1. Forum
  2. Usenet
  3. REC.RADIO.AMATEUR.DIGITAL

  • [G3XBM] 10GHz

    From G3XBM via rec.radio.amateur.moderat@21:1/5 to All on Sun May 30 00:47:29 2021
    XPost: rec.radio.amateur.moderated, rec.radio.amateur.space, uk.radio.amateur XPost: free.uk.amateur-radio

    Roger G3XBM's (Mainly) Amateur Radio Blog

    ///////////////////////////////////////////
    10GHz

    Posted: 29 May 2021 06:22 AM PDT http://g3xbm-qrp.blogspot.com/2021/05/10ghz.html


    As I have mentioned in the past, some take 10GHz operation very seriously, with big dishes, high power and receivers with really low noise figures.
    Well equipped stations can operate moonbounce on 10GHz.
    Others "play" at 10GHz, for example with low cost HB100 Doppler radar
    modules. With these low cost modules really no microwave engineering is
    needed. Some have covered 5km with WBFM with just these modules. Placed at
    the focus of a dish, over 100km has been covered on ATV with these modules.
    The modules contain 4 PCB antennas. 2 are for RX and 2 for RX.

    They can even by bought on Amazon. They are even lower cost on eBay. Their
    main application is Doppler radar, but they have been repurposed.
    I think there are similar units for 24GHz. These 24GHz units are on sale on Amazon, but I have not looked for WBFM designs using these. Just imagine, a very low cost microwave station!

    See
    https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/homebrew/10ghz .





    ///////////////////////////////////////////
    Help?

    Posted: 29 May 2021 04:26 AM PDT http://g3xbm-qrp.blogspot.com/2021/05/help.html


    This photo was taken in 2012 and shows one of our grandchildren "helping"
    me in the lab.
    He is now 13.


    ///////////////////////////////////////////
    10m FT8 RX (Saturday)

    Posted: 29 May 2021 09:18 AM PDT http://g3xbm-qrp.blogspot.com/2021/05/10m-ft8-rx-saturday.html


    Since before breakfast, I have been on 10m FT8 RX with the homemade 10FT8R
    RX and 50cm indoor loop. No spots yet at 0754z.
    UPDATE 0835z: No spots.
    UPDATE 1645z: No spots.
    At first, I just thought this was a bad day. Then I looked at G0LRD's
    spots. He has a better antenna, but he had 333 spots, whereas I have none
    at all!! I have closed the program and restarted it and re-synchronised the time. If it is not this, I am puzzled. I did a Windows update yesterday.
    Just going to retune the loop in case someone knocked it off tune.
    UPDATE 1650z: Just swapped to the FT817ND RX.

    ///////////////////////////////////////////
    Sunspots - Saturday May 29th 2021

    Posted: 29 May 2021 12:51 AM PDT http://g3xbm-qrp.blogspot.com/2021/05/sunspots-saturday-may-29th-2021.html


    Solar flux is 77 and the SSN 28. A=3 and K=1.

    ///////////////////////////////////////////
    Shack yesterday

    Posted: 29 May 2021 12:49 AM PDT http://g3xbm-qrp.blogspot.com/2021/05/shack-yesterday.html


    The photo shows the shack yesterday.

    I was monitoring 10m FT8 with the homemade 10FT8R RX on the left connected
    to the indoor loop which is about 50cm across and sits on the windowsill.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)