22nd January 2020 – Aircraft Scatter Communication & Useful Test Equipment for It – Pete Bates GM4BYF

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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Ray James GM4CXM gave a talk on 70cm and 23cm on 9th March 2011 in which he described his work with aircraft scatter, but there are only one or two slides about it. (Click).

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