W5GGW's home page
Back in 1982 or so, I met WB5RWS (now N0LID, go figure). That was my second
exposure to Amatuer Radio. Steve had a TRS80 Model-I, and a 2-meter HT.
I learned about programming computers on his Model-I (now I do computer
software for a living!). I learned Z80 assembler, and created a program
called Digi-Comm that used the cassette I/O and motor control to key the
PTT and send digitial data between stations. It was called Digi-Comm. It
never really had a measureable distribution. I think at most 3 HAMs ever
Digi-Comm provided interactive messaging a facility to leave a message
and, a canned response for people out of touch with their equipment. This
was a basic implementation of what Bob Brunniga (WB4APR) has done with
text messages in APRS. (but, the transport did not use AX.25 or otherwise
it was pretty crude).
I finally decided to get my license in 2000 after being encouraged by
KA9MVA to do so. I could play with APRS, and use some of the Java software
that I created for him so that we could plug APRS into our work MUSH. This
allows him (and now me), to receive and soon send APRS traffic using the
MUSH environment to talk to a robot user that is a Java program that then
talks to APRSD to effect the appropriate actions.
My HAM page will be containing more information about my APRS exploits
as they occur. I have 3 IOPENER's that I plan on turning into sophisticated
APRS display stations too, so this should be fun and exciting.
I've used an I-Opener
in my van for APRS stuff.
Check out JeAPRS,
my Java based APRS application toolkit and development environment.
I also have a bicycle
rig set up too.
- I've put together an ATV rig for the bicycle.
- I've put together a simple ATV backpack rig too.
I have a Kenwood
TH-D7A, HT for APRS operations. I am dealing with
the fact the Kenwood did not foresee people using the HT day in day out
pluging and unpluging the connectors for GPS, mic etc. I wore out the jacks!
I had to resolder the recepticals onto the board multiple times, and the
last soldering operation rendered the device non-operable.
I did buy a 3A, 12V, regulated power supply from Radio Shack to use at home.
It would have been so nice for Kenwood to provide a 1.5 amp at 14 volt
supply with the radio so that you could just plug it in and run it with
the battery always charged and ready for use. The 60hz hum on transformer
wallwart supplies would have been noisy. But, it is possible to build a
supply that would work in a small package for a small price.
Clearly, there is a wide range of uses for the D7A, even though it is
an HT. I find that I can use EL power levels from my house to do APRS and
reach most repeaters in the Tulsa area.
I have a Swan HF-700S that I was given by W5UIP (now SK). This is a
usable radio that I have grown accustomed to tuning up. I have a handful
of spare tubes for it. I use a hand made G5RV antenna for the Swan.
I've talked on 10-80m with the G5RV and no tuner.
I have a Yaesu 857D installed in my Dakota Pickup Truck. I have a simple
Hustler antenna system with the 54" mast and coils for 17m, 20m, 40m and 60m.
The antenna system works well for me. I have the processor turned on all
the time with a level of 68. I have the SSB mic gain set at 86 I believe.
This gets me good audio reports and people think I am strong for a mobile.
VHF and UHF Operations
I bought two Yaesu FT-1500M 2M mobile rigs to use for APRS and other 2M
packet operations. There was a good deal on these that I could not turn down.
I have an FT-8800R that I use at home for repeater operations. I do put it
into my wifes car when we go on trips in it. I tuck it under the seat and use
an 8' extension cable to velcro the head to the dash. This seams to work fairly
well for me.
- KA9MVA has some interesting links...
- Some Tulsa Area frequencies are listed here.