[amsat-bb] Re: Orbitron help please

2012-10-28 Thread George Henry
Oops, you're right... It was SORTNENG I was thinking of. George, KA3HSW - Original Message - From: "Paul Williamson" To: "George Henry" Cc: "John Heath" ; "amsat bb" Sent: Sunday, October 28, 2012 2:16 AM Subject: Re: [amsat-bb] Orbitron help please On Oct 27, 2012, at 9:03 PM,

[amsat-bb] Re: Five CubeSats altitude

2012-10-28 Thread Trevor .
Interesting chart, it suggests rate of decay is size/mass dependent. RAIKO which is a 2U CubeSat and was deployed 2nd is now higher than all the others. 73 Trevor M5AKA --- On Sun, 28/10/12, Masahiro Arai wrote: > From: Masahiro Arai > Subject: [amsat-bb] Five CubeSats altitude > To: amsat-bb

[amsat-bb] Five CubeSats altitude

2012-10-28 Thread Masahiro Arai
I'm ploting altitude of five CubeSats which were deployed from ISS. The results is interesting. First deployment satellites are lower altitude than laters. I guess this is related to initial velocity at deployment. First Deployment deployment order: #1 WE WISH, #2 RAIKO altitude: WE WISH < RA

[amsat-bb] Re: Polarization for ISS and Weather Satellites

2012-10-28 Thread Trevor .
Some guidance regarding Amateur use of circular polarization is given by IARU Region 1 in the VHF Managers Handbook. IARU-R1 recommend that "Looking into the direction of transmission, helical beam aerials shall have a right-hand thread." See page 122 - 8.8.5 IARU region 1 Technical Recommenda

[amsat-bb] Re: Orbitron help please

2012-10-28 Thread Paul Williamson
On Oct 27, 2012, at 9:03 PM, George Henry wrote: > There used to be a program called NASAWASH that would allow you to clean up a > TLE file by specifying, in a text file, which birds you were interested in, > and then running the program against the new TLE file each time you > downloaded it.