Besides the occasional MDS dishes, is there a source now of larger commercial 2.4 GHz wire or mesh dishes?
We want to outfit a van with a 4' dish for Balloon Tracking live downlink video and not have it blow off the roof at 70 MPH.
I'm considering changing over many of our student projects to high altitude "cubesats" that can be completed in one semester and actually LAUNCHED (by balloons), as opposed to the occasional once every 3 or 4 year satellite missions which spend more time in bureaucracy than engineering for the students. Given that we only have the students for one semester.
Bob, Wb4APR
I believe that would require a (ra)dome to make it aerodynamically acceptable. I would also believe it would require azimuth and elevation controls as well since the vehicle and object will be moving.
73,
Jeff WB3JFS
----- Original Message ----- From: "Bob Bruninga" [email protected] To: [email protected] Sent: Thursday, October 27, 2011 2:35 PM Subject: [amsat-bb] 70 MPH S-band dish
Besides the occasional MDS dishes, is there a source now of larger commercial 2.4 GHz wire or mesh dishes?
We want to outfit a van with a 4' dish for Balloon Tracking live downlink video and not have it blow off the roof at 70 MPH.
I'm considering changing over many of our student projects to high altitude "cubesats" that can be completed in one semester and actually LAUNCHED (by balloons), as opposed to the occasional once every 3 or 4 year satellite missions which spend more time in bureaucracy than engineering for the students. Given that we only have the students for one semester.
Bob, Wb4APR
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Bob,
We want to outfit a van with a 4' dish for Balloon Tracking live downlink video and not have it blow off the roof at 70 MPH.
I'm considering changing over many of our student projects to high altitude "cubesats" that can be completed in one semester and actually LAUNCHED (by
Please be careful - even a wire dish generates an enormous drag at 70MPH.
Do you intend to actually use the antenna while driving, or only while parked? In either case, you would need a stabilized antenna with a radome (see the Swe-Dish SOTM), or a folding roof antenna like the Swe-Dish DA150 series (see http://www.rockwellcollins.com/sitecore/content/Data/Products/Communications... ). I don't work for Rockwell Collins / Swe-Dish or have any relationship with them.
Commercial folding antennas are just expensive, while commercial stabilized antennas are terribly expensive. But they may be worth the cost if you are saving sat launches - and besides, I am sure anyone on this list would find good uses for them :)
Miguel, EA1ICZ
participants (3)
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Bob Bruninga -
Jeff Yanko -
Miguel Barreiro