Amateur Radio News

2018-02-07 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Wednesday Feb 7, 2018
Time: 6:21 PM
Duration: less than 1 minute
Maximum Elevation: 11°
Approach: 11° above NNE
Departure: 10° above NE

2018-02-07 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Wednesday Feb 7, 2018
Time: 7:54 PM
Duration: 1 minute
Maximum Elevation: 20°
Approach: 10° above NW
Departure: 20° above NNW

2018-02-08 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Thursday Feb 8, 2018
Time: 7:02 PM
Duration: 3 minutes
Maximum Elevation: 22°
Approach: 11° above NNW
Departure: 20° above NE

2018-02-08 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Thursday Feb 8, 2018
Time: 8:38 PM
Duration: less than 1 minute
Maximum Elevation: 10°
Approach: 10° above WNW
Departure: 10° above WNW

2018-02-09 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Friday Feb 9, 2018
Time: 7:46 PM
Duration: 3 minutes
Maximum Elevation: 59°
Approach: 10° above NW
Departure: 59° above NNW

2018-02-10 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Saturday Feb 10, 2018
Time: 6:54 PM
Duration: 5 minutes
Maximum Elevation: 41°
Approach: 10° above NW
Departure: 19° above E

2018-02-11 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Sunday Feb 11, 2018
Time: 7:40 PM
Duration: 2 minutes
Maximum Elevation: 40°
Approach: 29° above W
Departure: 26° above S

2018-02-12 ISS Sighting

SpotTheStation - Sightings for Marysville - Mon, 01/29/2018 - 21:34
Date: Monday Feb 12, 2018
Time: 6:46 PM
Duration: 6 minutes
Maximum Elevation: 83°
Approach: 10° above NW
Departure: 10° above SE

Canadian Radio Amateur Finds Resurrected NASA Satellite

ARRL News - Mon, 01/29/2018 - 16:42

When he’s not on ham radio, Scott Tilley, VA7TIL, an amateur astronomer, hunts spy satellites. Using an S-band radio from his home in Roberts Creek, British Columbia, Tilley routinely scans the skies for radio signals from classified objects orbiting Earth, according to a recent article on Spaceweather.com. Since starting 5 years ago, Tilley has located dozens of secret or unlisted satellites. ...

Categories: Amateur Radio News

Anticipated New Building Won’t Be Ready for Hamvention 2018, but Flea Market Could Expand

ARRL News - Mon, 01/29/2018 - 15:34

Due to circumstances beyond their control, Hamvention® 2018 organizers reluctantly are walking back an earlier announcement that a new building would be available for this year’s event at the Greene County Fairgrounds and Expo Center in Xenia, Ohio.

“Despite all of the best efforts and intentions by Greene County, the Greene County Agricultural Society, and Hamvention, we have learned the antic...

Categories: Amateur Radio News

ARRL to Offer Expanded Orlando HamCation® Presence February 9-11

ARRL News - Mon, 01/29/2018 - 11:19

ARRL will be represented in force and with an expanded presence at Orlando HamCation February 9-11 in Orlando. The event, which also is the 2018 ARRL Florida State Convention, takes place at the Central Florida Fairgrounds and Expo Park. Team ARRL will include Headquarters staff and volunteers. ARRL concessions at HamCation will support membership, publication sales (ARRL store), the ARRL South...

Categories: Amateur Radio News

3Y0Z Bouvet Island Team Has Some 600 Nautical Miles to Go

ARRL News - Mon, 01/29/2018 - 07:59

The 3Y0Z DXpedition, now on board the Betanzos en route to Bouvet Island, the third most-wanted DXCC entity (now behind Kosovo and North Korea), is still some 600 nautical miles from its destination. The DXpedition had been hoping to be up and running by this week.

“We had another night of rocking and rolling,” team leader Ralph Fedor, K0IR, reported today. “A strong southwesterly wind produced ...

Categories: Amateur Radio News

Why is there so much TLE confusion when new Cubesats are launched?

AMSAT news - Sat, 01/27/2018 - 21:53

Every time a CubeSat gets launched, there is some confusion on what TLEs should be used.   This is the result of the process of launching a new amateur CubeSat with other CubeSats, often several dozen at a time.  We then start the  process of determining which object in a “flock” of CubeSats  is associated with a particular spacecraft.

Pre-launch TLEs, that is calculation based on the expected orbit, are usually supplied by the launch provider. Pre-launch TLEs are used until post-launch TLEs (for the group of objects that your satellite is in) are released from the US Department of Defense Joint Space Operations Center (JSpOC) based on observations made with cameras and radars.

