More Scatter on 6m

~ marconisparker

G4FFC lies due East of me. The main UK Air Corridor cuts our path approximately midway. He is there on 6m so an ideal chance to experiment.

In this Capture a single aircraft crosses our path, on frequency WSPR decoded without interference from the crossing plane. Poular oppinion has it that Aircraft Scatter will kill WSPR.

6mrefl-g4ffc

Early in this transmission a plane crossed the path followed by another which tracked our path closely for a long period before finally crossing and leaving. WSPR again managed to decode without problems.

g4ffc2

By beaming along the Corridor I reduced the direct signal from FFC to zero. I found an aircraft that produced a 60Hz straight shift. WSPR decoded at the shifted frequency. The aircraft must be at an angle to both stations that causes a shift that is related only to the speed of the plane, or on the East West route to Ireland which would place the aircraft perfectly aligned on our path and West of me. Some aircraft reflection from a plane crossing the path can be seen crossing the transmit frequency

capt0002

Tests will continue as time permits.

aircraft scatter,radar,six meters,6m,wspr,reflections,air corridor

5 thoughts on “More Scatter on 6m”

  2. hi well yesterday got interested in wspr,tried it on 10mhz with a rubbish vertical terrible vswr ,needs new caps[butternut]….5w on 10mhz sorta wspr qro i think.

    amazing copy on my tx but poor on rx ,must be telling me summat.

    for some time i have been wanting to use my sbs-1 mode s aircraft position reporting gear to do some aircraft ref on vhf, but beacons on 4m not being many in here proved nothing.

    partners are not easy to find but will do more soon i hope…….i know where the planes are circa 35k up and see em on radar scope im under the transatlantic airway [almost] with a good airway up to northern ireland too.

    im sure you are aware of kinetics sbs stuff it will take the guesswork out of when the next plane comes in a good direction……trail paths also can be shown making it easy follow approaching aircraft .

    this morning im on 6m wspr whilst waiting for 4m to do some magic…….being retired here in west wales enabled me to join the white noise watchers club but not sure if im completely raving mad yet!

    now must read all your posts ,need to learn, think this may be the latest fun thing for me…..having come from cw ms on 2m to data mode ms on 2m , 6m then 4m …all the many data modes on hf sure data modes have kept me going .

    best 73 geoff gw3lew pembrokeshire

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  3. Hi Geoff

    Thanks for your interesting comments.
    Yep there are lots of things to keep us interested in Ham Radio, no need to go on the local repeater and swear 🙂

    I gotta look into Kinetics SBS.

    I have worked Pembrokeshire on 6m WSJT6 via Tropo Scatter, or could that have been Aircraft Scatter? I just wonder if Slowfeld XPAS would make the trip via Aircraft Scatter.

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