Tag Archives: Ham Radio

Jul 21 2015

Students receive FUNcube-1 (AO-73)

Student Receiving FUNcube-1 CubeSat

Student Receiving FUNcube-1 CubeSat

David Haworth WA9ONY showed students how to receive the FUNcube-1 amateur radio CubeSat during a workshop at Pine Mountain Observatory, Oregon.

Students adjusting the antenna

Satellite Antenna

FUNcube-1 (AO-73), launched on November 21, 2013 is an educational satellite built by volunteers from AMSAT-UK and AMSAT-NL with the goal of enthusing and educating young people about radio, space, physics and electronics.

The satellite carries a BPSK telemetry beacon on 145.935 MHz for students to receive and a linear transponder for two-way amateur radio communications. In addition there is a materials science experiment, from which the school students can receive telemetry data which they can compare to the results they obtained from similar reference experiments in the classroom.

On the FUNcube Yahoo Group David posted:

FUNcube-1 activities were successful at Pine Mountain Observatory workshop on Sunday, July 12 to Wednesday 15.

During this time 759 packets were received which resulted in a ranking of 456.

The student were impressed when we were the only station receiving a packet and seeing our FM2 message.

The antenna was a Arrow II Portable 146/437-10 3 element 2 meter Yagi on a camera tripod.

Watch PMO Workshop FUNcube-1 Satellite Telemetry Pass July 13, 2015

Watch PMO Workshop FUNcube-1 Satellite Receving Equipment

Watch PMO Workshop FUNcube-1 Satellite Pass July 13, 2015

FUNcube-1 presentation PDF given by David Haworth WA9ONY at SEA-PAC on June 6, 2015

BBC News report about FUNcube-1 http://www.bbc.co.uk/news/science-environment-25084547

FUNcube Yahoo Group https://amsat-uk.org/funcube/yahoo-group/

FUNcube website http://FUNcube.org.uk/

Jul 20 2015

Apollo Soyuz SSTV Event Diploma

International Space Station - Image Credit NASA

International Space Station – Image Credit NASA

In commemoration of the Apollo Soyuz SSTV event, ARISS will be distributing a limited edition diploma to those who received one of the SSTV images transmitted from the International Space Station on July 18-19, 2015.

You can receive a commemorative diploma by filling in one of two application forms:
•  English version: http://ariss.pzk.org.pl/Apollo-Soyuz/en
• Russian language: http://ariss.pzk.org.pl/Apollo-Soyuz/ru

The deadline to apply for the diploma is the end of July 2015.

73, Frank Bauer, KA3HDO
ARISS International Chair

Amateur Radio on the International Space Station (ARISS) http://www.ariss-eu.org/

Jul 19 2015

PSAT/BRICsat Status

28 MHz PSK31 Receiver Board Flight Prototype - Brno University of Technology

28 MHz PSK31 Receiver Board Flight Prototype – Brno University of Technology

Tomas OK2PNQ provides an update on the PSK31 transponders carried by the CubeSats PSAT (NO-83) and BRICsat (NO-84).

I am from the group, which have built the PSK transponders. The PSAT is working fine and the TLE from AMSAT works for the predictions. The receiver is a bit deaf probably due to the mistuning of the receiving antenna, so please use the power, which is necessary to get solid copy in downlink.

To the BRICsat, the satellite has negative power budget, it is off for the long periods of time and switches on for short periods varying between 5 and 20 minutes approx.  In the previous weeks we had receptions every day on one pass, but between this occasions, there was week without a beep above Europe. Any kind of positive reception reports from both sides (PSK downlink, packet downlink) are welcomed.

The most important information: The BRICSAT is leading in orbit in front of the PSAT, we are using the TLE from the ULTRASAT team from the page
http://mstl.atl.calpoly.edu/~ops/ultrasat/ultrasat_jspoc.txt

and we are using ULTRASAT1=90720 as BRICsat and ULTRASAT3=90722 as PSAT.

From the receptions on omni antennas and AOS/LOS times and Doppler, those are the right elements.

Thanks for reading a bit lenghty info.

73! de Tomas OK2PNQ
http://www.urel.feec.vutbr.cz/esl/

PSK31 satellites https://amsat-uk.org/beginners/how-to-work-psk31-satellites/

ParkinsonSAT (PSAT) http://www.aprs.org/psat.html

Jul 17 2015

Duchifat1 Update

Duchifat-1 Mission PatchThe Duchifat1 CubeSat, built by students at the Herzliya Science Center (4X4HSC), was launched on June 19, 2014.

Duchifat1, launched 1 year ago, was supposed to have onboard a “standard” space APRS transceiver operating on 145.825MHz.  That would have made the satellite compatible with ISS, other APRS satellites and APRS-IS.

Unfortunately, a short time before launch, we realized that technically we couldn’t keep the intended 145.825MHz transceiver in the final satellite configuration but we still wanted to make some contribution to amateur radio in space.  After a quick research we discovered that the 2nd transceiver onboard Duchifat1, the ISIS (Netherlands) TRXUV planned for Duchifat1’s command and telemetry can be programmed to also accept APRS packets!, however, limited to 14 characters long.  Also, the downlink digital modulation was not the common space APRS of 1200bd AFSK but 1200bd BPSK, and the uplink frequency is in the UHF band.

We therefore came with the idea of supporting COMPRESSED APRS, and instead of the standard digipeater, we implement kind of “store&forward” function in which the satellite collects packets during its flight in orbit and the students of Herzliya Science Center will download those packets and display them on a world map in a web site programmed by them.

