Kenwood TS520S PSK 31 Setup Procedures

Discussion in 'Working Different Modes' started by WA4ALA, Oct 16, 2010.

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  1. WA4ALA

    WA4ALA Premium Subscriber QRZ Page

    First of all, let me say I am a PSK31 absolute newbie. That being said, let me give a brief overview of my present PSK31 setup. Along with the above mentioned TS520S, I have A Rigblaster M4 and a Dell Laptop.
    So far, I have been able to receive PSK31 signals with great success, but for some reason, I cannot transmit.
    1. I have the Rigblaster setup and have arranged the jumpers as shown in the diagram in the owners manual.
    2. I have linked the Rigblaster to my PC via the RS232 cable.
    3. I have interfaced the Rigblaster with both my sound card and the 520S speaker output.

    When I turn on the PC and initiate DigiPan, it comes up and the "digital' light on the Rigblaster illuminates and I can see PSK31 signals on the waterfall and read them clearly.

    When I type a message and hit send, or just send CQ, nothing happens, ie the 520S does not switch into transmit mode.

    What am I doing wrong? Are there special jumper assignments for the 520S that are not shown in the owners manual.f Do I have a setup error?

    I apologize for these lengthy questions, but I am really frustrated with this problem, and I hope some fellow Amateur can help.


  2. VE3PP

    VE3PP XML Subscriber QRZ Page

    Although not familiar with your Rig Blaster set up, is there a PTT line in the cable from the interface to the rig?

    If not maybe try putting the rig on VOX and see if it transmits.

    Something has to key the rig.
  3. WA4ALA

    WA4ALA Premium Subscriber QRZ Page

    Found The Answer

    In brief, put the TS520S in VOX and put the Rigblaster in VOX. It works!!

    Thanks for all the help.

  4. VE3PP

    VE3PP XML Subscriber QRZ Page

    Michael I am glad you have it working. Maybe we'll cross paths on one of the digital modes. Olivia on 40 and 80 is one of my favorite modes.
  5. W3JRZ

    W3JRZ Ham Member QRZ Page

    If you are using a serial port to control the mike transmitt button, you must select the correct port number. This took me some time to figure out myself.
  6. WA4ALA

    WA4ALA Premium Subscriber QRZ Page

    Many Thanks

    I do appreciate all the help extended to me by all whom responded.


  7. WS2L

    WS2L Guest

    When operating in the digital modes remember that you are running "Full Duty Cycle" and you should use the least amount of power necessary to make contacts. If you run full power your rig is going to get mighty hot and you will damage the tubes. The average output power on PSK31 should be no more then 30-35 watts. That power level is pretty standard when operating this mode and with my TS-480 I only put out 50 watts maximum.
  8. M0WAN

    M0WAN Ham Member QRZ Page

    I also use a 520 for digital modes.

    Points to watch, as you say you are new to it:
    (I'm assuming you know how to correctly tune the rig before use - this is critically important.)

    Turn back the bias using the appropriate control under the left side panel to about 30mA - measure this with IP selected, and send in USB mode. There is no detectable increase in intermod products running at the level I recommend.

    Monitor 'IP' and don't go above 100mA during transmit - much more and you may overheat the final compartment.

    Keep plenty of room available at the back so that the fan can move all that hot air out of the unit.

    Ensure the processor switch is pushed in (Off) and keep your hand on it ready to adjust the level of the Mic gain - I find that changing the audio frequency input can change the output power quite a bit, so after changing position on the waterfall be ready to adjust levels to get that 100mA again. The needle will wobble about a bit, but we're looking for an average.

    Finally, were you aware that there are audio in, and audio out phono sockets on the back? I just direct connect to PC, the levels are about right for digital modes. You'll need VOX of course. :)

    Have fun, and maybe I'll hear you on 40m one evening.
  9. WA4ALA

    WA4ALA Premium Subscriber QRZ Page

    How do you connect between your PC and the TS520? Do you use a rigblaster or do you just directly connect your PC to the 520?


  10. M0WAN

    M0WAN Ham Member QRZ Page

    I connect directly.
    The audio out (record) phono socket on the back connects direct to the line in of the soundcard. The rig's volume control affects the level of the sound, so is useful for adjustment.

    The output of the soundcard goes straight into the audio in phono socket, with the level being controlled by the mic gain.

    I recommend setting the levels on the soundcard to about half way.

    Obviously you will have to make up the 2 specialised cables, but as a ham, I'm sure you can do that. :)
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