Blogs

New Service

Bit of airplane spotting?

Software Defined Radio - thank-you!

ross@amd:~$ rtl_adsb | socat -u - TCP-LISTEN:30003
Found 1 device(s):
  0:  Realtek, RTL2838UHIDIR, SN: 00000001
Using device 0: Terratec T Stick PLUS
Found Elonics E4000 tuner
Tuner gain set to automatic.
Tuned to 1090000000 Hz.
Sampling at 2000000 Hz.
Exact sample rate is: 2000000.052982 Hz

 

I then use VirtualRadarServer to serve up the web page.. nice - enjoy!

Air-Stream-Betsuin

Ok, got the RB433AH back on the roof wth 2 x wifi nic - thanks heaps Tanuki!

Quagga/BGP conf not yet worked out but no doubt it will be soon, in the mean time - what can be "seen" from my Superpass Omini up there...

NOAA APT (Weather Satellite Pictures)

Not wifi but hell, it's radio!

NOAA flys low Earth orbit satellites and have been doing so for a while now, not many alive these days broadcasting somewhat easy to receive APT (Automated Picture Transfer) on 137MHz - NOAA 15, 18 & 19.

Basically, it is a FAX type transmission. The sensor points down and broadcasts FAX lines continuously as it flys over-head.

WXtoImg has a free version that works just fine and is pretty feature full, MacOSX, Win and 'nix - nice.

Teringie Splat! LOS

Potential LOS from Teringie Ridgeland Dv as calculated by Splat!   --  Oh yeah it's a nice view from up there...

Full size: http://www.air-stream.org/files/Teringie_ridgeland_dv_splat_LOS.jpg

No Roof Top

Came home after work to find my wifi PC box spontaneously rebooted and the RB 433AH at the mast head not pinging - a power cycle hasn't fixed that - gads!

... more to come ...

Test

Test blog entry on the new website.

Test

Test blog entry :)

Redwood Park Build

This is a little overdue :).

Following from http://seven.air-stream.org/frequently-asked-questions-faq/how-much-does-it-cost-connect i thought i would put some thoughts down about how i got connected.

I knew about Air-stream and the general philosophy but not enough about wireless to know what to do.

I started by paying my membership $50 - http://seven.air-stream.org/join

Then i jumped on IRC and started talking to the people there. I found from IRC that they are more than happy to come out and do a stumble to see what i could potentially connect to.

Improving the link by using a dish

Last Wednesday (1st Aug, 2012), Nekron and I upgraded my connection to Ingle Farm by swapping out the 8dB omni for a 19dB dish. This is a fairly mundane task and usually doesn't need blogging but the advantage and benefit of using a dish, even in a dish-omni scenario, really does improve the quality of the connection significantly.

Skye Link

Well, what a difference a coax cable (connector actually) can make.
Other than a couple of very short drop outs I have enjoyed excellent connectivity:

jun/05 23:17:19 wireless,info 00:15:6D:65:F9:27@wlan1 established connection on 2427, SSID Air-Stream-Skye
jun/05 23:17:22 route,bgp,info Connection opened by remote host
jun/05 23:17:22 route,bgp,info RemoteAddress=10.122.128.1
jun/06 00:39:18 system,info,account user admin logged out from 10.122.128.66 via winbox
jun/06 00:42:20 system,info,account user admin logged out from 10.122.128.66 via ssh
jun/07 03:42:30 wireless,info 00:15:6D:65:F9:27@wlan1: lost connection, no beacons received
jun/07 03:42:32 wireless,info 00:15:6D:65:F9:27@wlan1 established connection on 2427, SSID Air-Stream-Skye

Pages

Subscribe to RSS - blogs