Category Archives: APRS

Kenwood TH-D72, Duracell vs Lithium.

Posted on May 1, 2013 by j0n

In keeping in the battery longevity theme here and here, recently, Don, AB1PH posted to the Yahoo TH-D72 group about some testing he did with primary cell batteries in the BT-15 AAA Holder.  Don compared Everready Ultimate Lithium (L92) batteries, … Continue reading →

Posted in Amateur Radio, APRS | Leave a comment

ADS-B and Xastir

Posted on June 3, 2012 by j0n

It’s a rainy day, nothing much else to be doing so why not throw some python together to link an ADS-B receiver to Xastir. Well, thats what G0HWW did this afternoon, while I cruised the HF bands for victims.  

Posted in Amateur Radio, APRS, Computing, Technology | Leave a comment

More on TH-D72 battery life.

Posted on January 29, 2012 by j0n

I was chatting with two guys in the office about the results from my previous tests with the TH-D72. In the previous tests, the radio was configured to receive all APRS packets.  Now, considering EI4HQ’s scenario, which was to have … Continue reading →

Posted in Amateur Radio, APRS | 1 Comment

TH-D72 Battery Life

Posted on January 12, 2012 by j0n

So EI4HQ and I were discussing “toys” and presents in general, and he inquired about the TH-D72 and battery life. I purchased mine in November 2010 (G0HWW twisted my arm) and have used it for various things from AREN events, listening … Continue reading →

Posted in Amateur Radio, APRS, AREN | 3 Comments

Next stop Morocco!

Posted on December 13, 2011 by j0n

An amateur radio balloon carrying APRS on 144.390 MHz FM has left the USA. Requests have been sent out for APRS operators in the British Isles and Europe to listen for and help track the transatlantic balloon! The APRS transmission, … Continue reading →

Posted in Amateur Radio, APRS, Travel | Leave a comment

(AX.25) Packets from International Space Station.

Posted on June 23, 2011 by j0n

Nothing overly complicated. I am capturing the output from the mheard command, part of the Linux AX.25 tools package. The AX.25 port (Radio/TNC/Omnidirectional antenna) is listening for packets from the International Space Station and PCSAT. The output updates every 10 … Continue reading →

Posted in Amateur Radio, APRS, AX25, Computing | Leave a comment

Xastir gets OSM

Posted on June 12, 2010 by j0n

Pretty much what it says. Last Wednesday Xastir got OpenStreetMap support in CVS courtesy of Jerry Dunmire, KA6HLD. Even though Jerry says its early days yet, it is “good enough” for me already. Way to go Jerry!

Posted in Amateur Radio, APRS, Computing, Mapping, software | Leave a comment

IPv6 and aprs.fi

Posted on March 4, 2010 by j0n

Recently, Hessu, OH7LZB, began the process of migrating his service to IPv6.  While he isn’t finished (AAAA still to be added) ipv6.aprs.fi is up and running and usable today.

Posted in Amateur Radio, APRS, AX25, Computing, IPv6 | Leave a comment

Balloon Experiments with Amateur Radio.

Posted on September 29, 2009 by j0n

Some great High Definition video and information here. Bill Brown, WB8ELK mentioned these guys during his very entertaining speech at the DCC. He is hoping to do a “long duration” flight in the relatively near future,  hopefully Amateur Radio Operators … Continue reading →

Posted in Amateur Radio, APRS, AX25, Technology | Leave a comment

APRS on the International Space Station

Posted on September 21, 2009 by j0n

Henk, PA3GUO has made a video showing the ISS passing over his location while both transmitting through and decoding the APRS data being relayed through the ISS AX.25 repeater. The video is available here.

Posted in Amateur Radio, APRS, AX25 | Leave a comment