Caution: I have encountered at least two industrial gas suppliers that offer lower cost 'balloon grade helium' which is not 99% or better helium.(!) It is 30%-40% nitrogen. The thought and rationale i

Hello Juan, I talk to a lot of people and groups who are new to ARHAB, and many of them focus on the launch site. If recovery of the payload is a goal, my recommendation is that the larger focus shoul

Hello Juan, It's exciting to hear about this first high altitude amatuer balloon in Guatemala. I travelled extensively in Guatemala in the mid 1990's. I still have vivid memories of the extremely rugg

Be sure to check Www.redyns.com/reference/RockoonTrade.pdf for simulation runs of a standardized rockoon launched from altitudes from sea level to 160k feet. Sent from my Verizon Wireless 4G LTE Smart

I think I'm the only ham and balloon pilot on the list. I'll offer my fairly strong suggestion for a lightweight 'dumb tracker' attached half way up the crown line. That gets the gear out of the baske

Balloon theodolite. Sent from my Verizon Wireless 4G LTE Smartphone

-------- Original message -------- From: kmcaviezel <kmcaviezel@...> Date: 09/19/2013 3:04 PM (GMT-08:00) To: kmcaviezel <kmcaviezel@...> Subject: Fwd: Helium Facts. Subject: Helium Facts.

Jonathan was using a Byonics AIO running on 8aa batteries and j pole antenna. Sent from my Verizon Wireless 4G LTE Smartphone

Hello Dave, Indeed, you are not the first Part 101 exempt unmanned balloon operator to be contacted by the FAA after filing a NOTAM for an exempt flight. One core issue is likely that the FAA handles

You'll need the molecular weight of the substance in question to convert the grams to moles. What is the substance? best -Mark ng0x

Is anyone using the Baofeng radios yet? If yes, would appreciate a use/satisfaction report. And how straight forward is the programming ? best - Mark ng0x

http://www.cnn.com/video/?hpt=hp_c3#/video/us/2012/10/26/ufo-spotted-over-kentucky.wlex Gosh, I wonder what it could be ?

Unmanned high altitude balloon launch, attendance. Possibly topped by the unmanned camera balloon launched by film crews under the direction of Leni Riefenstahl at the 1936 Olympics- stadium capacity

Hello Norm, Here is the .pdf of the unwinder patent. I rather like the simplicity & low parts count. The one downside I see is that it may be a bit of a chore to load it up. One cool characteristic is

Gentlemen: Thank you for the video clips. Now as far as the unwinder, the Graw unit looks good. I am hoping I'll be able to get some without a big hassle. I also looked up and reviewed US Patent 45290

Ballooners: Can anyone direct me to an online video of a windy, 'drag' launch? I'm planning a flight and one contributor want to launch with a really really long flight string and I am trying to show

James and the gang, Respectfully, there's plenty of room for both devices on a payload flight string. Although I've been a huge fan of running the TH-D7+GPS in the car since, well, more than 10 years

(from Dan) It may be impossible(or too expensive) to find a hose pressure rating greater than the direct tank pressure (~2800 psi), but you can simply put a pressure relief valve/device at the tank, s

Hello Larry, Great to hear you are moving closer to flight. Fill systems can be as complex or simple as you care to make them. I know many amateur groups use regulators. In general I do not recommend

A visual siting! very cool! - mark ng0x