April 14, 2013

PRISM software for message box

Translated from Japanese

Use the message box is open on Saturday and Sunday every week at PRISM, which is one of the CubeSat of the University of Tokyo. I think you can use the message box is still CUTE-1.7 + APDII Tokyo Institute of Technology, for 1200MHz, here is whether it is not many people there is no uplink facility. Since there is no facility of 1200MHz I also, I have not used unfortunately. I think the band uplink PRISM 145MHz, down link band is a 435MHz, and there are many people who have equipment. Had been where I was confirmed today, the number of messages is 83.
However, since the message is sent is divided into four and that has a header unique to the packet sent from the satellites, the message box of PRISM is a situation difficult to read when reading the message. Has been proposed to create a message that office JE9PEL / 1 were separated according to the packet on the blog, I was wondering quite difficult.
So I tried using a prototype software such as that used in conjunction with UISS AGWPE. Message has been displayed works by excluding the header.

Organize the information in the message box of PRISM from three days this month, the first time I've used C #. Reading of the message that was included with the connection and disconnection of AGWPE, read the specified number of the last message, the message number, write TALK message, save the received data, the function of five or more.
I tried four times path Kinokyo afternoon. Upon receipt, I was in a format readable message me if AGWPE decoded. Transmission was not successful.Was confirmed by another transceiver and other modulated sound by connecting a dummy load later, the output of the PC or are insufficient, modulation is shallow, for transmission, the TNC-22 that is connected to the transceiver was used to receive I could not be decoded.


Screen image of the software that you have created is as follows. I have a "UPRISM" the name of the program to mimic the UISS. In addition, since the current version up, If you are interested, please download and try. Installation is not required, I just run the exe file that you downloaded. In addition, it is necessary to have installed Microsoft. NET Framework3.5SP1 is executed.Maybe. It might also need NET4. 4 because it is already installed on my computer, whether I 3.5 I just can not be confirmed. Development of the program you are using Visual Studio 2010 C #. In addition, the program has been up checks for viruses in virus security 12.2.0189 (vaccine version 9.89.2325).
























Download "UPRISM.exe" 
A brief description of how to use: After you launch (which was necessary to the setting) AGWPE, launched UPRISM. Is connected to the AGWPE Click the "Connect" button on the UPRISM. I cut the AGWPE in "Disconnect". "Get the Latest ID" sends the command "n" number of the acquisition of the final message. "Send" TALK "Message" is sent as TALK your message (up to 39 bytes) messages that you enter the call sign of its own to the right, you enter below. "Read Message" to send a command to retrieve a message ID that you specified in the right-hand side. "Log Save" to save the log file at the time you click, the file name and the ". Log, minutes, seconds Date _ Month Save" in the directory where the UPRISM incoming messages that are displayed in the box on it . I think I hear the sound from the speakers of the computer that the packet when you click the button, such as sending a message. Transmission switching is achieved by the function of the AGWPE.
Before sending it UPRISM (add 6 April), please enter the call sign of their part of the MyCall always. Packets to the callsign of the sender, "URCALL" If you forget this would have been sent. Becomes "URCALL" who write to the message box. If possible I'd like it to display a message box in which you enter when you start, so far, there is no knowledge of me up there.

Source JI1IZR. webpage

April 13, 2013

Nanosatellite linear transponder (1)

3 Unit cubesat:
Delfi-C3 is the first Cubesat with a linear transponder. Unfortunately the transponder had failed after short period of operation. TU Delft was planned to fly a redundant transponder, but this was scrapped prior to launch.
Now we are waiting for another nanosatellite equipped with linear transponder i.e. TURKSAT-3USAT from ITU university .The good news is that the TURKSAT-3USAT have a redundancy for all subsystem.
The backup transponder onboard VU-SAT is a good example of successful to remember.

Beside linear transponder I've came across some other features of similarity and difference between Delfi-C3 and TURKSAT-3USAT.

Structure 3U cubesat .
Size of 10 cm x 10 cm x 34 cm and a mass of ≤ 3 kg
ADCS (Attitude Determination and Control Subsystem).
Both satellites with PMAS (Passive Magnetic Attitude Control System)

EPS (Electrical Power Subsystem):
No batteries used on Delfi-C3. Spacecraft is powerless during eclipse periods of its orbit.
TURKSAT-3USAT 2 EPS units are provided. The primary unit use Li-Polymer batteries in 2 series configuration. The secondary unit use super-capacitors.

There is a camera payload to take images of the Earth and Deorbiting System.
  
One Unit Cubesat:
FUNcube   from AMSAT-UK  ,It will carry a linear transponder too that features a 435 to 145 MHz ,
I think it will be the 1st
1-Unit CubeSat  with a linear transponder !

