24 kHz CW Skimmer with the Icom 7610 | How To


I'm an Amateur Radio enthusiast. I love the hobby and experimenting with radios, antennas and software. On my YouTube channel I upload videos on the Icom 7300 and Icom 7610 along with Ham radio software programs. I hope to inspire people to try new things in Amateur Radio.

8 Responses

  1. Ivars says:

    Hello Rich
    I finally have HDSDR and CW Skimmer working with my IC-7610. My WIndows 10 Lenovo computer and HDSDR did not see the new com0com ports. Finally I removed com0com and loaded Null Modem Emulator by Eitima and no problems assigning two new ports for HDSDR. Also CW Skimmer did not have 7610 in CAT setting so I stayed with “Kenwood: and the “flicker” freq readout
    Again MANY Thanks

    • K0PIR says:

      Hi Ivars,

      Nice to hear from you and thank you for commenting.

      I just started using Eitima on my new laptop and I am glad you like it. I have no used it much, but it’s a nice program.

      You may have an older version of OmniRig and that’s why the IC-7610 doesn’t show up. If you install the latest it should work FB.

      Thank you again and CUL.

      Rich, K0PIR

  2. Jarkko says:

    Hi Rich,

    I have set all this up and it’s working fine. However my HDSRD has no I/O gain selection available, so can’t make minor tweak to CW skimmer. Have you faced this? Is there some other setting which prevents adjusting the gain?

    Jarkko, OH6NEQ

    • K0PIR says:

      Hi Jarkko,

      Nice to hear from you and thank you for commenting.

      Yes, it happens to me. Open HDSDR, start it, click on Options>Output Channel Mode RX and select “IF as I (Left) / Q (Right)” again. After selecting it again the slider should show up.

      See if that works.

      Rich, K0PIR

  3. Tom Johnson says:

    Have you explained how to setup CWS with the IC-7300?

  4. K0PIR says:

    Hi Tom,

    Nice to hear from you and thanks for the comment.

    I have not. I got HDSDR going with the Inrad RX7300 and SDR dongle, but never did attempt CWS.

    I hear people have done it.

    You might want to check the Icom 7300 forum in Groups.io. I know they were discussing it a while back.

    Rich, K0PIR

  5. Richard says:

    Hi K0PIR,
    RE: Frequency is flashing in CWS.

    For me I found that instead of using Kenwood, the flashing stopped if I configured the Cat Interface to use “ZS-1”.

    73 de AI4Y

    • K0PIR says:

      Hi Richard, nice to hear from you and thank you for posting the information. That’s great! It bugged me a little bit.

      This will help others as well, so thank you again.

      Best 73!
      Rich, K0PIR

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