Amateur Radio Station
      
1. Automatic Power on/off circuit. This project allows radio equipment to be turned on and off in response to the starting of an automobile engine. This looks at the different voltage levels at the battery terminals when the battery is being charged or not. With the circuit I automatically turned on an radio tracking device without the use of a toggle switch of any kind. In my case, I had the rig in the truck and didn't have to  monitor it at all.

2. Modifying a WRT54G router to be an APRS I-Gate. It turns out that some of these Linksys routers are programmed with Linus and as a result are fair game for ham radio operators. These pages go through the steps required to reprogram yours and install APRX.

           APRS I-Gate from a Linksys WRT54g V2 Wireless Router Part 1
           APRS I-Gate from a Linksys WRT54g V2 Wireless Router Part 2
           APRS I-Gate from a Linksys WRT54g V2 Wireless Router Part 3

3. Raspberry PI           APRS for the Raspberry PI .... Pa0esh site
                                        Mesh Networking Broadband Hamnet
                                       Broadband Hamnet    General Info   
                                       40 Cool projects for the Raspberry PI
                                        Raspberry Connect ---- Ham Radio Packages
                                        A low cost platform for Amateur Radio projects
                                        HSMM-MESH for the Raspi
                                        TNC-X for Raspberry Pi

Rasperry PI 3 is now on sale

   The Raspberry Pi 3 Model B is the third generation Raspberry Pi and 10x faster than the first generation Raspberry Pi. Additionally, it incorporates built-in WiFi and Bluetooth connectivity.
Supported Models
WRT54G v1 to v4
WRT54GL v1.0, v1.1
WRT54GS v1 to v4
WRT54G-RG
PROJECTS
Fox Hunting or
Radio direction Finding
This page is an index to the projects I have done over the years and upcoming ideas.

I have spent most of my working life involved with the trades, mostly as an electronic technician. I spent lots of time fixing things and designing and building little projects of use around the home, at work or in the course of pursuing the hobby of amateur radio.  A few are documented here.
Radio Direction Finding ( RDF ) or Fox Hunting is a very enjoyable facet of the radio hobby. The idea is to have a hidden transmitter at some location, the rest of the group uses their handhelds or small beams to use their direction locating skills to find the fox. Here are a few links to RDF'ing that explain it better than I can.

Homing In

PA8W RDF

Equipment Ideas

This is a pdf file on RDF projects  ( copy/paste to your browser )         http://www.dhawke.com/kq1lweb/documents/rdf.pdf
This RDF antenna is made from 2 empty bean cans, a bnc bulkhead mounted on the bottom, with a rubber duck antenna. The whole thing soldered together, with a coax running to the receiver. The slot as shown is a bit large, I covered it with aluminum tape to reduce the aperture, but it worked fairly well.
RasTherm - A Smart Thermostat built on the Raspberry Pi  By: Bertrand Zauhar, VE2ZAZ
OPEN REPEATER  The OpenRepeater Project is the development of a low cost, low power, but a feature rich duplex Linux based amateur radio repeater controller using single board computers (SBCs) like the Raspberry Pi 2 and Beaglebone Black.
Asterisk Allstar on the BeagleBone Black and The Raspberry Pi 2  --  Allstar connects RF systems with full duplex quality audio. It also gives the user a choice in how and where they connect. Private or public group or individual connections can be setup quite easily. If you are in a restricted living environment like a retirement home or HOA that does not allow antennas Allstar gives you the radio feel without an obtrusive antenna or big expense.
ZoneEdit Dynamic DNS Updater -- Sends you an email when your Dynamic IP Address changes