VK Logger Ham Radio Forum Archive

Here is a photo of the tracker: http://picospace.net/wp-content/uploads/2019/12/NewImage-6.png Some stats from the trip: - Max uplink range (balloon to gateway) : 380km at 9400m altitude, beyond 5 degree horizon - Minimal RSSI = -137 - Max downlink range (gateway to balloon): 240km outside of Sydney...

Thanks Mark, that would really help with de-cluttering the map.
Regards,
Andy

Hi Mark, Long time no hear! The tracker is a custom board with an ARM 0+ and SX1276, powered by one AAA lithium. Weight is around 10g. Antenna is a 915Mhz dipole. From the initial test data, we can probably use TTN SF8 for default. At that rate and small payloads the tracker should be able to remain...

Hi all, FYI, A balloon is in the air to test coverage of LoraWAN in The Things Network https://tracker.habhub.org/#!mt=roadmap&mz=10&qm=1_day&f=PS-73&q=PS-73 Party balloon, 5mW TX on Australian LoraWAN bandplan (915Mhz), using 1 AAA battery. Path prediction: http://predict.habhub.org...

It turned out to be a straight forward flight, they started around 8:20am and recovered the payload at around 10:30am at Enfield, just missed the Enfield State Park! Actual max altitude was 28624m. APRS tracking was good all the way down to 1559m, and they could lock in the Olivia UHF signal on the ...

Hi all, Mount Lilydale Mercy College will be launching a balloon from Lake Bolac Victoria at 8am 17/10/19, with science payloads from students. This is their first launch, so it would be great if we can assist them with the tracking. They will be using APRS trackers on 145.175 (VK3HAX and VK3HAX-15)...

Hi all, PS-68 is planned for release at 7am Sat 27 Aug 2016 AEST. Solar powered party balloon, 10mW TX APRS on 145.175Mhz Olivia 8/250 with RSID on 434.649Mhz USB (Dial frequency) Tracking as PS-68 on SNUS https://tracker.habhub.org/#!mt=roadmap&mz=8&qm=1_day&f=PS-68 and VK3YT-11 on APRS...

Hi all, PS-67 is in the air, chasing FEDOR the balloonist (http://konyukhov.ru/en/news.html) Solar powered party balloon, 25mW TX TX WSPR, JT9 on 30m only Dial frequency 10.138700Mhz (standard WSPR dial frequency) for WSPR, JT9. JT9 is at 1650Hz See HF decoding info at http://picospace.net/?cat=34 T...

VK1KW wrote:http://www.hydrobead.com/
maybe other coatings too
possible option - not affiliated here.

Thanks Rob, that looks interesting but is probably a bit on the heavy side:
Net weight 11 oz (312 g), covers 20 sq. ft. (1.9 sq. meters)

Andy

VK2IUW wrote:Congratulations Andy on your WIA technical Award.

Well deserved.

Hilary
VK2IUW

Hi Hilary,
I have no idea what that is about
Regards,
Andy

Thank you all for tracking,

PS-64 hit a weather front this morning and went down.
PS-65 is in the air, using the same SNUS call sign, and VK9WI as WSPR call sign.

Andy

Hi all, FYI, PS-65 is in the air, as part of the WIA AGM activities. Solar powered custom balloon, 25mW TX TX WSPR, JT9 on 30m only Dial frequency 10.138700Mhz (standard WSPR dial frequency) for WSPR, JT9. JT9 is at 1850Hz See HF decoding info at http://picospace.net/?cat=34 Tracking as VK9WI on SNU...

Hi all, FYI, PS-64 is in the air, as part of the WIA AGM activities Solar powered custom balloon, 25mW TX TX WSPR, JT9 on 30m only Dial frequency 10.138700Mhz (standard WSPR dial frequency) for WSPR, JT9. JT9 is at 1650Hz See HF decoding info at http://picospace.net/?cat=34 Tracking as VK9WI on SNUS...

Yes the battery would be the first to go, but we have seen the case where the payload transmits but the cold temp causes too much frequency drift to be decoded.
The higher altitude hopefully will keep the balloon out of most bad weather!
Andy


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Hi all, FYI, PS-63 is in the air. Solar powered custom balloon, 25mW TX TX WSPR, JT9 on 30m only Dial frequency 10.138700Mhz (standard WSPR dial frequency) for WSPR, JT9. JT9 is at 1650Hz See HF decoding info at http://picospace.net/?cat=34 Tracking as PS-63 on SNUS http://picospace.net/tracker/new ...

Hi all,
Looks like PS-62 went MIA after two days in the air.
Thanks for tracking, and see you at the next flight
Andy

Thanks guys, balloon in the air
Andy

Hi all, FYI, PS-62 is planned to be launched this Sun 20th March 2016, around 7am. Solar powered party balloon, 25mW TX TX WSPR, JT9 on 30m only Dial frequency 10.138700Mhz (standard WSPR dial frequency) for WSPR, JT9. JT9 is at 1650Hz See HF decoding info at http://picospace.net/?cat=34 Tracking as...

VK3NFI wrote:Andy have got a good track on 61 at moment Ill leave it running most of the day for you, are you guys in the live chat if so what is it I cant find the link now..

Thanks Dean,

I will be in and out of the IRC chat at http://webchat.freenode.net/?channels=picospace

Regards,
Andy

Looking ok now David, you are on the map!
Jason, it should be around 1000Hz for a dial frequency of 434.649Mhz

Regards
Andy