Pete Bates GM4BYF gave a very interesting talk, with audio examples, of the technique of communication by signal scatter from the underside of an aircraft flying between the two stations. He also showed a number of items of test equipment to enable this technique - frequency standard, frequency meter and spectrum analyser, which are now available at remarkably affordable prices.
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Airscout dynamic display showing the aircraft, identified by size and therefore usefulness for this technique.
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Pete played audio recordings, with signal strength displays of two aircraft scatter QSOs on 23cm.
Click for the recording of the G7LRQ QSO.
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QSOs with other stations located at distances up to 500km and screened by mountains, would not normally be possible without this technique.
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An aircraft Scatter QSO is scheduled in advance with the exact frequency specified.
CW can be used but Pete chose SSB as a more practical mode.
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Pete's test equipment to enable aircraft scatter communication: frequency standard, frequency meter and spectrum analyzer.
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Many thanks to Pete for a very well-prepared and presented talk.
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