Ryan Gedminas

Student, HAM Radio Operator, Diver and Mountain Biker WW6RAG

[Ryan Gedminas @ryan_gedminas]

@vk5qi That's awesome, was that transmitting aprs? When you say cut down, did you physically cut off pieces of the pcb? Did you just use some party balloons? I would love to recreate this.

[Ryan Gedminas @ryan_gedminas]

@MihajloPi @rtlsdrblog @HobbyKingLive no, there is a FrSky xm+ radio receiver

[Ryan Gedminas @ryan_gedminas]

@CikMurat rtl_tcp running via a pi wifi network

[Ryan Gedminas @ryan_gedminas]

@Paul39777506 @rtlsdrblog @HobbyKingLive Not yet but soon

[Ryan Gedminas @ryan_gedminas]

@vk5qi @rtlsdrblog @HobbyKingLive It is noticeable and will be an obstacle. I plan on locating the antenna further away, turning down the video transmitter power and adding a very narrow filter on the sdr.

[Ryan Gedminas @ryan_gedminas]

@tdsepsilon @rtlsdrblog @HobbyKingLive For starters we're going to track radiosondes that have dropped below the radio horizon of our station. Later I'll experiment with carrying a Kerberos SDR and using the mobility to triangulate targets faster.

[Ryan Gedminas @ryan_gedminas]

@evan_schoo Tracking radiosondes for starters

[Ryan Gedminas @ryan_gedminas]

@uhf_satcom not sure why but the radiosondes here in san diego often reach 34000 meters

[Ryan Gedminas @ryan_gedminas]

@SirXudes @SirWrender could be a cinewhoop would be slightly less dangerous with the ducts than a 5”

[Ryan Gedminas @ryan_gedminas]

@Varuntronics @Nooelec @rtlsdrblog yes it worked very well with no LNA for filtering everything the Discone picks up but similar results could likely be achieved with a FM stop

[Ryan Gedminas @ryan_gedminas]

@Varuntronics @rtlsdrblog @LairdConnect My station right now uses a Discone with a 400 mhz bpf. It has about 150+ miles of range when sondes are high. This is a monopole that I am testing to be mounted on a remote station up on a mountain.

[Ryan Gedminas @ryan_gedminas]

@vk5qi @Varuntronics @projecthorus Yep, thoes batteries were just for testing, the ones it flew with got pretty smashed up. Thanks for the correction Mark, it would makes a lot more sense that the little board is for pressure readings.

[Ryan Gedminas @ryan_gedminas]

@mikehojo @Nooelec unfortunately these guys are without much use since @NWSSanDiego just changed to 400 MHz RS41's. Still good for GOES though

[Ryan Gedminas @ryan_gedminas]

@mikehojo ay, pretty cool! I made one a while back, the 2.4 Ghz dish's people use for GOES works a little better than mine, you can even get a mini one that is perfect for handheld radiosonde hunts. Definitely get a SawBird GOES from @Nooelec worth every penny.

[Ryan Gedminas @ryan_gedminas]

@vk5qi @rtlsdrblog yep that's up next

[Ryan Gedminas @ryan_gedminas]

@Nooelec @rtlsdrblog Its in action right now tracking tonight's @NWSSanDiego radiosonde, seems to be working extremely well. Might've been mostly FM that was causing the problem.

[Ryan Gedminas @ryan_gedminas]

@tb69rr @rmellendick @WiFi_Village @wctf_us @EttusResearch @NuandLLC @GSGlabs @sharebrained @SignalHound @Nooelec @flightaware Many trains transmit a signal with their position along the track, using SDR you can receive and decode this position

[Ryan Gedminas @ryan_gedminas]

@TateSchrock @MuBok_ @rtlsdrblog @NWSSanDiego @Raspberry_Pi Nice setup, what antenna are you using?

[Ryan Gedminas @ryan_gedminas]

@OLHZN @NWSBUFFALO @vk5qi Got mine set up a couple days ago as @NWSSanDiego Just changed to RS41 radiosondes