PS-44 PICO balloon HF payload WSPR JT9

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

PS-44 PICO balloon HF payload WSPR JT9

Post by VK3YT » Sun May 17, 2015 8:01 am

Hi all,

FYI,

PS-44 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 1800Hz

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

Tracking as PS-44 on SNUS http://picospace.net/tracker/new
WSPR call sign is VK3YT http://wsprnet.org/olddb?findcall=vk3yt

TX scheduling (thanks Bob!)
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

Prediction:
Image

Regards,
Andy
Last edited by VK3YT on Sun May 17, 2015 8:29 am, edited 1 time in total.

User avatar
VK5RM
Forum Novice
Posts: 34
Joined: Sat Feb 02, 2013 9:00 am

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK5RM » Sun May 17, 2015 8:13 am

Thanks Andy will have a look for it
Should be good for the South Australians

Phil VK5RM

VK2XTC
Frequent Poster
Posts: 107
Joined: Sun Mar 08, 2015 3:47 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK2XTC » Sun May 17, 2015 9:59 am

At last , my first decode.. It's taken me weeks to get this far, order kit from the US, making antennas

Very happy.
Screen Shot 2015-05-17 at 9.54.32 am.png
Screen Shot 2015-05-17 at 9.54.48 am.png

Brian

VK2XTC QF56

VK3KCX
Frequent Poster
Posts: 108
Joined: Wed Jun 27, 2012 6:08 am

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK3KCX » Sun May 17, 2015 11:07 am

Good work Brian, are you attempting to decode the JT9 also?

- David - VK3KCX

VK2XTC
Frequent Poster
Posts: 107
Joined: Sun Mar 08, 2015 3:47 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK2XTC » Sun May 17, 2015 11:16 am

David,

Yes but as you can see from the receive strength on the WSPR its down at the limit of my equipment. (-31dB)

Got part of a trace of JT9 on the half hour but it was probably the antenna rotating in the wind. It didn't decode.

Have chased it down to 10Mhz also but get better signal on 20M currently.

What a great way to spend a Sunday Morning ... !!



Brian

User avatar
VK3DXE
Forum Diehard
Posts: 584
Joined: Wed Nov 24, 2010 9:35 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK3DXE » Sun May 17, 2015 11:20 am

Hi Andy,

Thanks again for the new balloon. The kids were excited that it flew almost right over us on ascent this morning.

Any reason for the 1800Hz telemetry this time? I know there's a setting to get WSJT-x to decode it up that far(??), but its a little early on a Sunday for my brain yet. I'm getting multiple decodes from soundcard artefacts at the moment as it so strong, but will see if I have it configured correctly once it moves away a little and becomes weaker.

...And great work Brian. Just keep at it and you'll get there in time. Try 30m a little later on, as that band tends to favour the relatively shorter distance during the day.
Alan VK3DXE
QF21nv

VK2XTC
Frequent Poster
Posts: 107
Joined: Sun Mar 08, 2015 3:47 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK2XTC » Sun May 17, 2015 11:44 am

Does anyone know about the balloon launched from VK2 this morning.

It seems to be moving.

Cannot find any information


Brian

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

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK3YT » Sun May 17, 2015 1:58 pm

Looking good guys, and thanks for tracking!

1800Hz is used to assist our Europe friends to avoid their busy 1000-1200Hz segment.
WSJT-X should just decode without any changes.

Brian, did you select "Upload" on WSPR-X? looks like your spots are not uploaded.

Regards,
Andy

VK2XTC
Frequent Poster
Posts: 107
Joined: Sun Mar 08, 2015 3:47 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK2XTC » Sun May 17, 2015 5:37 pm

Andy,

Based on the screen shot attached ,, sorry no, it was turned off.

I run both WSPR-X and WSJT-X at the same time to the one radio so don't always turn it on.

(or forget to) which was the case here. }:[

But I am thrilled at getting a decode at -31dB , that's properly the weakest signal for me so far... :D



Brian

VK2XTC
Frequent Poster
Posts: 107
Joined: Sun Mar 08, 2015 3:47 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK2XTC » Sun May 17, 2015 6:58 pm

Andy,

I turned it on later and it updated the database.

Database shows the following.

2015-05-16 23:50 VK3YT 14.097192 -31 0 QF21 +10 0.010 VK2XTC QF56oe 767 477


Brian

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

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK3YT » Sun May 17, 2015 7:56 pm

Hi all,

Unfortunately PS-44 developed a slow leak during the day, and just descended into Bass Strait at 7:30pm AEST.

It was a short trip, hope it was a bit of fun on a Sunday!

Welcome to Brian for first time tracking a PS balloon!

Thanks for tracking, and see you at the next flight.

Andy

VK5EI
Frequent Poster
Posts: 118
Joined: Sun Sep 02, 2012 8:55 pm

Re: PS-44 PICO balloon HF payload WSPR JT9

Post by VK5EI » Sun May 17, 2015 8:28 pm

Thanks Andy, enjoyed tracking PS-44 today. Managed to check how it was progressing in between all the domestic duties that must be done :D

Well done :clap: :clap:

Post Reply