It has been a while.
How do I get Predict and earthtrack to work ?
I have predict running as a server.
I see xearth and xplanet as background image options, and I can bring up
I thought running earthtrack2 -c ISS -u 15 -h localhost , bought up a new
Andrew Rich VK4TEC
Hi, ,i received a FM broadcast kit for Christmas, the power output is "100mW". If i installed an external antenna (for range, a couple of blocks) would i be infringing on any regulations?. Any help appreciated.
73 de ve6itv Scott
Hi folks, Bruce Pritchard has been a silent key for a few years now, but he was a thinking man, and I thought I might share with you on this list, something he made me send out on packet years ago.
Bruce designed a very interesting UHF driven element for yagi use.
Bruce's callsign was VK3ZUQ. He was also at one time the Champion fly fisherman in the ACT. Bruce served in the armed forces in New Guinea during WW2, narrowly avoiding obliteration, while driving a fully loaded fuel truck that was straffed by a Japanese Zero. After the war he spent time in the Antarctic research teams, spending time on Heard Island. Bruce was for a time the weather man at Maralinga in South Australia, during several atomic bomb tests.
The theory and math bits to enable you to build this design for any frequency are included.
Thanks for reading, all the best for the New Year.
It's simple! Sell your car for just $30 at CarPoint.com.au
I am Chiu-Teng Tsai (BM6ERA) from Taiwan. Now we are building a mobile ground station. One of our problem is how to calibrate the azimuth angle. Use compass only, or any better solution? Thanks for your help!
> got our two OLPC's today on the door step.
> Son already found some source code and a game
> and a complier or interpreter built-in.
> I have not looked yet to see what code it was...
Also found it has an audio Oscilloscope built in.
with both AC and DC settings. Oh, and a Camera
as well as a ranging device. Apparently you can
range from one OLPC to another to measure distance.
I assume it is accoustic...
> Ordered another one (for me), since the deal
> runs through tomorrow. The 2 kids will take
> our first two off to school, so I just
> realized I needed another one for me....
> The 18/20 year old kids seemed to like them
> (I was hoping they would ignore them and leave
> them for me to play with)...
> Can't wait to see what the ham radio creative
> minds come up with for these things. Bob, Wb4APR
Hi John, David,
did not know we had that "one year" quote on our website... will ask the
website guy to change that:) Our planned orbit has 630km altitude, and as
David points out, the satellite might last there for decades! And hopefully
it will still work then, although we have designed the satellite to last for
one year only (that's where the one year quote on the website comes from I
guess), any time longer would be a bonus!
Right now, the team is gearing up towards the launch, keep an eye on the
website for updates.
Wouter Jan Ubbels PE4WJ
I ran a script
wget -qr www.celestrak.com/NORAD/elements/amateur.txt -O amateur.txt
wget -qr www.celestrak.com/NORAD/elements/visual.txt -O visual.txt
wget -qr www.celestrak.com/NORAD/elements/cubesat.txt -O cubesat.txt
/usr/bin/predict -u amateur.txt visual.txt cubesat.txt
But it was only when I stopped the server I had running, and restarted it
that the keps were used.
I had a 5 degree difference between NOVA and predict.
When I restarted predict, then predict matched NOVA.
Is there a way to hit predict on the fly , or does a server re-start have to
be carried out ?
Andrew Rich VK4TEC
>From Delfi's website:
How long will the Delfi-C3 be in orbit?
The drawback of the altitude at which the satellite will fly is the decay of
the orbit. Due to atmospheric drag the satellite will lose energy, and thus
altitude, quite rapidly. For the Delfi-C3 a lifetime of about one year is
John Marranca, Jr
PBX Technician/Shop Steward CWA Local 1122
BN Systems, Inc
Orchard Park, NY
Delfi 3C will be as tempoary as anything at 700km. I think the orbit decay
is several decades.
The problem as always will be radiation and power supply. Hopefully not
carring batteries will mean a long, but daylight only, life for the delfi
In a message dated 30/12/2007 00:48:29 GMT Standard Time, KB2HSH(a)amsat.org
Think ANDE-1...or the upcoming Delfi-3
which is another temporary satellite.
Anyway...what if partnerships with any of the Military Academies...or
Universities with programs similar to this (such as Kentucky State's KySat
Project) could be worked out? AMSAT ideas or concepts and build team
partnerships with students, etc...but with a chance for greater funding
available for a potential launch?
Food for thought....