Jump to content
Ham Community
Sotabeams is proud to co-sponsor Ham Community and its members – keeping it free of advertising clutter – right up to the end of February 2020.

Say thank you by visiting their website or special Ham Community page.
  • Our picks

    • WSJT - Weak Signal Communication Software
      WSJT-X, WSJT, MAP65, and WSPR are open-source programs designed for weak-signal digital communication by amateur radio.  Normal usage requires a standard SSB transceiver and a personal computer with soundcard, or the equivalent.  SDR-style hardware including the SDR-IQ, Perseus, SoftRock, and FUNcube Dongle is supported by MAP65 and WSPR.  SimJT is a utility program that generates simulated signals for test purposes.  All of the programs are available free of charge, licensed under the GNU General Public License.  Installation packages for WSJT-X are available for Windows, Linux, and OS X; WSJT and WSPR have Windows and Linux packages, and MAP65 and SimJT are Windows only.    For further details about source code and operating systems, see the Program Development page.

      WSJT-X ("Weak Signal Communication, by K1JT") offers specific digital protocols optimized for EME (moonbounce), meteor scatter, and ionospheric scatter, at VHF/UHF, as well as for LF, MF, and HF propagation.  The program can decode fraction-of-a-second signals reflected from ionized meteor trails and steady signals more than 10 dB below the audible threshold.  WSJT-X incorporates nearly all popular capabilities of programs WSJT and WSPR, while adding comprehensive rig control and many other features.  Check theWSJT-X page and links therein for details about modes FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, and WSPR.  

      WSJT is the original program, first released in 2001.  Version 10 implements modes JTMS, FSK441, FSK315, ISCAT, JT6M, JT65, and JT4.

      MAP65 implements a wideband receiver for JT65 signals, optimized for EME on the VHF/UHF bands.  It can be used together with Linrad (by SM5BSZ) or with direct input from a soundcard or FUNcube Dongle.  The program decodes all JT65 signals in a passband up to 90 kHz wide, producing a sorted band map of decoded callsigns.  In a dual-polarization system, MAP65 optimally matches the linear polarization angle of each signal, thereby eliminating problems with Faraday rotation and spatial polarization offsets.  

      WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter." This program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands.  Users with internet access can watch results in real time at WSPRnet.  Version 2.11 of WSPR includes FMT, a package of command-line utilities that can help you make highly accurate frequency measurements without expensive laboratory equipment.  The WSPR mode is now included in program WSJT-X.

      SimJT generates JT65 and CW test signals with user-specified signal-to-noise ratio.  It is useful for testing the JT65 decoder and the relative capabilities of these two modes.
      • 0 replies
    • Virginia QSO Party 2020
      I'm wondering who is going to take part in the Virginia QSO Party... My little gang is, that's for sure. Last year was a blast, and the weather was perfect. Here's hoping the weather is good this year. This said, the band conditions on 20m and 40m, as I recall, were as bad as could be.

      Anyone?

       
      • 0 replies
    • TheNewHam
      Our very own @W4OLV has his own YouTube Channel that has a really fresh take on amateur radio. A must view!!
      • 0 replies
    • Log-Periodic Dipole Array Calculator
      Calculator to be used when constructing a log periodic antenna. By Serge Stroobandt, ON4AA and Michael McCue, W7YZT - Copyright 2014–2018, licensed under Creative Commons BY-NC-SA
      • 0 replies
    • Hamvention 2020
      The reference amateur radio event is Hamvention and in 2020, Ham Community will make its first visit with our very own booth (booth # TBA). We hope that you will join us and remember, all booth visitors walk away with one of our unique, double sided, ham band plan!

      Hope to see you there and, of course, use the link on this page to go right to the Hamvention website.






      Website:
      https://hamvention.org






      Email for information: tickets@hamvention.org






      Club: Dayton Amateur Radio Association






      On site testing?: Yes






      Conferences / Workshops?: Yes






      Flea market: Yes






      Indoor / Outdoor: Indoor,Outdoor






      Cost: 26






      Ham Community attending?: We will be exhibiting,We will exhibit indoors



      • 0 replies
    • HamCation 2020... done
      HamCation 2020 was our first large hamfest. We are told that we did well; what's sure is that we're happy. We met some amazing people and signed up plenty of new members. We also entered into some really exciting partnerships that you will be hearing about soon. And yes, we will be back at HamCation next year, hopefully in the exact same spot.
      • 4 replies
    • You need to look at your available bandwidth for connecting to the digital network of your choice. DMR does require about double the throughput bandwidth of D-STAR due to the inherent coding (DMR is a ~9600 baud throughput while D-STAR is about 4800 baud). Fusion is dependent on the mode you are using and can vary. Fusion has become popular because Yaesu seeded the market with low cost repeaters and many clubs jumped on the bandwagon hoping to replace agin repeaters at a bargain price. The initial entry into the Fusion environment had its startup problems and now after a few years of operation, the Fusion product/protocols are well established  and the networking issues have been worked out.

