Tag Archives: data

ARISSat-1/KEDR On-Air Test

A test of the system will be conducted on the ISS from 1915 UTC July 30 to 1430 UTC July 31. The standard ARISSat-1/KEDR 2m downlink band plan should be transmitted. The satellite FM signal will also be downlinked on 437.55 MHz. ( borrowed from the details at www.AMSAT.orggo read more !)
Here is the posted frequency chart. Testing is about to start .!.!.

2011_ARISSat-1_Frequency_Chart

Suffering from BufferBloat ?

I picked up on this story from AI4QR‘s Illruminations Blog, and expect to follow up on some of the leads presented. The actual story comes Jim Gettys investigation of congestion issues on networks that should be able to perform better than they do. Jim has posted several threads about this on his blog.

  1. excessive buffering in a network path
  2. ? what is going on ?
  3. saturated links & network neutrality
    and more (each with loads of good comments)
sample results

from DSL Report's SmokePing testing

OK, I’ll be following this – and reading more.
Also passing this around among the various network experts that i know…
Most of them are saying, Hmmm – always wondered why . . . . . . . .

/;^)

Why JNOS ??

Anyone who knows me, or has read much of my blog – recognizes I have a lingering interest in an old-school method of providing basic text-messaging.
In today’s world of instant Internet and SMS at our fingertips, it is still easy for me to remember when that was a fantasy. We felt rather state-of-the-art when we could boast of inter-continental email via satellite gateways in the late 1980s, way before most folks had even heard of the Internet. And all this was via RF, and amateur radio operators who had a vision and a passion for providing such a service well before the “When All Else Fails” phrase was coined…

To me, this simple infrastructure is Continue reading

WB8ELK 20mHF balloon launch today

This just in via the [Balloonatics] YahooGroup …

Doing another Science Fair flight this Saturday from the NSSTC building in Huntsville AL. We also plan to do a paper airplane challenge to see just how far they REALLY go (being assembled by the Makers Local 256 group who won the Hacker’s Spaces in Space high altitude balloon competition to take the cheapest photo from Near Space last Summer)…..upwards of 100 paper airplanes will be released from the stratosphere with serial numbers on them….watch out Germany!!!….most likely they will be landing in Georgia unless we get some that achieve a million to one glide ratio.

Saturday Feb 26th at 1:30 pm CST 34.73 -86.64
WB8ELK on 14.102 MHz USB (audio will be centered around 1700 Hz) Sequence as follows starting at the top of each minute: – CW altitude – DominoEX16 – ASCII RTTY 110 baud – Hellscreiber altitude.
This is the same format that will be used in the upcoming WhiteStar Balloon trans-Atlantic flight. Important NOTE: when using dl-FLdigi to decode….please select the WB8ELK2 payload instead of the usual WB8ELK payload as I’ve added a new telemetry field.  Landing zone is south of Dalton GA.
Streaming video for this Saturday afternoon’s launch will be on the BATC: www.batc.tv – Click on Member’s Streams then select WB8ELK and hit VIEW.
- Bill WB8ELK