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Thread: Simple, REALLY simple data mode software for a boat anchor rig with PTT jack?

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  1. #1
    Join Date
    Apr 2012
    Location
    Shropshire, England, UK.
    Posts
    243

    Default Simple, REALLY simple data mode software for a boat anchor rig with PTT jack?

    Wanting to have my first go at data modes on HF I am wondering if someone would recommend some rally basic and easy to use data modes software, bearing in mind it's for use with my old boat anchor Yaesu FT-902DM transceiver that switches the PTT via an existing USB interface that triggers a relay to drive the PTT, rather than plug and play control of more modern rigs? I can move on to something fancier in due course, right now I would like to get signals in and out as simply as possible to check all is working OK. Thanks.

  2. #2

    Post

    Ernie Mills, WM2U
    Sound Card Interfacing Schemes
    http://www.qsl.net/wm2u/interface.html

    USB-Link DIY build by G4ILO
    http://www.g4ilo.com/usblink.html

    Sound Card Interface with Tone Keyer by WA8LMF
    http://wa8lmf.net/ham/tonekeyer.htm

    http://wa8lmf.net/ham/tonekeyer.htm#schematic
    ===
    Software for various Digital Modes?
    http://www.qsl.net/wm2u/

    Here is the PSK-31 software page
    http://www.qsl.net/wm2u/psk31.html

    K1JT web page
    http://physics.princeton.edu/pulsar/K1JT/

    JT-65A Page
    http://hflink.com/jt65/
    Last edited by W9GB; 04-23-2012 at 11:09 PM.
    Nullius in verba

  3. #3

    Default

    Quote Originally Posted by 2E0ILY View Post
    Wanting to have my first go at data modes on HF I am wondering if someone would recommend some rally basic and easy to use data modes software, bearing in mind it's for use with my old boat anchor Yaesu FT-902DM transceiver that switches the PTT via an existing USB interface that triggers a relay to drive the PTT, rather than plug and play control of more modern rigs? I can move on to something fancier in due course, right now I would like to get signals in and out as simply as possible to check all is working OK. Thanks.
    That rig has VOX so if you want to keep things simple forget about using PTT.

    Really, really simple:
    1) Download Digipan, this is about the easiest to use digital modes software. Get familiar with it, point it towards your sound card.
    2) Get a mic for your PC and plug it into the mic jack of your sound card (not line-in).
    3) Put the mic near your rig's speaker with the rig tuned to the data mode sub-band of your choice.
    4) Bring up Digipan and you should see some decode of the signals coming over the speaker if you have things set right.
    5) Make a cable to go from your sound card speaker/output jack to your rig's mic audio input (you may only need a couple of wires to do this.
    6) Try transmitting (into a dummy load) using Digipan and adjusting your VOX settings.

    With the above no need to mess around with USB or serial interfaces, etc. Some ops never use their PTT for digi-modes, the VOX works great and it comes pre-isolated! Obviously using the mic subjects the input to background noise, but for starting out it will work fine. Alternatively, you could just put a jumper from your rig's headphone jack to the sound card.

    Good luck!
    [B][COLOR=#008000]vy 73,

    Casey, TI2/NA7U
    [/COLOR][URL="http://casimiro.hubpages.com/_QRZForums/hub/What-Can-You-Do-With-Amateur-Radio-The-Skys-The-Limit"]Amateur Radio: The Sky's the Limit![COLOR=#008000][/COLOR][/URL][/B]
    [URL="http://casimiro.hubpages.com/_QRZForums/hub/What-Can-You-Do-With-Amateur-Radio-The-Skys-The-Limit"][SIGPIC][/SIGPIC][/URL]

  4. #4
    Join Date
    Apr 2012
    Location
    Shropshire, England, UK.
    Posts
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    Default

    Thanks for the detailed reply Casey. I have managed to make a home brew second interface that makes the opto coupler in my commercially sourced USB interface trigger the 902DM PTT relay OK. Quite why the opto coupler won't do it directly, I don't know, maybe the 902 relay draws too much current for it? Anyway, it works OK now, and I have tried Digipan with some success. it was pretty intuitive to set up and use and i have made many successful contacts with it. I am now playing with fldigi and have that working too. thanks for the hints gentlemen, now up and running. i have another quick question, but will open another thread,. Thanks!

  5. #5

    Post

    Quite why the opto coupler won't do it directly, I don't know, maybe the 902 relay draws too much current for it?
    You need to look at the current and voltage specifications of the Opto coupler that you used.
    MANY must trigger an additional high-voltage/current transistor OR relay for older radios.
    Last edited by W9GB; 05-12-2012 at 02:30 PM.
    Nullius in verba

  6. #6

    Default

    Yes, Fldigi is the superior program, but takes just a little longer to learn. You might see if your rig is in the list for Flrig, too. I find it works well.
    [B][COLOR=#008000]vy 73,

    Casey, TI2/NA7U
    [/COLOR][URL="http://casimiro.hubpages.com/_QRZForums/hub/What-Can-You-Do-With-Amateur-Radio-The-Skys-The-Limit"]Amateur Radio: The Sky's the Limit![COLOR=#008000][/COLOR][/URL][/B]
    [URL="http://casimiro.hubpages.com/_QRZForums/hub/What-Can-You-Do-With-Amateur-Radio-The-Skys-The-Limit"][SIGPIC][/SIGPIC][/URL]

  7. #7
    Join Date
    Apr 2012
    Location
    Shropshire, England, UK.
    Posts
    243

    Default

    Getting to grips with fldigi and working fine, thanks guys. Only one issue, I lose the mouse pointer whenever I try and use digi mode on 10 metres. fldigi itself keeps running and I can use the key board to control it. i suspect it's a USB issue, as it's a USB mouse. I am really beginning to hae Windows and USB, the old true serial port was so much more robust. If this darned laptop had a serial port i would try a serial mouse.... Is this a known issue? I ONLY have this problem on 10 metres, only using digital modes, and it's totally repeatable. Thanks.

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