New Symbol Graphics for APRS

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APRS.fi is introducing new symbol graphics and better support for mobile devices

 

The new symbols are drawn in vector format (as opposed to a raster format at a fixed resolution), allowing them to be rendered at larger and smaller sizes without distortion or blurriness. The new symbols are slightly larger than the old ones, making them easier to recognise on modern displays having smaller pixels than the old ones. They're also available in double resolution so that they're properly sharp on the 4K/retina displays found on many modern tablets, phones and computers!

One downside is that they are just a little bit bigger than the old ones, taking up more space on the screen. On the other hand, the old ones were a bit too small on modern displays, and the very small resolution did make it hard to understand what the symbol tried to mimic.

Read the APRS.fi blog  - http://blog.aprs.fi/2015/11/new-symbol-graphics-and-better-support.html

Beta site -  http://beta.aprs.fi/

Amateur radio Automatic Packet Reporting System (APRS) - http://www.aprs.org/

APRS UK Yahoo Group - https://groups.yahoo.com/group/APRSUK

dogparkSDR Version 1.0 Released

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Dog Park Software have announced that version 1.0 of dogparkSDR has been released.

dogparkSDR is the first Native Mac client for the Flex Radio Systems Signature series of software defined radios

Features in the release 

  • OS X 10.9+ and Intel 64 bit Processor.
  • OS X 10.11 (El Capitan) compatible.
  • 1 Panadapter and 2 VFO Slices.
  • Filter width/Presets.
  • Automatic Notch Filter.
  • Meters.
  • Equalizers.
  • FlexControl support.
  • Profiles support.
  • CWX support.
  • Quick Record/Playback support.
  • Edit Band buttons.

Free Demo Download - http://dogparksoftware.com/dogparkSDR.html

Flex Radio - http://www.flexradio.com/amateur-products/flex-6000-signature-series/

Fox Telemetry Decoder Software Version 1.0

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Version 1.0 of the Fox Telemetry Decoder software has been released, enabling setup, testing, and debugging of your Fox-1A ground station prior to the launch of the satellite. FoxTelem is used to demodulate, store and analyze telemetry data from AMSAT's Fox series of CubeSats.

Fox-1 satellites include two telemetry formats:

  • Slow Speed, also called Data Under Voice (DUV) is 200 bps FSK data  sent at the same time as the transponder audio. Whenever the transmitter is on, data is being sent. This happens during beacons and  during live QSOs.
  • High Speed is 9600 bps FSK sent instead of the transponder. This is  used for data intensive experiments such as the Virginia Tech Camera. This is only active when commanded from the ground. You can recognize  High Speed because it sounds like an old school computer modem.

FoxTelem will receive and store both formats assuming you can feed it audio that does not have the frequencies below 200 Hz filtered. For High Speed, the audio must also extend to include the full 9600bps bandwidth of the FM signal. For both modes this is best achieved from a Software Defined Radio or from the 9600 bps packet port of some radios. The FoxTelem User Guide provides more details.

FoxTelem is supplied as an archive file (.zip on windows, .dmg file on MacOs, .gzip on Linux).

Downlad - http://www.amsat.org/?page_id=4532