826) CW Forever
What is ZUT? It's the Coast Guard
CW Operators Association. For more info click
Since starting my antenna project, I ran across an item
that seemed to do exactly what I needed. That would
be the Basic Stamp 1. Parallax Inc. came up with this
microprocessor and it is a blast to work with. I have
some folks interested in learning about this little gem and
I think if you're interested in antenna controls, it would
serve you well to take a close look at this Stamp and the
larger version with more commands and memory.
The U-100 Project
Over a period of time, a ham named Andy (VK4FHAW) have been
communicating and he has come up with a new control system
using the parallel port to control his antennas. This is the
kind of thing I've been hoping for to happen. He has given me
permission to publish his email and this one sums it up quite
nicely. It also contains a link to his You tube video which is
quite nice. Thanks Andy, for being a newcomer to this end of
ham radio and doing an excellent job.
If you would like to contact him for more info, below is
his email address.
Just wanted to give you an update how things are going. At
this stage the system is fully operational with Azimuth and
Elevation control with a parallel port relay interface,
receiving the data from either nova or HRD.
I had several good leo contacts already, funny enough
mainly on the SSB birds, AO07, 29 and 52. Some FM on 51,
although its QRP transmitter only, and that only sporadic
active over Australia - so Oscar 7 Mode B is much more fun,
considering a good pass lasts for about 22 minutes. I've read
that they want to activate SO-67 over Australia in the second
half of July - would be interesting to see how this one works.
I've put a little youtube clip up which shows the system :
I made a few changes to the software (other then the
parallel port stuff), and changed the layout a bit. Let me
know if you want to have the source code in its current form.
I am quite impressed how accurate it actually is. I need to 0
the az and el values about once every 10 days, and only did 1
full calibration run so far. Considering the beam angle of the
antennas I am using is 30 degrees +, a 5 degree accuracy is
more then sufficient.
Thank you so much again ! Without all your hard work that
wouldn't have been possible.
I want to build myself now a higher gain UHF and VHF
antennas (with plans from http://www.yu7ef.com/) to improve my
SNR. Also thinking about a mast mounted pre-amp, but not sure
if its worth it (FT 847 has a pretty good low noise pre-amp
The Basic Stamp Controller
Please go to the U100Info link at the
left. There is no charge for the program. The program
works with either Nova or Ham Radio Deluxe.
Click to enlarge
Checkout the Alliance
U-100 rotator page on the left. My satellite tracking program
for the U-100 utilizes Nova for Windows.
Just a couple from a very long time ago.