FOX-1 from AMSAT-NA a 1-Unit CubeSats with an analog FM repeater !
The 1st Cube-sat with FM repeater!


Delfi-C3
Up-link 435.570-530
Down-link 145.880-920

TURKSAT-3USAT
Up-link 145.940-990
Down-link 435.200-250

The first link through the Delfi-C3 transponder


PE1RAH Ultra Small Linear Transponder for satellite, balloon or terrestrial use

April 10, 2013

PhoneSat

Three PhoneSat cubesats will be aboard the Orbital Sciences Corporation Antares(TM) rocket from NASA’s Wallops Flight Facility (WFF) in eastern Virginia scheduled for April 17 at approximately 5:00 p.m. (EDT).
Phonesat carries an amateur radio payload on 437.425 MHz, was chosen as one of the winners in the Aerospace category for the Popular Science magazine “Best of What’s New 2012″ awards. The PhoneSat is a technology demonstration mission consisting of three 1U CubeSats intended to prove that a smartphone can be used to perform many of the functions required of a spacecraft bus.
The satellite is built around the Nexus smartphone which will be running the Android operating system and will be enclosed in a standard 1U cubesat structure. The main function of the phone is to act as the Onboard Computer, but the mission will also utilize the phone’s SD card for data storage, 5MP camera for Earth Observation, and 3-axis accelerometer and 3-axis magnetometer for attitude determination.
One of the nanosatellites, powered by the HTC Nexus One smartphone, will send back pictures of Earth. The other two, running on the Samsung Nexus S, will have two-way S-band radio allowing them to be controlled from Earth.
For more information please visit AMSAT-NA


NASA Chemical Detection Sensor .

NASA's Ames Research Center  has won the 2012 NASA Government Invention of the Year for a tiny sensor that can detect chemicals in the air.

The sensors have been deployed by NASA to detect trace gases in the crew cabin on the International Space Station  (ISS ). Other federal agencies are using sensors based on this technology to detect trace gases in various environments. Specific applications for which the innovative sensors have been tested and used include trace chemical detection in planetary exploration, air monitoring, leak detection and hazardous agent detection using cell phones. Potential future applications may include environmental monitoring, industrial process monitoring and control and bio-medical diagnosis.













Read More @ NASA News

April 2, 2013

STRaND-1 is silent !!

It wasn't an April fool !!
STRaND-1 is silent for the first time since launch on February 25 at 1231 UT.
Many stations were confirmed the absence of the data Beacon .
On 29 March I've notice STRaND-1 flipped to text message beacon .
and back to data beacon on 30 March .
March 31 No signal  was detected over Europe Asia Japan Africa or Australia.
 I've reconfirmed the absent of beacon At 16:30 UTC April 1st.

April 1, 2013

Digital Satellite Guide

The AMSAT-NA Digital Satellite Guide 1994

No comment  !!


March 29, 2013

Lonely, I'm Mr. Lonely with ISS

Over Africa nobody on  APRS.
 I'm lonely I have nobody  .
Sometime I logged on  to see somebody   :)


cmd:c rs0iss-1
*** CONNECTED to RS0ISS-1
Logged on to RS0ISS's Personal Message System
on board the International Space Station
CMD(B/H/J/K/KM/L/M/R/S/SB/SP/ST/SR/V/?)>
l
Msg # Stat Date Time To From @ BBS Subject
10 P 00/00/00 00:26 ALL ST2YL hi
9 BR 00/00/00 00:44 ALL UA9UIZ Hello All
8 P 00/00/00 00:15 ALL I6IBE saluti dalla ISS from italy
7 PR 00/00/00 00:29 ALL PE1RME Greetings
5 P 00/00/00 00:31 ALL I6IBE 73 from ISS all
4 P 00/00/00 00:31 IW6OXP I6IBE saluti via ISS64811 Bytes free
Next message Number 11
Mailbox selected: 0
CMD(B/H/J/K/KM/L/M/R/S/SB/SP/ST/SR/V/?)>
s all
Subject:
hello
Message:
hello from africa
/ex
Message saved as Msg # 11
CMD(B/H/J/K/KM/L/M/R/S/SB/SP/ST/SR/V/?)>
b
*** DISCONNECTED

STRaND-1 text message beacon

16:20 UTC
Orbit #459













STRaND-1 Tracking

STRaND-1 ... Clip

March 27, 2013

STRaND-1 9K6 PKT data

15:46  16:01 UTC
Very strong  and steady  signal from AOS to LOS.
327 Frames received .
STRaND-1 signal remind me Echo-51 Pacsat Broadcast Protocol BBS.
(the old good time of Pacsat) !