ARLA/CLUSTER: Novos telefones via satelite com acesso às bandas de amador (437,425 MHz)

[João Costa > CT1FBF]

PhoneSat: 'Crowd-sourced science' via ham radio

EDN magazine interviews Jasper Wolfe about the new Phonesats which
will carry amateur radio payloads

The Phonesats were developed by young engineers (average age 23) at
the NASA-Ames Research Center.

The EDN article by Steve Taranovich says:

Wolfe told us that NASA’s next generation PhoneSat satellites to be
launched on November 6 and December 6, will emit packets over the
amateur radio band at 437.425 MHz. Satellites transmit using AFSK
(1200 bps) modulation, AX.25 packet coding and have vertical linear
polarization. As in the first launch, hence the term “Crowd-sourced
science” coined by mentor Jim Cockrell.

The two PhoneSat 2 and 3 satellites will transmit with a periodicity
of respectively 28 seconds and 30 seconds. The PhoneSat 2.0 beta
satellite, Alexander, transmits with a periodicity of 25 seconds. One
satellite will be up there for two years and the other for three
months.

Read the EDN article
http://www.edn.com/electronics-blogs/anablog/4419778/
NASA-PhoneSat---Crowd-sourced-science--via-ham-radio

One of the images taken by the first Phonesats, Graham and Bell,
launched April 21, 2013 can be seen at
http://amsat-uk.org/2013/04/26/phonesat-pictures-released/