Tag Archives: Ham Radio

Nov 27 2013

WREN heard on 437.405 MHz

UB4UAD screenshot of WREN signal received Nov 26, 2013 at 06:47:13 UT

UB4UAD screenshot of WREN signal received Nov 26, 2013 at 06:47:13 UT

Dmitry Pashkov UB4UAD may have received the first signal from the WREN PocketQube on 437.405 MHz (+/- 10 kHz Doppler).

The WREN team would welcome any further reports. The length of the AFSK-modulated beacon is 1.6 seconds.

The Telemetry Decoder and an Audio File of the beacon are available at http://we.tl/TkWEuhIlnF

Dmitry was using these TLEs:

WREN
1 99922U 13066G 13326.48861818 -.00000055 00000-0 00000+0 0 75
2 99922 097.8066 039.1177 0023760 211.9046 148.0730 14.86334042 151

Source: Dmitry Pashkov UB4UAD http://ub4uad.ru/?p=2917

UB4UAD site in Google English http://tinyurl.com/UB4UAD

WREN on Facebook http://www.facebook.com/StaDoKo

WREN a Ham Radio Slow Scan TV PocketQube Satellite
https://amsat-uk.org/2013/10/24/wren-a-ham-radio-sstv-pocketqube/

Dnepr Yasny launch https://amsat-uk.org/satellites/dnepr-november-2013/

Nov 27 2013

FUNcube-1 Whole Orbit Data Displayed

FUNcube-1 Whole Orbit Data

FUNcube-1 Whole Orbit Data

Whole Orbit Data from the FUNcube-1 (AO-73) amateur radio spacecraft can now be displayed.

Dave G4DPZ writes:

FUNcube-1 shows part of MSE experiment

FUNcube-1 shows part of MSE experiment

We can now display 104 minutes of Whole Orbit Data captured within the satellite and we are working on getting the scaling factors such that all values can be displayed within the same range e.g. Volts instead on mV, Amps instead on mA. etc.

Part of the MSE experiment is nicely represent in the graph on the right:

Heating and cooling when the spacecraft is in sunlight as indicated by the Solar Cell (PV1) voltage.

We will be moving on to High Resolution data next and then mechanisms for downloading the data for local analysis.

Enjoy!

73 Dave, G4DPZ

BBC TV visit FUNcube station at RSGB National Radio Centre
https://amsat-uk.org/2013/11/22/bbc-visit-funcube-station-at-rsgb-national-radio-centre/

FUNcube-1 Deployed !!! https://amsat-uk.org/2013/11/21/funcube-1-deployed/

First Transponder Test https://amsat-uk.org/2013/11/22/funcube-1-ao-73-transponder-tested/

Nov 26 2013

FUNcube-1 (AO-73) Update November 26

FUNcube-1 flight model - Image credit Wouter Weggelaar PA3WEG

FUNcube-1 flight model – Image credit Wouter Weggelaar PA3WEG

The FUNcube Team have some new TLEs for object 2013-066B

2013-066B
1 39417U 13066B   13330.15401895  .00003238  00000-0  45063-3 0   205
2 39417  97.7994  42.6429 0062763 180.4144 179.7025 14.77120863   712

These still seem to be the best fit but the team would appreciate any comments.

There is some discrepancy between the original published frequencies for the spacecraft and those we all experiencing in flight.

It is possible that the transponder input bandpass frequencies may also be varying due with the colder than expected temperatures being experienced.

You can track the RF board temp on the telemetry.The RX board temp varies by some 30 degrees C over a full orbit and this will be affecting the oscillator frequencies.

The team do not yet have final confirmation of the object number so the Doppler shift is probably not yet being precisely counteracted by the various Tracking Apps which will be adding to the confusion.

So just at the moment we cannot give precise guidance on the uplink/downlink formula that users should employ but the team are working on it and would appreciate input and observations.

Analysis of the housekeeping data suggests that all is well on-board FUNcube-1, the team are considering switching to continuous transponder mode for a few hours over the weekend to determine the effect that this would have to the on-board temperatures. Presently we are looking at trying this during an early morning pass over the UK on Sunday, December 1 but this will confirmed nearer the time.

