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  • [G3XBM] 24GHz WBFM

    From G3XBM via rec.radio.amateur.moderat@21:1/5 to All on Wed Sep 29 02:42:02 2021
    XPost: rec.radio.amateur.moderated, rec.radio.amateur.equipment, uk.radio.amateur
    XPost: free.uk.amateur-radio

    Roger G3XBM's (Mainly) Amateur Radio Blog

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    24GHz WBFM

    Posted: 28 Sep 2021 01:16 PM PDT http://g3xbm-qrp.blogspot.com/2021/09/24ghz.html


    This is a band I have never tried. Some people take it very seriously and employ narrowband techniques. Others "play" at the band using wideband FM (WBFM), much as is done with 10GHz.
    There are Doppler radar modules available which look as if they could be
    used at 24GHz. With such units there is almost no need for microwave engineering.
    With such units at the focus of dishes, ranges could be surprising. I have never seen designs for 24GHz WBFM units. If you find any, please send me
    links.
    Ranges of a few kilometres might be possible with just the modules alone.
    See
    https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/homebrew/24ghz .

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    10m FT8 RX (Tuesday)

    Posted: 28 Sep 2021 02:17 PM PDT http://g3xbm-qrp.blogspot.com/2021/09/10m-ft8-rx-tuesday.html


    F2 DX coming through from all over today. It is now 1430z and 62 stations spotted from all over the place on 10m FT8 RX.
    UPDATE 1940z: So far today, 229 stations on 4 continents spotted on 10m
    FT8 RX.
    UPDATE 2023z: It has been quiet on 10m for some time now, suggesting the propagation has ended. QRT soon.
    UPDATE 2118z: QRT.

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    Sputnik TX

    Posted: 28 Sep 2021 12:50 AM PDT http://g3xbm-qrp.blogspot.com/2021/09/sputnik-tx.html



    According to my Facebook memories today I was using a Sputnik QRP TX built
    by G6ALB 10 years ago. See the photo. I was surprised to get a QSO so soon after its completion. I think I was chief operator as I could use a CW key!


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    Sunspots - Tuesday September 28th 2021

    Posted: 27 Sep 2021 11:14 PM PDT http://g3xbm-qrp.blogspot.com/2021/09/sunspots-tuesday-september-28th-2021.html


    Solar flux is 85 and the SSN 30. A=7 and K=2.

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