This is from the AIAA reports I receive. Paul Study Finds LightSquared Would Cause Disruptions To GPS Systems. The AP (7/1, Tessler) reports, "New test results...
We are now T- 27 days till the 2011 Great plains Super Launch. The purchase of the RF beacon kits have ended. We have had a great response of 8 ordered for...
If you are planning on flying a Balloon at GPSL this year and you have not heard from Mike, W9CN please email him advanceddigital @ mac. com. Thank You Rob,...
As we finalize the activities for GPSL 2011 Tour Day a bit of advance info may be helpful to those attending. Tour Day will be Wednesday, July 27th. We'll...
Hey all, Just thought you guys would be interested in a flight going on in the uk right now - floating 35km for 2 hours now : http://spacenear.us/tracker and...
Yeah, Its a 2000g Hwoyee balloon with helium, minimal fill in an attempt for max altitude, minimal payload (about 300g i think) transmitting on 434.070MHz 10mW...
Rodney and I are launching a second balloon. We should have room for a second backup tracker if someone would like to fly. Otherwise, I'll use a tracker from...
Since we won't be there, (Arrggg!!!) I would love to have you and Rodney fly an ARBONET APRS beacon. Paul, send me your address again (offline) and I will UPS...
That's not unusual in the thin air at altitude, even with a parachute. Descent rate varies inversely with square root of air density. 73 de Mike W5VSI ... -- ...
Yeah, but that was an average descent velocity based on 32,900 m of descent over a period of 24 minutes, derived from the graph on the web page. ;-) -Rodney ...
OK, then. Wasn't sure where your figure came from. But a 24 min descent from 100K' is purdy swuft! We normally get a typical descent time of 40 - 50 minutes...
I'm wanting to run my tracker on 144.39, but leave it slotted. Is anyone else planning on slotting on that frequency? Zack Clobes, W0ZC Project: Traveler ...
Hello All, I've been working on a water-activated tree release - a small spring powered latch that pops open after 3+ hours of rain or high humidity exposure....
I was wondering if anyone can explain this effect. My flight on Sunday (UK) started to float at about 36Km (116K ft) - float lasted about 2.5 hours - during...
You're likely thinking like I used to - that there's next to no atmosphere and wind above about 100K ft, but I've seen some floaters in the 116K ft altitude...
I've had floaters in the 100k+ range that were going 175 mph or more....and yes, likely riding some waves.....even in summertime, the 110k+ range sees some 50...
Probably some weak rotors up there. To quote Dr. Cec Girz of NOAA: "Who sez the wind has to blow horizontally at altitude?" This reflector strips off...
I am getting ready to purchase some electronics for my first balloon satellite. I need to buy an antenna for my APRS tracker. I was going through a catalog...
A short antenna will not be all that efficient in getting your signal out, and probably will introduce a lot of RF into the payload. I have had good luck with...
We've always used home made 2m antennas for our payloads. One of the main reasons is that they often take a terrible beating on landing. We started with a...
My last flight I used the old traditional half-wave dipole. It performed quite well, but had a huge null below it. Which may have been because of the ...
This is also quite true with a whip antenna, though the null is less pronounced because the pattern is not as sharp. We try not to drive right under the...
I use 1/4 wave dipoles for both 2m and 70cm made from 2 pieces of flexible wire. I cover the “hot” lead with flexible plastic radio control antenna tubing,...
