Tag: Linux

LHS Show Notes #033

Posted on by Russ Woodman

All of us at Black Sparrow Media wish to express our sincere condolences to Richard on the passing of his mother. Our thoughts and prayers go out to Richard and his family. He won't be joining us this time, so we'll carry on with a round table episode.

Contributors:

  • Ted WA0EIR, in snowy Iowa, Andy aka Integgroll on IRC, and Bill KA9WKA join us for a round table discussion.
  • Jay writes in about the Linux Journal episode (#029) and the analysis of the Amazon Kindle and DRM issues. Our panel talks about the Kindle , e-readers in general, and DRM issues. Russ mentions how Amazon retracted a couple of George Orwell titles.
  • Google alert tells us that Linux in the Ham Shack and other amateur radio podcasts are being played over a local repeater by Tony VK7AX for the enjoyment of listeners in SE Australia and Tasmania. Good on ya', mate!
  • LHS was mentioned on Joe's (WN2SYZ) blog. Thanks, Joe!
  • Dave, KG4GIY, posted another mention of LHS at Linux Journal when we talked about software-defined radios (SDR) in Episode 26. Thanks, Dave! Check out the Linux Journal amateur radio content.
  • Chris, Twitter ID WOKNSS, tweeted about catching up on back episodes of LHS. Thanks, Chris!
  • LHS was mentioned at the Low SWR podcast website. Low SWR is an amateur radio podcast produced by Rich KD0BJT and Brady KD0BJS. They're up to eight episodes already! Good job, guys!
  • The Axis wrote to us, Mint Cast, and The Linux Link Tech Show to thank us all for content about the Linux program screen. We're glad you enjoyed it. A possible application might be operating digital modes remotely. (Bonus Show Notes Content: The February 2010 issue of QST has a Short Takes article about the Glentek Radio-to-Ethernet Controller. Glentek has a variety of products to facilitate remote operation of an amateur radio station. -Ed.)

Announcements:

  • Texas Linux Fest is April 10, 2010 at the Monarch Events Center in Austin, TX. You might find Richard or Russ there, so say Hi!
  • Donations: We've achieved our goal! Walter, KV6M, made a second donation (thanks, Walter!), and the remainder was supplied by Beth Lynn Eicher of the Ohio Linux Fest. Thank-you, Beth Lynn! Look for the Linux in the Ham Shack booth at Dayton Hamvention 2010. (Note: the podcast incorrectly identifies Walter as WN3LIF, another Walter that also contributed.  We apologize for the confusion. -Ed.)

Links and Notes:

  • From the chat room, Ronnie K4RJJ, asks what PDAs would work with sound card digital modes. There's i-PSK31 that will allow you to use PSK31 with your iPhone and radio. It's also available via the iTunes store. (Note: I mistakenly said the price was $1.99. The actual price is $5.99. Sorry. -Ed.) There is also some documentation on how to wire the headphone plug for the iPhone for connection to your radio.
  • Ted rants about the use of macros in digital conversations, and the panel discusses.
  • The panel discusses the appropriate power levels for digital modes. Lower power, say less than 35W, is usually enough. There are devices, such as the PSKMeter, that attaches to your transmitter output and, along with software, will display your signal so you can avoid splatter. PSKScope is another program for the PSKMeter that provides additional functionality, such as automatic audio drive level control, but only in the Windows version. A Linux version of PSKScope is available, but does not have the automatic drive level control. The other device discussed is the IMD Meter, which is a standalone device that displays your IMD while you are transmitting. No computer or software is necessary.
  • Next, the panel talks about operating via VHF/UHF satellites. (There's a good introductory article on the AMSAT web site. Randy, K7AGE, has produced several YouTube videos of various amateur radio activities, including this one where he operates AO-51. Another video from the 2007 Dayton Hamvention shows a similar system.
  • Bill introduces the microHAM USB Interface III. (That's the Americas website. There is also a site for Europe. The panel discusses the merits of the device.
  • We then move to a discussion of Linux Mint 8 "Helena".
  • Bill rants about Yaesu microphones on their VHF/UHF radios.
  • Russ talks about some cloud computing applications: Ubuntu One and Dropbox. The panel discusses the relative risks and advantages of using such services.

Music:

  • "Don't Go" by TenPenny Joke from the album "Ambush on All Sides".
  • "Mirror of Humans" by Amity in Fame from the album "Dinner for One".

Xastir and Linux Mint

Posted on by Russ Woodman

Installing Xastir in Mint

Ben, VK5JFK, left a comment on my review of Linux Mint at the Linux in the Ham Shack web site, asking if I had installed Xastir under Mint.  I had not, but since Richard talked about Xastir in Episode 23, and Linux Mint is the "official" distribution for Linux in the Ham Shack, I thought a brief how-to article might be useful to our listeners.

In fact, installing Xastir in Linux Mint is fairly easy.  Here's a step by step procedure:

  • Launch the Synaptic Package Manager
  • Select the Amateur Radio (Universe) repository
  • Click on Xastir in the list - version 1.9.4-3 was available as I did this
  • Click on Apply - a bunch of dependencies were selected, and after approving that list, off it went.

A few minutes later (over a DSL connection) the installation was complete.

The first (and only) problem I encountered was that the installer did not create an entry in the Mint menu.  To remedy this, I clicked Menu, Preferences, Main Menu.  This utility allowed me to add a new menu category I called Amateur Radio, and a new item in that category that I creatively called Xastir.  The associated command is "/usr/bin/xastir".  After logging out and in, the new menu item appeared.

