I have been informed:

The trans-atlantic balloon attempt, PBH-15, has been postponed until next week due to unfavorable flight predictions and some last minute testing issues.

They will now be attempting to launch PBH-15 sometime next week (4/27-4/29). Latest info can always be found on Twitter (@PBH5) or by contacting triebwasser@gmail.com

Thanks for the help and hope to hear from you next week.

PBH5 Team

---------- Forwarded message ---------- From: Bob Bruninga bruninga@usna.edu Date: Tue, Apr 19, 2011 at 4:22 PM Subject: Balloon across Atlantic 21 April? To: Amsat amsat-bb@amsat.org, TAPR APRS Mailing List aprssig@tapr.org Cc: Tom Triebwasser triebwasser@gmail.com, Bob Bruninga bruninga@usna.edu

KC2TUA announces: Balloon attempt across the Atlantic. 21 April 2011

Hams in the USA and worldwide are needed to listen on 7.1023 and 10.1466 MHz and to send readings of the balloon's progress to PBH15.data@gmail.com. More information about the program, including the latest projected flight path, can be found at http://www.projectbluehorizon.com/ https://twitter.com/PBH5.

It also has an APRS GPS tracker on 144.39 with the callsign KC2ZJH and will launch from Oswego, NY around midnight Thursday. Thanks in advance for your help!

The HF downlink exact frequency will vary 10 Hz or so with temperature. Accurate recording of frequency will be useful.

73, -Tom Triebwasser PBH Alumnus '09 KC2TUA

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The Project Blue Horizon Increment 5 (PBH V) team has finalized a launch window for the third and final flight of Increment 5; launch of PBH-15 is tentatively planned for 4/21/11 – 4/22/11. The team will be rolling out GO/ NO-GO communications to all parties to provide adequate time for interested individuals to plan accordingly for observing the launch or tracking and following the mission progress.

The PBH-15 mission will be the Increment 5 teams attempt at breaking the current ARHAB distance (3,361.81 miles) and duration (49 hours, 45 minutes) records. It will include integration of an altitude control mechanism for reducing air vehicle weight during flight to sustain float and 30m HF communications via an Enhanced Morse Decoder provided by Dylan Thorner of Enhanced Solutions. PBH-15 will be lifted with a 54,000 cubic foot Zero-pressure envelope and is projected to float for long durations between 85,000-110,000.

The current target for executing launch of PBH-15 is between 11:00PM – 12:00AM on Thursday (4/21)/Friday (4/22), weather and approval permitting.

At conclusion of Thursday’s Flight Readiness Review (2PM - 3PM), the team will provide updated GO/ NO-GO information.

During the PBH-15 mission, the Twitter feed will be updated in 30 minute increments at: http://twitter.com/PBH5

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For those interested in tracking the Mission Payload, the following band plan and call signs will be used for PBH-15:

Function Frequency Required HAM Level

Payload Call Sign Primary Voice / Mission Communication 147.500MHz Technician

Mission Payload HF (40m) N2XE Secondary Voice / Mission Communication Owego Repeater (Duplex) 146.760MHz Technician

Mission Payload HF (30m) N2XE

Mission Payload APRS KC2ZJH APRS 144.390MHz Technician

40m HF (Morse Code) See attached Technician

30m HF (Morse Code) See attached General

Users can input data received from the Mission Payload via the “User Input” tab at http://www.projectbluehorizon.com/.

Points received from the PBH-15 payload over HF can also be submitted to: PBH15.data@gmail.com

Thanks,

Matthew T. Lewis