Difference between revisions of "HAB Tracker Station"

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Project page for the high altitude balloon tracking/listening station we are setting up in the space.
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Project page for the high altitude balloon tracking/listening station have set up in the space.
  
 
== Overview ==
 
== Overview ==
[[File:RevSpaceHABtracker.png|1000px]]
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[[File:RevSpaceHABtracker.png|800px]]
  
 
== Done ==
 
== Done ==
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* "ezcap USB 2.0 DVB-T/DAB/FM" dongle (RTL2838U, Fitipower FC0013 tuner)
 
* "ezcap USB 2.0 DVB-T/DAB/FM" dongle (RTL2838U, Fitipower FC0013 tuner)
 
* VK5QI HABamp
 
* VK5QI HABamp
* Raspberry Pi (+ power supply)
 
* Test payload, RFM22b sending RTTY strings on 434.250MHz. Code here: https://github.com/costyn/rfmtest/blob/master/rfmtest.pde
 
 
* Antenna: Diamond X-50N
 
* Antenna: Diamond X-50N
  
 
=== Software ===
 
=== Software ===
* rtl_tcp on RasPi over the network --> '''works!''' (1024000 samples/second seems to go fine when both are on a wired connection)
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* Windows XP, hostname "habtracker", IP 10.42.44.94 (MAC 00:21:70:02:62:0f)
* VNC performance with gqrx and dl-fldigi --> '''usable with JPEG compression and 8 bits of color''' (why not SPICE? http://www.spice-space.org/)
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** Start the machine with a magic WoL packet: 'wakeonlan -i 10.42.255.255 00:21:70:02:62:0f; ping habtracker'
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** VNC: geheim ;-)
  
 
== Todo ==
 
== Todo ==
 
=== Hardware ===
 
=== Hardware ===
* Assembly the Diamond X-50N.
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* Earth the antenna, to prevent static buildup
* Get a nice case that will fit the Raspi, ezcap dongle, HABamp and the "SMA <--> N-type" connector.
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* Moar ferrite
* Get some sort of antenna mount something like
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* Metal box for some shielding (DIY or be lazy and get something like [http://dutchrfshop.nl/behuizingen.html] or [http://www.velleman.eu/products/list/?id=344206])
<center>http://i.imgur.com/X3xsd.jpg</center>
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=== Software ===
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== Pics ==
* Setting up a virtual machine with gqrx and dl-fldigi.
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=== Derping around with hardware ===
** If we are going to use SPICE we could setup a whole new machine. Or at least some sort of Fedora desktop version.
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<gallery>
 
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File:Finaltestonpi.png|One of the first payload tests
=== Shit just got real ===
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File:IMAG0857.jpg
<pre><foobar> Maxell: had xander gevraagd over die plaatsing van een antenne, is geen probleem, mits netjes aangelegd/afgewerkt
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File:IMAG0860.jpg
<foobar> je kan eventueel bij de zonne-collector naar binnen, daar is al een kabelgoot o.i.d.
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File:IMAG0864.jpg|The antenna: 'Diamond X-50N'
<foobar> komt uit in de wc's boven, kan dan door naar de meterkast, en vanaf daar zijn al ducts naar beneden/kelder</pre>
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</gallery>
 
