Tag: wspr

LHS Episode #051: Careless WSPR

Posted on by Russ Woodman

A short while ago, Canonical released the latest version of Ubuntu:  the fabled Maverick Meerkat, 10.10. This is the latest in Ubuntu's normal release cycle and is not LTS. I had occasion to upgrade a couple of my personal computers running Ubuntu to the wily Meerkat. Find out what's new in 10.10, and what's old, in the first segment of LHS #049.

After that, Richard and I tackle the WSPR protocol for ham radio again. When it was discussed the first time around, neither of us had much of an idea what it was or how it worked. Armed with a broader understanding and a lot more experience, we talk about what works and what doesn't work with WSPR, how to get it up and running on your system and what we like and don't like about it.

Following that it's on to witty banter, a passel of badgers, some hijinks, censorship, feedback and more entertainment than you can shake a wet hedgehog at. Thanks for tuning in. We love you all.

73 de The LHS Guys

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LHS Show Notes #048

Posted on by Russ Woodman

Feedback:

  • John, KF6EFG, commenting on the OGG vs. MP3 debate in episode 43, agrees that MP3 is the preferred file format because that it is supported by most media players. He realizes that OGG is superior, but until vendors like Apple support it, it will not gain on MP3. Richard thinks it's because Apple cannot add DRM to OGG files. Russ thinks that if Apple did use OGG, they'd sell more iPods. In any case, LHS will not drop the MP3 feed.
  • Lief, KC8RWR, writes a detailed reply to comments Randall, KC4WZE, made in episode 44 about running the same applications on cell phones and computers. There is a way to hack an Android phone to run Debian, or run Android on your desktop. Check out the TuxPhone project. Richard and Russ discuss.
  • John, EI7IG, was interested in the discussion of Logbook of The World in episode 43. He pointed us to www.rickmurphy.net/lotw for a newer version of TrustedQSL created by Rick Murphy, including a Linux version. Russ tried it and it works. (Ed. note: The softare is no longer available on Rick Murphy's site. Evidently, it has been obsoleted by Trusted QSL 1.13 from ARRL. Linux source packages to compile the library and program are available from the LoTW Instructions page.)
  • David, M0DCM, writes that he was recently at the Telford Hamfest and found that Linux was represented there, thanks to the Shropshire Linux User's Group and MAXPAK, the Midlands AX25 Packet Radio User Group. They had demonstrations of Linux machines running Fldigi and WSPR, showing just how far Linux has come. They gave away a bunch of Ubuntu CDs, some to LHS listeners! (A couple UK podcasts for ham radio and Linux are the ICQ Podcast and the Ubuntu UK Podcast.)
  • Russ was at the Joplin ARC Hamfest and had the LHS booth there. He gave away 20 Ubuntu 10.04 CDs. WebSDR was a big hit, too.

Announcements:

  • May 6-7, 2011: MAGNet Conference in St. Louis, MO. See magnetcon.info for information. If you know anyone that might be a sponsor, exhibitor, or speaker, please let us know. Application forms are available on the web site. Registration will begin December 1, 2010. There will be a live music concert and coctail hour at the close.
  • Links to LHS merchandise have been added to the LHS website. Click the SHOP! link under the banner.

Topics:

  • Websites of interest:
    • Ubuntu Linux for Hams, by Bert, AB0VI, was featured on the main ARRL web page.
    • My Ham Shack provides a free personal web page for ham radio operators. Lots of guys post pictures of their shacks, QSL info, equipment list, etc.
    • It's More Complicated Than That!. A blog by one of the Ubuntu developers, Steve Conklin, AI4QR. Recently, he's been working on controlling a Softrock software defined radio (SDR) with Linux.
  • Linux ham software:
    • More ham radio applications are showing up in the Linux repos, like PSKmail, bulletin board programs, and more. Richard begs for someone to update the 2001 Linux Amateur Radio AX.25 HOWTO.
    • CallGit, a callsign lookup tool that retrieves data from QRZ.com.
    • gPredict, a real-time satellite tracking and orbit prediction program.

Contact Info:

  • Contact Richard at kb5jbv@gmail.com, Russ at k5tux@lhspodcast.info, or both at the same time at info@lhspodcast.info.
  • Listen to the live stream every other Tuesday at 8:00pm Central time. Check the LHS web site for dates.
  • Leave us a voice mail at 888-455-0305 or 417-200-4811, or record an introduction to the podcast.
  • Sign up for the LHS mailing list.
  • Thanks to Dave from Gamma Leonis for the theme music.