Before running Xastir for the first time, I opened a terminal and entered the command:

$ callpass ka9wka

and the computer responded:

Passcode for ka9wka is 19125
$

Of course, you will use your callsign and you'll receive a different passcode.  You'll need that number when configuring the interface.  No, the callsign is not case-sensitive.

After running Xastir, you must perform some configuration, as Richard discussed.  For this test, it was simply a matter of defining my location and adding the Internet interface.  When you launch Xastir the first time, it will automatically open the "Configure Station" dialog, but you can return to that by clicking File, Configure, Station.  Here I entered my callsign and location.  I left the rest of the options at the defaults.

Next, I clicked the Interface menu option, then Interface Control.  This brings up an empty list of configured interfaces.  I clicked Add, chose "Internet Server", and clicked the Add button. The "Configure Internet" dialog box appeared.  I entered 19125 into the Passcode field (see above), and "r/42/-87/500" (without the quotes) into the Filter Parameters field.  This filter says, I believe, show all stations within a radius of 500km of 42 degrees N and 87 degrees W.  Modify to suit your location and preference, and click OK.  Finally, still in the Interface Control dialog box, I clicked Start All.  The status changed from DOWN to UP, and I closed the dialog box.  In a few moments, stations began to appear on the map.

There are a lot more options in Xastir that I haven't explored here.  For example, if you're planning on installing this on a laptop with a TNC and GPS device attached, you'll need to add interfaces for those as well, and you'll probably want to add a more detailed map for your area.  For now, this should get Xastir running under Linux Mint with a minimum of time and bother.

73,

-Bill, KA9WKA

LHS Show Notes #027

Posted on by Russ Woodman

Contributors:

  • Russ visited a Ham Radio Outlet in Virginia and bought a new Yaesu FT-7900R for his truck.
  • Richard bought a Kenwood TS-50, some wire and antennas at the Belton hamfest, but hasn't installed them yet.
  • John, EI7IG, says you don't need AX.25 support in the kernel to run XASTIR, since you're running the TNC in KISS mode. He also says that APRS is useful for emcomm events, disseminating local weather information, and passing short text messages.
  • Tim, KI6BGE, recommends Resonant Frequency, Linux in the Ham Shack, and SolderSmoke in his October 29 blog entry.

Announcements:

  • We received a donation from Paul during the last episode, and now Alex made a sizable donation. Thanks, Alex!

Links and Notes:

Music:

  • "Company of Fools" by Great Big Sea from the album "Fortune's Favour"

LHS Show Notes #025

Posted on by Russ Woodman

Contributors:

  • Paul, from TeenRadioJourney.com, mentions LHS on his blog.
  • Russ Wenner from The Techie Geek podcast joins us in the chat room.
  • Kent, VE4KEH, in a post in the forums, says he heard Russ on an episode of Hacker Public Radio, and wonders if an appearance on Linux Outlaws is next. He also asks about a Windows 7 launch party. Our hosts respond.
  • Kent also posts a comment in a thread about Acer dropping support if you install Linux on one of their computers. Kent asks which manufacturers are Linux friendly? He also wonders why Acer creates two partitions on their laptops.
  • threethirty from Linux Cranks sent congratulations about LHS getting a mention in an LXer.com article Ohio LinuxFest Report
  • Matt, KC8BEW, in a comment about Episode 22 asks if Chirp will support radios other than Icom D-Star.

Announcements:

Links and Notes:

  • Russ talks a bit about being at Ohio Linux Fest. He was in "podcasters row" in the exhibit hall, along with the Northeast Ohio Open Source Society, The Linux Link Tech Show, and the Security Justice podcast. Russ shares some interviews and audio he recorded:
    • Interview with Matt, KC8BEW.
    • Russ plans on taking Linux in the Ham Shack to Dayton Hamvention, 2010.
    • Jim, KB3ORA, stops by the booth.
  • Questions in the chat room:
    • Russ Wenner from the Techie Geek Podcast, asks: is ham radio an expensive hobby? Richard opines.
    • HamTests.net is a good resource. The European site is HamTests.co.uk.
    • Do you need to learn Morse code? Nope, but it's even more popular now.
    • Do you need a high antenna? Not necessarily. Russ discusses. The ARRL has several good books on antennas.
    • Paul Shirey asks if shared folders on different machines can be combined. Possible, but difficult.
  • Richard talks about APRS and XASTIR.
    • One of the requirements for using APRS under Linux is that you must have the AX.25 packet radio protocol support in the kernel.
    • To determine if your kernal has AX.25 support, enter this command in a terminal: 
      grep ax25 /proc/kallsyms

      If you get a result something like this:

      c0510ddc r trans_net_ax25_table
c05127a0 r trans_net_ax25_param_table

      then AX.25 support is built into the kernel. If you receive nothing, then you'll need to recompile the kernel with AX.25 support. (Most of the current versions of Ubuntu and Linux Mint have AX.25 support.)
      For more information, see the HowTo:AX.25 article on the XASTIR wiki.

    • Richard describes configuring XASTIR.
    • Bottom line: it's not all that hard to set up. Read the wiki. There are how-to articles for many different operating systems.
  • From the chatroom, someone asks about the throughput of the various data modes in amateur radio.

Music:

  • "Like This" by STEEP from the album "STEEP"
  • "Lost" by Trainlight from the album "Now You're Alone with Ghosts"