      With the advent of the newer hotspots which support multiple modes, the choice of what type radio is pretty much up to you and who you wish to QSO with. Many of the newer hotspots allow you to utilize a feature called "cross-mode" where your radio can be DMR and you can "cross-mode" to Fusion or NXDN. The newest hotspots can actually "cross-mode" to any and all of the modes from any other mode! This feature (software magic) has made the choice of which mode (and by association- the choice of radio) a moot point. Obviously, each OP will have personal brand choices for many reasons, but you are now able to join any network with almost any radio.
        • Like
    • W4KRL Puzzle
      Feel like learning a little something while having a little fun? Check out the W4KRL Puzzle and let us know what you think!
      • 0 replies
    • Anyone else studying for the Extra Class exam?
      I studied hard last fall but wasn’t passing my practice exams by the week of the exam so didn’t go.  Then the holidays came around.  Now, I’m wanting to get back into studying and hoping I didn’t forget what I had learn so I can take the exam in March.

       I have no background in electronics so this is a challenge for me, for sure.  I’m using an extra class app on my phone, the arrl extra class book, and the study book by Gordon West.

      Anyone else out there hoping to upgrade this year?  And any words of advice?
      • 5 replies
    • Thank you Frostfest




      Blog post category: About the Community




      Frostfest 2020 has come and gone. RATS did a great job, thank you to the whole team. Early on, the line went as far as the eye could see and, from all appearances, lots of money changed hands. One of the highlights of Frostfest was when one of the announcers came on and told us that someone had lost over $500 in cash. The great news is that somebody else – an honest soul – found that money and brought it to the front office.

      As for Ham Community, we were very pleased to make some fantastic contacts with over 60 new members registering on site. Our new band plan was also very well received. We, of course, look forward to comments and corrections so that we can make this the most useful band plans possible.

      Next it's on to Orlando for HamCation 2020. We hope you will all join us there; we will be in Booth 099.
      • 2 replies
  1. CONNECT BY STAGE

    1. Studying & licensing

      No matter where you are studying or what license you're after, help is available.

      28
      posts
    2. 23
      posts
    3. DIY - From scratch and kits

      From the smallest kit to the largest transceiver... we love building

      7
      posts
    4. 30
      posts
    5. 39
      posts
    6. Contesting

      General contesting discussions, not discussions about specific contests. Look in the calendar section for specific ones.

      10
      posts
  2. CONNECT BY SPECIAL INTEREST

    1. Emergency communications

      From preparedness to deployment

      47
      posts
    2. Public Service Events

      All about working with, improving upon, or otherwise participating in public service events such as races, fairs, etc.

      13
      posts
    3. Repeater management

      if you manage a repeater, this is a great place to ask other repeater admins for advice, or to give some...

      8
      posts
    4. Electronics & electromagnetism

      For those interested in the fundamentals of amateur radio

      4
      posts
    5. Nets

      General discussions about local, traffic, weather, HF, etc. nets

      12
      posts
    6. Nostalgia & History

      There was some good stuff happening in the good ol' days of Amateur Radio.

      15
      posts
    7. Research & development

      Scientific research and laboratory and field testing

      6
      posts
    8. Scanning & Short Wave Listening

      Anything to do with scanners or shortwave reception activities

      1
      post
    9. FCC, ITU, IARU and official policy discussions

      Discussions related to the U.S. FCC or to international and national regulatory bodies and policies around the world

      7
      posts
    10. Organizing an event

      Discussions about organizing events, DXpeditions, contests

      3
      posts
    11. Planning an outing

      Are you looking for friends to go operate? Planning on a small field trip and there's room for more people? Ask away.

      • No posts here yet
    12. Activations

      For all those of us who love to climb, travel and otherwise activate the most amazing places

      10
      posts
  3. EVERYTHING ELSE

    1. 37
      posts
    2. Great QSOs

      Tell us about a great QSO you had just now, or even decades back. We'd love to hear all about it.

      5
      posts
    3. Post your videos

      Embed your how-to, review, outings videos and let's discuss them.

      4
      posts
    4. Self-promotion

      Did you write a book? Did you invent a new piece of gear?

      3
      posts
    5. First QSO

      Welcome new members. Ham Community is happy to have you.

      511
      posts
    6. 26
      posts
    7. About Ham Community

      Discussions about the community itself, its functionality, ideas you have...

      8
      posts
  4. CONNECT BY GEOGRAPHY

    1. 14
      posts
    2. 2
      posts
    3. COUNTRIES

      These country-based forums are to discuss with other residents or for non-residents to discuss a country-related topic. Not all countries are listed yet. If you would like a country to be listed, open a new support request here.

      4
      posts
    4. 12
      posts
  5. SOLVE DIFFICULT PROBLEMS

    1. The Elmers' Circle

      The Community is fortunate to have Experts and Elmers who can help out. You can post your question here. If it is accepted, Elmers, and other advanced members, will intervene.

      • No posts here yet
×
×
  • Create New...