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=== '''OMG! HUGE SUCCESS!''' ===
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The old geyser's ventilation pipe is still penetrating the roof. Cat5e UTP and 230v at your fingertips.
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It looks like we don't need to put our setup on the roof anymore, '''just the antenna'''! The enclosure we are going to use doesn't need to battle mother nature anymore, easy replacement if something breaks, etc, etc.
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== Grounding ==
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=== Deel 1 ===
<pre>
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<gallery>
<costyn> so guys, how do you ground your antenna's? what the consensus on lightning arrestors?
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File:Zonnecollector Frame 1.jpg|Coax will leave/enter the building trough the little chimney
<fsphil> there's so little lightning here I don't bother
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File:UH4jTew.jpg|The ideal antenna mounting spot; the old zonnecollector
<costyn> hmm
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File:4vLbEty.jpg|Enclosure almost ready to rock
<costyn> we're going to place an antenna on the roof of our hackerspace, but it's not our building and we'll have to convince the owners that it's safe
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File:N2wnt9R.jpg|The magic pipe
<SpeedEvil> you need to ground to a separate rod, with a straight cable to it
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File:8CEENu3.jpg|Almost the same as having the Raspi on the roof
<SpeedEvil> thick insulated cable
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File:Sdtd8bY.jpg|Power and network connected
<costyn> define thick?
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File:LZVCxte.jpg
<gonzo_> you are only going to be able to disipate static with earthing. very little you can do against a direct strike
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File:0r5ffXS.jpg|Not sure what happened with the other hole there
<gonzo_> most lightening arrestors are really just spark gap's, that allow some high voltage coming down the centre of the coax, to jump to the outer.
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File:YRv3kUe.jpg|The smell was't that bad
<gonzo_> your typical short colinear is possibly going to be DC short between the centre and braid anyway. (You can test with a DVM)
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File:Eqagifp.jpg|It pings!
<gonzo_> long colinears are not much of an advantage for HAB use, so I assume it will be a short one. So will not extend much above the existing roof profile? So will not be any greater risk of lightening than anything else
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File:WNtwDZG.jpg|The open pigtail even picks up our payload...
<costyn> gonzo_: it'll be a short one yea, Diamond X-50 likely
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</gallery>
<costyn> gonzo_: and it'll raise some above the roof line, but it's not a high building (2 stories) and there's higher buildings and trees around
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<gonzo_> not siure of your mounting options, but if mounted to existing metalwork up there, like handrains etc, it will be earthed to the building anyway (or at least the owners metalwork)
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<costyn> it's basically a flat roof with some outlets for hvac
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<costyn> so no existing metal work. we're thinking of using/making a stand with metal weighted down with tiles
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<gonzo_> then an extra ground wire would prob be worth adding. If the building or roof is metal, then that could be an option to earth to, or as SpeedEvil said, an earthing rod
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<costyn> ok. thanks for the advice. will see what we can do. not even sure if we're going to get permission to route the coax on the outside of the building, so we'll see
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</pre>
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=== Pics ===
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=== Deel 2 ===
[[File:Finaltestonpi.png|400px]]
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<gallery>
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File:YJkKJx3.png|Without the HABamp the USB cable is a bit short
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File:MQWEHh1.png|Coax entering
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File:QvAsY3B.png|oh hi
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File:RzGxD7t.png|Look at the beautiful stainless steel bolts!
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File:LUsffcP.png|Oooooh!
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File:4mcwHHD.png
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File:XOABzL1.png
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File:SaZOJpU.png|The beauty
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</gallery>

Revision as of 21:55, 12 May 2013

Project HAB Tracker Station
Status In progress
Contact User:Costyn_van_Dongen, Maxell, Bertrik_Sikken
Last Update 2013-05-12

Project page for the high altitude balloon tracking/listening station have set up in the space.

Overview

800px

Done

Hardware

  • "ezcap USB 2.0 DVB-T/DAB/FM" dongle (RTL2838U, Fitipower FC0013 tuner)
  • VK5QI HABamp
  • Antenna: Diamond X-50N

Software

  • Windows XP, hostname "habtracker", IP 10.42.44.94 (MAC 00:21:70:02:62:0f)
    • Start the machine with a magic WoL packet: 'wakeonlan -i 10.42.255.255 00:21:70:02:62:0f; ping habtracker'
    • VNC: geheim ;-)

Todo

Hardware

  • Earth the antenna, to prevent static buildup
  • Moar ferrite
  • Metal box for some shielding (DIY or be lazy and get something like [1] or [2])

Pics

Derping around with hardware

Deel 1

Deel 2