We published here a few weeks ago the opening of this service and put in our web site detailed instructions on how to use the Byonics TinyTrak4 (TT4) tracker, with or without GPS to generate packets in the required format that Duchifat1 will accept.  So far, TWO pioneers used this service. THANKS PETER & MIKE!

While the TT4 solution is still the best we know for sending your actual live position to Duchifat1, we are happy to announce the ‘APRS Encoder’, a new tool in our web site that can generate for you the COMPRESSED APRS packet for Duchifat1.

The input for the new APRS Encoder is the station’s (or nearby)  coordinates set that can be obtained from Google Maps, so this solution is naturally adequate for stationary base stations, while mobile stations should still use the Byonics TT4.

​The output of the APRS Encoder is a 14 character long Compressed APRS packet that can be converted to 1200bd AFSK with a hardware TNC or software like MIXW – just copy the 14 chars string and paste it into the MIXW window. The MIXW should be set to mode Packet, using the most common “VHF 1200 baud (Standard 1200/2200Hz)” setting.  Prior registration is required.

All the details on the satellite, the registration and the APRS Encoder are at this link http://www.h-space-lab.org/

Please read all the documentation in the site.

We wish you all good luck and enjoy!

73 from 4X4HSC team: instructors 4Z1WS and 4X1DG, and the students!

Jul 16 2015

International Space Colloquium Guildford – Speakers for Saturday, July 25

Holiday Inn Guildford side entrance

Holiday Inn Guildford – Colloquium entrance

There is a great line up of speakers for the AMSAT-UK International Space Colloquium at the Holiday Inn, Guildford as well as visits to the satellite construction facilities at the SSTL Kepler Building. The event is open to all.

Admittance is £10 for the day and car parking is free.

Speakers for Saturday, July 25

• Introduction by Prof. Sir Martin Sweeting G3YJO OBE, FRS, FREng, FIET

• SSTL Update by Tony Holt, Director, SSTL

• The Satellite Applications Catapult PocketQube Kit by Chris Brunskill

• AMSAT-DL Presentation by Peter Guelzow DB2OS

• What else does Space do for You! by Prof. Richard Holdaway, former Director RAL Space

• The FUNcube project – results so far! by Jim Heck G3WGM

• AMSAT-NA / Fox-1 Presentation by Drew Glassbrenner KO4MA

• ISIS – Innovative Solutions In Space by Eric Bertels

• Dutch Satellite Days by Ivo Klinkert PA1IVO

Further details and programme schedule spreadsheet at https://amsat-uk.org/colloquium/

Jul 14 2015

ISS SSTV July 18-19 on 145.800 MHz FM

ISS SSTV image 1 received by Murray Hely ZL3MH January 31, 2015

ISS SSTV image received by Murray Hely ZL3MH January 31, 2015

ARISS SSTV images will be transmitted this weekend from the amateur radio station in the ISS Russian Service Module to commemorate the 40th Anniversary of the Apollo-Soyuz Mission.

40 years ago this week, the historic joint Apollo-Soyuz mission was conducted.  Apollo-Soyuz (or Soyuz-Apollo in Russia) represented the first joint USA-Soviet mission and set the stage for follow-on Russia-USA space collaboration on the Space Shuttle, Mir Space Station and the International Space Station.

The Soyuz and Apollo vehicles were docked from July 17-19, 1975, during which time joint experiments and activities were accomplished with the 3 USA astronauts and 2 Soviet Cosmonauts on-board.  Apollo-Soyuz was the final mission of the Apollo program and the last USA human spaceflight mission until the first space shuttle mission in 1981.

To commemorate the 40th anniversary of this historic international event, the ARISS team has developed a series of 12 Slow Scan Television (SSTV) images that will be sent down for reception by schools, educational organizations and ham radio operators, worldwide.  The SSTV images are planned to start sometime Saturday morning, July 18 and run through Sunday July 19.  These dates are tentative and are subject to change.  The SSTV images can be received on 145.800 MHz FM and displayed using several different SSTV computer programs that are available on the internet.

We encourage you to submit your best received SSTV images to:
http://spaceflightsoftware.com/ARISS_SSTV/submit.php

The ARISS SSTV image gallery will post the best SSTV images received from this event at:
http://spaceflightsoftware.com/ARISS_SSTV/index.php

Also, as a special treat, on Saturday July 18 the ISS Cosmonauts will take time out to conduct an ARISS contact with students attending the Moon Day/Frontiers of Flight Museum event in Dallas Texas.  This Russian Cosmonaut-USA Student contact is planned to start around 16:55 UTC through the W6SRJ ground station located in Santa Rosa, California.  ARISS will use the 145.800 MHz FM voice frequency downlink (same as the SSTV downlink) for the Moon Day contact.

For more information on ARISS, please go to our web site http://www.ariss.org/

The ARISS international team would like to thank our ARISS-Russia colleague, Sergey Samburov, RV3DR, for his leadership on this historic commemoration.

Frank H. Bauer, KA3HDO
ARISS International Chair

Previous ISS SSTV transmissions have used the SSTV mode PD180 with a 3-minute off time between each image.

ISS Slow Scan TV information and links for tracking the ISS at https://amsat-uk.org/beginners/iss-sstv/

You can receive the SSTV transmissions online using the SUWS WebSDR remote receiver located near London along with the MMSSTV software https://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/