolutely. Let's be absolute in both cases.

Let's take a look at the study's report and dig through some of the findings.

First, the report is NOT a complete report on the study. According to its authors, it only “presents partial findings” of the study and notes that analysis of the complete data is still being conducted. The