FUNcube-1 has had some good media coverage from the BBC in the past few days:

BBC Radio 5 Outriders Podcast, look for the “Outriders 26 Nov 13: Crypto, crosswords and tiny satellites” edition http://www.bbc.co.uk/podcasts/series/pods
Direct link to podcast http://downloads.bbc.co.uk/podcasts/fivelive/pods/pods_20131126-0530a.mp3

BBC One TV and BBC News http://www.bbc.co.uk/news/science-environment-25084547

Capturing FUNcube-1 Telemetry https://amsat-uk.org/2013/11/26/capturing-funcube-1-telemetry/

Nov 26 2013

Capturing FUNcube-1 Telemetry

John Besedic KK4EQF has released a video showing how easy it is to capture data from the FUNcube-1 (AO-73) amateur radio satellite using the Dashboard App, a computer, antenna and the FUNcube Dongle SDR.

Watch FUNcube Satellite Dashboard and FUNcube Dongle Amateur Radio

Dashboard App http://funcube.org.uk/working-documents/funcube-telemetry-dashboard/

Data Warehouse http://warehouse.funcube.org.uk/

Satellite Tracking Apps https://amsat-uk.org/beginners/satellite-tracking/

Nov 26 2013

CAPE-2 Text-to-Speech heard in Japan

CAPE-2 CubeSat - University of Louisiana

CAPE-2 CubeSat – University of Louisiana

The Cajun Advanced Picosat Experiment satellite CAPE-2, built by students at the University of Louisiana at Lafayette, launched on a Monotaur-1 on November 20, 2013 at 0115 UT.

On November 24 Tetsurou Satou JA0CAW in Japan made this recording of CAPE-2′s Text to Speech functionality in action. The signal is weak, but it is saying: ”Hello I am the Satellite Project from the University of Louisiana at Lafayette” twice in the recording.

The CAPE-2  frequencies are 145.825 MHz FM and 437.325 MHz FSK. On the VHF FM frequency the beacon will be in CW and AX.25.

Update December 2, 2013:

Here is a link to all information the CAPE Team currently has for tracking the Satellite. A program will be released in the next few days to decode data.

http://ulcape.org/cape-2-tracking-update-12022013/

On behalf of the CAPE-2 Team, we would really appreciate any data you can relay to us on the satellite.

Sincerely,
Rizwan Merchant
Call Sign: KF5BNL

Justin Foley KI6EPH produced this video of the Minotaur-1 launch from Wallops Flight Facility in Virginia. The ORS-3 mission carried STPSat-3 and 28 CubeSats. Of the CubeSats, 11 were provided by NASA LSP’s ELaNa 4 mission: CAPE-2, ChargerSat-1, COPPER, DragonSat, Ho’oponopono-2, KySat-2, PhoneSat, SwampSat, TJ3Sat, Trailblazer-1, Vermont Lunar CubeSat. Video taken from U-80, approximately 3.5 km (2.2 miles) from the launch pad.

Watch Minotaur I with STPSat-3 and 28 CubeSats 2013-11-19

Tetsurou Satou JA0CAW CAPE-2 recording http://ja0caw-je0mzi.mo-blog.jp/syumi/files/cape1124-13.mp3

CAPE website http://ulcape.org/

Facebook https://www.facebook.com/CajunAdvancedPicosatelliteExperiment

Minotaur-1 ELaNa-4 satellites https://amsat-uk.org/satellites/elana-4-cubesats/

Nov 26 2013

WREN 437.405 MHz – Help Needed !

WREN - Image credit Stadoko

WREN – Image credit Stadoko

The WREN team report that they have had no confirmed reception of the signal from their SSTV PocketQube satellite which was launched on November 21.

These are the TLEs the team are currently using for WREN:

WREN2
1 10000U 00000 13325.30958333 .00066391 00000-0 78737-2 0 00001
2 10000 097.8055 037.9628 0031909 207.6761 327.4099 14.84238859000010

WREN is transmitting nominally on 437.405 MHz (+/- 10 kHz Doppler shift). The length of the beacon is 1.6 seconds. The beacon is AFSK-modulated. At the following link you can download the Telemetry Decoder and an Audio File of the beacon in order to get an idea how it sounds:

http://we.tl/TkWEuhIlnF

The team say:

“We need help from every Amateur radio operator and Ground station operator we can get”

Facebook http://www.facebook.com/StaDoKo

WREN a Ham Radio Slow Scan TV PocketQube Satellite
https://amsat-uk.org/2013/10/24/wren-a-ham-radio-sstv-pocketqube/

Dnepr Yasny launch https://amsat-uk.org/satellites/dnepr-november-2013/