Category: Ham Satellite news

Hittade detta från TAPR:

A discussion on the HPSDR-list contained a list from Open Source
evangelist Bruce Peren’s talk at the TAPR Forum in Dayton which
provides supplier sources of relatively inexpensive Open Source”
hardware.

Some of the specific hardware projects listed include:

+ OMAP L138. (TI chip with ARM and a DSP both on board)
http://tinyurl.com/5wb8ocz

+ Papilo FPGA
http://tinyurl.com/3xnfne8
Also there is a 32-channel logic analyzer for $50 there.

+ Arduino http://www.arduino.cc/

+ $15 CPLD (you can build things from 74xx series gate equivalent
logic): http://tinyurl.com/6h28olw

+ Bus Pirate
http://tinyurl.com/47as6x9

Subscription information for the HPSDR list can be found at:
http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org

[ANS thanks George K9TRV and Bruce Perens for the above information]

Runt om byggs och planeras för satelliter med amatörradio ombord. Det är oftast svårt att veta vilka projekt som är seriösa och ibland omöjligt att få tag i aktuell information. Hemsidorna som finns ändrar ofta adress och är dåligt uppdaterade.

Mera info om kommande och aktuella satelliter finns på:

Nasa Space Calendar (bra förteckning på kommande uppskjutningar)
IARU Amateur Satellite Website
AMSAT-NAs infosida om nya satelliter

Hej!

Dagens nät med dåliga konditioner.

Deltagare
SM4EFW
SM5HL
SM7WSJ

*Ny raket från ESA

Film om den nya raketen som även Sverige har en liten del i.
http://esatv-movies.e-vision.nl/videos/mplo/vega_tests_TV_05-10-11_wmplow.wmv

*Studentsatelliter som ska med upp på premiärturen

http://www.esa.int/esaMI/Education/SEM3N03MDAF_0.html

*Månstuds möte i SM (rapport på länken)

http://www.sm4ive.com/ememeetingmay.htm

*AO-51 kraschar fortfarande.

Det är fortfarande problem med batterierna. Dessutom har det varit någon som
aktiverat en crossbandsrepeater på upplänken. Nu verkar missdådaren försvunnit och dom aktiverar AO-51 på 145.880 upp och 435.150 ned.

*Körbara satelliter

AO-7
AO-27
FO-29
SO-50
VO-52
SO-67 (ibland)
HO-68 (fortfarande tyst, bara beacon)

73 Håkan SM7WSJ

Nu har det kommit en ordentlig sammanställning om vår nästa DX satellit.  Länk

AMSAT News Service Bulletin 130.01
>From AMSAT HQ SILVER SPRING, MD.
May 10, 2011
To All RADIO AMATEURS
BID: $ANS-130.01

The ARISSat-1 satellite was intended to be activated in April as 
part of the 50th anniversary of Yuri Gagarin's famous flight. 
However, no ground stations reported hearing the satellite. To 
follow up, the ARISSat-1 team had a teleconference with represent-
atives of RSC-Energia (Russia) and NASA to request a clarification 
of the events and discuss what happened.

According to RSC-Energia, the battery in ARISSat-1 was only charged 
once on the ground and was then used for a variety of tests and dur-
ing the February activation event. It was not recharged prior to the 
April Yuri Gagarin activity since it can only be charged a limited 
number of times on the ISS.

The cosmonauts reported that they activated the satellite and con-
firmed that they heard the signal on the ham radio equipment on board 
the ISS. Since the battery was nearly depleted of its original charge, 
they switched the satellite off after six hours of operation in order 
to prevent over-discharging the battery. The battery was then removed 
from the satellite and stored separately as per their normal battery 
handling procedures. For more information on this battery, please see 
the JAN/FEB 2011 AMSAT Journal.

RSC-Energia reported that their plan is to recharge the battery about 
three weeks prior to the EVA deployment. This will give the cosmonauts 
time to reinstall the battery and test the satellite to make sure it is 
working properly. The EVA deployment is planned for late July of this 
year.

[ANS thanks AMSAT Vice-President of Engineering, Tony Monteiro, AA2TX
 for the above information]

Hej!

Dagens nät på 3740 klockan 10.00

Deltagare
SM4EFW
SM4JLX
SM5HL
SM6NZV
SM7WSJ

*AO-51

AO-51 har problem att förbli stabil när den går i eklips. Batterierna verkar vara i väldigt dåligt skick. Satelliten har varit i omloppsbana sedan 2004.

(klippt från Amsatlistan)

All,

We are having a difficult time trying to restore AO-51 to operation.
Currently, the satellite will not retain the upload of the flight software
across eclipse. The batteries are in very poor condition. We have a few more things to try, but with eclipses peaking around July at ~27 minutes, the long term situation is grim. There is a brief period around November where eclipses are as short as 16 minutes, but past that it is a long climb to 30 minutes or longer eclipses for many years. We have no expected “return to service” date. If you have 9k6 digital capability, you can listen in on our attempts at recovery on 435.150 on many passes over the US.

Please support AMSAT-NA and the other AMSAT groups around the world, and help us get new satellites into orbit. Projects like Fox, FunCube, P3E, and Kiwisat need your financial support to keep our amateur satellite fleet flying.

73, Drew KO4MA
AMSAT-NA VP Operations

VO-52

Satelliten fyllde 6 år den 5 Maj och verkar hur stabil som helst. Tyvärr så är det inte så mycket stationer aktiva över den om man jämför med den  populära FM satelliten AO-51.

*ISS

Enligt uppgift ska ISS ha gjort en banhöjning med 1km under Torsdagen. Det  är för övrigt en del trafik från ISS både på 800 och 825.

En trevlig vecka tillönskas!

73 Håkan SM7WSJ