There is a a 5 to 10 day period of tracking a group of CubeSats until they separate enough to isolate the one of interest. By observing the Doppler shift on transmissions from a particular satellite against the calculated Doppler shift from all candidate object TLEs, we can positively associate an object with a particular satellite. In the case of AMSAT satellites, we then advise JSpOC which object number is “ours”

Finally, an individual satellite and its associated TLEs are determined and we settle down to an single, accurate, reliable set of TLEs … and all the other “best guesses” go away, although they may be still floating around on the Internet. But, there are so many variables  – did you launch on time, did you get released on time, has the group your CubeSat is in separated enough to identify your satellite, etc. that the process that can be both confusing and annoying at the same time.

AMSAT strives to minimize confusion when distributing TLEs.  Dummy object numbers are used for pre-launch TLEs since final object numbers cannot be assigned yet.    Immediately post launch we may post candidate objects with generic names like “OBJECT C”.    Finally, when positive association between an object number and a spacecraft is made, we will use the common name of the satellite.   We always recommend using TLEs from the Keps mailing list or the current bulletin or bare elements from the AMSAT web site.

 

by Ray Hoad
WA5QGD
Orbital Elements Manager

 

 

Categories: Amateur Radio News

FoxTelem Version 1.06 Released

AMSAT news - Sat, 01/27/2018 - 18:39

​I am releasing version 1.06 of FoxTelem today.  This release addresses several defects and instabilities in FoxTelem 1.05 and earlier.  It also introduces a new Earth Plot that allows any telemetry value to be plotted as a heat map against a map of the earth.  For more details about the Earth Plot and some example plots, you can read a quick tutorial that I have written here:
http://www.g0kla.com/workbench/2018-01-26.php

As always, let me know if you see any issues or log them on Github at https://github.com/ac2cz/FoxTelem/issues

KEY CHANGES
~~~~~~~~~~~
* EARTH PLOTS allow you to plot any telemetry value as a heat map on a map of the earth
* Allow graphs and telemetry results to be searched with UTC dates and for ranges of uptime/dates
* Allow stepping through the telemetry with up/down arrows
* Prevent hang when decoder starts if FCD returns an error
* Fixed bug where TLEs were not updated in the name is changed in the spacecraft settings window
* Fixed crashes introduced in 1.05 release
* Display all HERCI High Speed payloads when Raw Byte Payloads shown.
* Fix bug where missing TLE disables spacecraft from being tracked at all
* Fixes bug where DDE connection to SatPC32 fails with European decimal point format
* Add MPPT calibration values for Fox-1D
* Improved the RF signal measurements
* Improved the Find Signal algorithm
* Space graph labels more evenly
* Put the spacecraft tabs in FoxId order

And many other bug fixes. Full list of changes here:
https://github.com/ac2cz/FoxTelem/milestone/3?closed=1

You can download the latest version of the program from:

Categories: Amateur Radio News

2018-01-26 ISS Sighting

SpotTheStation - Sightings for Marysville - Fri, 01/26/2018 - 19:34
Date: Friday Jan 26, 2018
Time: 7:04 PM
Duration: 3 minutes
Maximum Elevation: 89°
Approach: 23° above SW
Departure: 36° above NE

2018-01-27 ISS Sighting

SpotTheStation - Sightings for Marysville - Fri, 01/26/2018 - 19:34
Date: Saturday Jan 27, 2018
Time: 6:11 PM
Duration: 6 minutes
Maximum Elevation: 44°
Approach: 13° above SSW
Departure: 10° above ENE

2018-01-27 ISS Sighting

SpotTheStation - Sightings for Marysville - Fri, 01/26/2018 - 19:34
Date: Saturday Jan 27, 2018
Time: 7:48 PM
Duration: 1 minute
Maximum Elevation: 23°
Approach: 17° above WNW
Departure: 23° above NW

2018-01-28 ISS Sighting

SpotTheStation - Sightings for Marysville - Fri, 01/26/2018 - 19:34
Date: Sunday Jan 28, 2018
Time: 6:56 PM
Duration: 3 minutes
Maximum Elevation: 38°
Approach: 28° above WNW
Departure: 19° above NNE

2018-01-29 ISS Sighting

SpotTheStation - Sightings for Marysville - Fri, 01/26/2018 - 19:34
Date: Monday Jan 29, 2018
Time: 7:40 PM
Duration: 2 minutes
Maximum Elevation: 16°
Approach: 11° above NW
Departure: 16° above NNW

2018-01-30 ISS Sighting

SpotTheStation - Sightings for Marysville - Fri, 01/26/2018 - 19:34
Date: Tuesday Jan 30, 2018
Time: 6:48 PM
Duration: 4 minutes
Maximum Elevation: 21°
Approach: 14° above WNW
Departure: 12° above NNE

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