PS-55 PICO balloon HF JT9 WSPR

Discussion about orbiting satellite, and balloon launches
Post Reply
VK3YT
Forum Diehard
Posts: 367
Joined: Mon Jan 20, 2014 8:43 am

PS-55 PICO balloon HF JT9 WSPR

Post by VK3YT » Sat Oct 10, 2015 7:11 am

Hi all,

FYI,

PS-55 is in the air.

Solar powered party balloon, 25mW TX
TX WSPR, JT9 on 30m and 20m

Dial frequency 10.138700Mhz and 14.095600Mhz (standard WSPR dial frequencies) for WSPR, JT9.
JT9 is at 1000Hz

See HF decoding info at http://picospace.net/?cat=34

Tracking as PS-55 on SNUS http://picospace.net/tracker/new
WSPR call sign is VK3YT http://wsprnet.org/olddb?findcall=vk3yt

TX scheduling
Minute - Band - Mode - Condition
:00 - 30m - 2 mins WSPR then two x 1 min JT9 - mandatory
:10 - 20m - 2 mins WSPR then two x 1 min JT9 - if batt full
:20 - 30m - 2 mins WSPR then two x 1 min JT9 - if batt full
:30 - 20m - 2 mins WSPR then two x 1 min JT9 - mandatory
:40 - 30m - 2 mins WSPR then two x 1 min JT9 - if batt full
:50 - 20m - 2 mins WSPR then two x 1 min JT9 - if batt full

Assistance with tracking is appreciated.

Regards,
Andy
VK3YT

User avatar
VK2KRR
Forum Diehard
Posts: 1602
Joined: Fri Apr 08, 2011 6:16 pm
Location: The Rock Hill, Sthrn NSW.
Contact:

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK2KRR » Sat Oct 10, 2015 10:26 am

Cool, Im assisting on the WSPR front, just using my 160m dipole. I'd usually be on 10m during the day, but its dead atm so thought I may as well see if I can hear the balloon.

I'd be interested to learn how your setting the WSPR to auto update the grid square from the GPS as I would love to set up a mobile RX station on 2m WSPR in the car.
Leigh VK2KRR
The Rock Hill, NSW

Station monitoring Tropospheric & Ionospheric propagation 24 hours a day

VK2PR
Frequent Poster
Posts: 114
Joined: Mon Dec 26, 2011 7:36 pm
Location: Campbelltown, NSW, Australia
Contact:

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK2PR » Sat Oct 10, 2015 11:34 am

What's the predicted path for this one, Andy?
Peter
VK2PR

VK3YT
Forum Diehard
Posts: 367
Joined: Mon Jan 20, 2014 8:43 am

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK3YT » Sat Oct 10, 2015 10:32 pm

Thanks guys,
The predicted path is
Image
Andy

VK4ALF
Forum Novice
Posts: 47
Joined: Tue Jun 30, 2015 11:30 pm

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK4ALF » Sat Oct 10, 2015 11:06 pm

Big Signals this afternoon on 30 m . Propagation has not done us any flavors tonight though
Well done Andy ..
Len Falknau VK4ALF

Facebook High Altitude Balloon Australia Discussion Page
https://www.facebook.com/groups/1649591138615809/

VK3YT
Forum Diehard
Posts: 367
Joined: Mon Jan 20, 2014 8:43 am

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK3YT » Sun Oct 11, 2015 7:54 am

VK2KRR wrote:Cool, Im assisting on the WSPR front, just using my 160m dipole. I'd usually be on 10m during the day, but its dead atm so thought I may as well see if I can hear the balloon.

I'd be interested to learn how your setting the WSPR to auto update the grid square from the GPS as I would love to set up a mobile RX station on 2m WSPR in the car.
Hi Leigh,

Most of the WSPR decoding softwares only take in static grid square.
The easiest way I can see is to use a Raspberry Pi to decode WSPR, and use a script to get the GPS coordinates and update the WSPR grid square.
Adrian VK4RV has a nice head-less Pi setup for both WSPR and JT9 decoding, and it will take minimal effort to update the grid square dynamically.

The Pi can also automatically change the frequency of the HF rig via CAT, move the rotator to point antenna, towards the balloon.

Let us know if you decide to go down the Pi path, the setup is easily re-usesable.

Andy

VK4ALF
Forum Novice
Posts: 47
Joined: Tue Jun 30, 2015 11:30 pm

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK4ALF » Mon Oct 12, 2015 10:14 pm

Last spot i can see was at 2015-10-12 09:50 utc
The balloon was sitting at high 8900 m but the last spot was at 1792 m so i got a bad feeling that it may have gone for a swim
Looking at the weather map there are some stong winds in the pacific

Image[/URL]
Len Falknau VK4ALF

Facebook High Altitude Balloon Australia Discussion Page
https://www.facebook.com/groups/1649591138615809/

User avatar
ZL1RS
Forum Diehard
Posts: 493
Joined: Fri Feb 08, 2008 10:29 pm
Location: Bay of Islands
Contact:

Re: PS-55 PICO balloon HF JT9 WSPR

Post by ZL1RS » Tue Oct 13, 2015 3:40 pm

Yes Len, I saw the first JT9 transmission in a following time slot fizzle from a good signal to NIL part way through ... no doubt it drowned at that time.

PS-55 was located pretty much at the right hand edge of that weather map you posted, at about 20% up from the bottom ... right in that nasty patch of weather and a very strong NW wind.

73,
Bob, ZL1RS in the Bay of Islands at RF64vs
http://www.qsl.net/zl1rs

VK1KW
Frequent Poster
Posts: 63
Joined: Fri Aug 31, 2012 9:59 am
Location: Canberra QF44mt

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK1KW » Tue Oct 13, 2015 5:53 pm

Hello Andy,
Wonder if you have had a look at what happens when one is deliberately dropped in the water.
Is the surface tension so great that it would never make it out again and is there anything that can be done to facilitate it getting back up.
Maybe polystyrene floaties stuck to the appropriate bits or a special coating on all surfaces? Hi!
Regards
Rob
VK1KW

VK3YT
Forum Diehard
Posts: 367
Joined: Mon Jan 20, 2014 8:43 am

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK3YT » Tue Oct 13, 2015 9:15 pm

VK1KW wrote:Hello Andy,
Wonder if you have had a look at what happens when one is deliberately dropped in the water.
Is the surface tension so great that it would never make it out again and is there anything that can be done to facilitate it getting back up.
Maybe polystyrene floaties stuck to the appropriate bits or a special coating on all surfaces? Hi!
Hi Rob,

The lost lift because of accumulated water droplets is the killer, and it would be too hard to shake them of on a water landing.
Even if the balloon becomes air-borne again, it will just be bouncing on top of the water.

Regards,
Andy

VK1KW
Frequent Poster
Posts: 63
Joined: Fri Aug 31, 2012 9:59 am
Location: Canberra QF44mt

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK1KW » Tue Oct 13, 2015 9:53 pm

I noticed on the TV the other day a new water repellent spray - I think this is the one?
http://www.businessinsider.com.au/this- ... een-2013-7
Regards
Rob
VK1KW

VK1KW
Frequent Poster
Posts: 63
Joined: Fri Aug 31, 2012 9:59 am
Location: Canberra QF44mt

Re: PS-55 PICO balloon HF JT9 WSPR

Post by VK1KW » Wed Oct 14, 2015 6:44 am

more
http://ultraeverdryonline.com.au/
this is awesome stuff
Regards
Rob
VK1KW

Post Reply