PS-48 PICO balloon HF payload WSPR JT9

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

PS-48 PICO balloon HF payload WSPR JT9

Post by VK3YT » Sat Aug 08, 2015 12:18 pm

Hi all,

FYI,

PS-48 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-48 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

Prediction:
Image

Assistance with tracking is appreciated.
Regards,
Andy

VK1JA
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Posts: 349
Joined: Tue Sep 14, 2010 9:50 pm

Re: PS-48 PICO balloon HF payload WSPR JT9

Post by VK1JA » Sat Aug 08, 2015 4:37 pm

Looking good Andy, it just passed us by about 2km - doing 255km/h !!!

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

Re: PS-48 PICO balloon HF payload WSPR JT9

Post by VK4ALF » Sun Aug 09, 2015 10:54 am

Last time I saw it beacon was around midnight last night Battery volts were very low
Other stations saw it at 3 am .

Not sure what happened but I guessing a Solar charging issue

Hope it comes back up
Len VK4ALF
Len Falknau VK4ALF

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

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

Re: PS-48 PICO balloon HF payload WSPR JT9

Post by VK3YT » Sat Aug 15, 2015 8:22 am

Looks like PS-48 is still in the air

2015-08-14 22:00 VK3YT 10.140111 -10 1 FF98 +30 1.000 PY2GN GG56tv 1561 970
2015-08-14 17:00 VK3YT 10.140112 -15 -1 FG73 +33 1.995 PY2GN GG56tv 1723 1071

The power level for PS-48 is used to encode altitude in increments of 1000m:
0dbm => 0-1000m
3dbm => 1000m
7dbm => 2000m
10dbm => 3000m
13dbm => 4000m
17dbm => 5000m
20dbm => 6000m
23dbm => 7000m
27dbm => 8000m
30dbm => 9000m
33dbm => 10000m
37dbm => 11000m

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VK3DXE
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Joined: Wed Nov 24, 2010 9:35 pm

Re: PS-48 PICO balloon HF payload WSPR JT9

Post by VK3DXE » Sat Aug 15, 2015 12:05 pm

VK3YT wrote:Looks like PS-48 is still in the air

2015-08-14 22:00 VK3YT 10.140111 -10 1 FF98 +30 1.000 PY2GN GG56tv 1561 970
2015-08-14 17:00 VK3YT 10.140112 -15 -1 FG73 +33 1.995 PY2GN GG56tv 1723 1071

The power level for PS-48 is used to encode altitude in increments of 1000m:
0dbm => 0-1000m
3dbm => 1000m
7dbm => 2000m
10dbm => 3000m
13dbm => 4000m
17dbm => 5000m
20dbm => 6000m
23dbm => 7000m
27dbm => 8000m
30dbm => 9000m
33dbm => 10000m
37dbm => 11000m
Wow, excellent Andy. :mrgreen:
Alan VK3DXE
QF21nv

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