BLT-36 KT5TK-5 Foil Floater Just Launched

We’ve just launched a lightweight foil floater. It’s the lightest one I’ve ever built.Total payload weight including AAA battery and 2m dipole antenna weights 15 grams. Balloon is a single Qualatex 91 cm. Free lift is about 2.5 gram. It’s a Pecan Pico 4 tracker with frequency agile APRS. The transmit cycle has been reduced to 5 minutes to save as much power as possible. Follow KT5TK-5 on aprs.fi .

Prediction looks great! Will we make it to Europe? We’ll see…

Update:

BLT-36 has reached the Atlantic! We have crossed Texas, Louisiana, Mississippi, Alabama, Georgia, North Carolina and Virginia. 108 mph in direction Azores! The tracker will switch over to the European APRS frequency (144.800 MHz) at a longitude  of 25 degrees West. Therefore if you’re receiving at the Azores, you might start listening on 144.390 MHz APRS first.

BLT36_reached_Atlantic

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16 thoughts on “BLT-36 KT5TK-5 Foil Floater Just Launched

  1. Hi everybody…. We are waiting this floater in Spain. At south ( In Malaga privince ) Salva EA7FQB is ready, and in North West ( A Corunna province) all members of Fene Radio club waiting for this..

  2. Copied packet via ISS
    C0 00 82 A0 8A 86 82 9C 60 82 A0 8A 86 82 9C 68 82 A0 8A 86 82 9C 63 3 F0 2F 30 30 34 36 31 39 68 33 30 33 33 2E 32 34 4E 2F 30 39 31 32 35 2E 31 36 57 4F 31 30 32 2F 30 33 34 2F 41 3D 31 30 34 36 37 39 20 20 34 2E 32 56 20 2D 33 34 43 20 31 37 39 31 50 61 20 53 41 54 53 30 37 20 68 74 74 70 3A 2F 2F 74 6B 72 61 68 6E 2E 6E 65 74 C0

  3. It’s a position packet from a high altitude balloon at 104679 feet above sea level. Battery has 4,2 Volt, temperature below -32 degrees Celsius and Pressure 1791 Pascals. The GPS is receiving 7 Satellites. However the path is strange. Is it possible that you have received this packet directly from the balloon? The tracker tries to switch to ARISS frequency when the balloon and ISS paths are crossing, but with 100mW tx power the chances are low that it’ll make it through ISS. Especially when it’s among all the other US stations.

  4. It does look like it hasn’t been repeated. I received it at 18:48 CST. I could have been a coincidence that the ISS was passing. We were trying to communicate with the ISS when the packet came through. Does it give you GPS coordinates also?

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