Music:

LHS Show Notes #030

Posted on by Russ Woodman

Contributors:

  • Walter, WN3LIF, writes to express his appreciation for the podcast. He has successfully interfaced his FT-450 to his Linux Mint system.
  • Terry, KV6M, alerted Richard to a link spam entry in the forums at blacksparrowmedia.com.
  • Bob, VE3SRE, recently found the podcast, and has been a user of GNU/Linux for many years. He's found a good contest logging program, but neglected to mention which one. Let us know, Bob!
  • Paul, KC9QYB, of teenradiojourney.com, Kent, VE4KEH, and Bill, KA9WKA, join the roundtable discussion this episode.

Announcements:

  • Check out Russ on Hacker Public Radio! In episode 0494, Klaatu interviews Russ at Ohio Linux Fest.
  • Another generous donation came from Jim, W9GNG. Thanks very much, Jim! LHS is well on the way to their goal for sending Richard and Russ to the Dayton Hamvention 2010! If you'd like to donate, click on the Donate button at the Linux in the Ham Shack website.

Links and Notes:

  • The ARRL has an article about Senate Bill 1755 being passed in the Senate and now moves to the House of Representatives for consideration. A roundtable discussion ensues.
  • Kent, VE4KEH, joins the roundtable to discuss WSPR (Weak Signal Propagation Reporter), written by Joe Taylor, K1JT. See also the WSPRnet page for recent observations.
    • When you install the .deb package, it may not create a desktop icon. The program installs, by default, into the /WSPR directory. So, you may need to run it by doing the following in a terminal window: 
      		$ cd /WSPR
		$ ./wspr
    • Of course, you'll also need a soundcard interface to your radio. Once running, you should go to the Setup -> Station parameters menu option and enter your callsign, grid square, transmit power, and set your audio device and rig control preferences.
    • It can even be used on the experimental 600m band, if you have a license to operate there. On July 28, 2009, the FCC granted the ARRL a modified license for WD2XSH. This modified license allows the experiment to operate with 45 stations across the continental USA, Alaska, and Hawaii. So, unless you're one of the stations specifically authorized to operate on 600m, you should only provide reception reports, and not transmit on that band.
    • One final note about WSPR: you must have your computer clock set very accurately. The easiest way is to set up an NTP client on your computer to synchronize your computer clock to one of the network time protocol servers. Here is an article on setting up a Ubuntu client, which should also work for Linux Mint. Or...
    • If you RIGHT CLICK on your desktop clock and select "set date / time", there may be an option to automatically set the time. You can select the ntp.ubuntu.com server so you don't overload the public servers.
  • Paul recently built a Pixie II QRP CW transceiver kit.
  • Bill Meara, M0HBr/CU2JL/N2CQR, of the SolderSmoke podcast is also a fan and practitioner of WSPR.
  • Bill, KB3CVA, has a telnet BBS online at https://phantombbs.net.
  • Russ discusses a gizmodo article about Microsoft patenting the sudo command. It's not likely that the patent is enforceable. Don't Panic. 🙂 Articles on ars technica and Information Week have a more realistic slant on the issue.
  • Tip: to eliminate having to enter your password each time you use the sudo command:
    • First, edit the /etc/sudoers file using the visudo utility. It is considered insecure to tweak the /etc/sudoers file manually.
      • 		$ sudo visudo /etc/sudoers
    • Uncomment this line by removing the # character: 
      		# %sudo ALL=NOPASSWD: ALL
    • So it now looks like this: 
      		%sudo ALL=NOPASSWD: ALL

      and save the file.

    • Finally, add your user name to the sudo group. For example, to add user russ to the sudo group: 
      		sudo usermod -a -G sudo russ
    • Log out and in, and enjoy sudo without the password prompts.
    • Of course, if you just want to avoid repeatedly typing your password for a session, you can issue the command: 
      		sudo bash -

      which will give you a bash terminal session as root, and you can then issue several commands as root without the need for typing sudo at all.

  • Debate in the chat room about cell phones and emergency communications. Richard talks about the cell phone problems during hurricane Katrina. Most cell phone systems are designed to support about 20% of their subscribers at any given time. When an emergency occurs, the cell phone networks are quickly overloaded.

Music:

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LHS Episode #030: Whispers and Warnings

Posted on by Russ Woodman

We've reached the end of the decade. 2009 is just about over and 2010 is just about to swoop in and overwhelm us all. It's been a fantastic year here at Linux in the HAM Shack, and we'd like to thank all of our listeners and sponsors who make the show possible. Without you, we would literally be nothing.

Hopefully everyone has enjoyed their holidays, spent time with families, given and received all of the gifts you've hope to give or receive. Warmest wishes from our homes to yours during this time of friendship and togetherness, and please accept our gift of a new podcast to take you through the rest of this special time and into the upcoming new year. May it be more prosperous and fulfilling than the ones that have come before.

73 and Happy Holidays,

Russ (K5TUX) and Richard (KB5JBV)

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