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Recap of EOSS-70/71Each flight has a page dedicated to it to cover individual idiosyncrasies. Common information for both flights found here. LAUNCH DATE: August 2, 2003 EOSS Frequencies:
CU Frequencies:
Internet Gateway Stations:For KØANI-11
For KØYUK-11
For W5VSI-11
BACKUP iGaters
EOSS wishes to express our sincere appreciation to those stations above who iGated the balloon APRS telemetry onto the internet. We are relying heavily on real time position information available on the net to allow the FAA controllers to have up to the minute location data to assist them in traffic control. The backup stations for each balloon provide excellent coverage. If you go to findu.eoss.org and enter in the callsigns of any of EOSS's APRS payload systems to retrieve the raw position data you will note that all of these stations contribute to the flow of information. And in the event of a station dropping out momentarily, the others pick up the slack quite nicely. Thanks again guys! The FAA (and EOSS) are very grateful for your assistance in this endeavor. EOSS Grid:
Suggested NØLP Grid Calculator Reference Point: Since Punkin Center is located on a predefined (scoped by trackers with GPS) latitude Longitude you might consider using that as your reference point. The lat/long is:
And that would be associated with Marty's X/Y coordinates of 25,10 as shown above Photos:
Audio:Playing these clips in sequence will essentially recreate the flight. Very minor edits have been made to clean up the beginning and ending of each clip. Each title refers to the nature of the clip, however it does not preclude other activities. For instance, If you download the "Burst of EOSS-70" you will still hear traffic referring to the ascent phase of EOSS-71".
Although I'm not heard extensively on the tape you may notice that people appear to be talking to me and then there is silence followed by more traffic directed to me. But I appear not to be responding. Well actually I was desensing the receiver during transmissions while the pre-amp was inline. When that was removed, I seem to reappear with a very weak signal. The weakness is an artifact of desense as I've never had complaints on my actual signal into Pikes Peak. The recorder used was a Sony ICD-MS515 pocket digital voice recorder. It was set in VOX mode. If someone drops the repeater and 30 minutes pass before the next transmission there will only be a second or two of silence between one transmission and the next. Keep this in mind when listening to activities. Actual elapsed time of the event was approximately 7 hours. As you can see, VOX reduced that to 3.8 hours of actual radio traffic. The Sony was plugged directly into the record out jack of an Icom IC-R8500 receiver. The antenna used was a discone. That's why the noise. With a normal receiver and antenna the PPFMA repeater is full quieting at my location. May have to change the receive setup if I keep doing these audio recordings. Mark Conner put me to shame by running one of these files through Sound Forge and filtering out the noise. So, I spent some additional time attempting to learn how to do that with Cool Edit Pro (my audio editor) and as of 8-Aug-03 these files have been considerably cleaned up. There is still noise but I was as aggressive as I could be in removing it without impacting the voice quality to any great extent. Thanks for pushing me in the right direction Mark. Recaps:
Notes:HF RadioBruce, NAØBR was our HF net control. We try and start an HF net approximately 45 minutes prior to launch on 7.228 MHz. If that frequency is busy we try 7.235 or 7.240 MHz. Conditions were very unfavorable for a 40 meter net today and so it was suspended early (14:00 UTC) because of lack of participation. |
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