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This echo was probably from a larger meteoroid by which I suggest bigger than a grain of sand because it has a very distinctive head echo. We hope that the head echoes from still larger meteoroids /meteorites will be receivable from multiple directions. If so maybe triangulation of the meteor location and trajectory will be possible using Doppler measurements along with the precision timing embedded in the data each receiver send to the project server for recording and analysis later.

Brian

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Looks like a match ! We are making some changes to the live streams and I may be able to allocate receiver 6 to monitor GRAVES or BRAMS or VVS from time to time.

Receiver Numbers at? ? are :- Top Left to right 1,2,3 and bottom row left to right 4,5,6.? The Malvern receiver is no more but will probably be replaced by an experimental receiver eventually.

?

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Hello Mike

I can't see the time stamps on your image. The start of the echo on the Meteor Echo of the day would appear to be about 09:08:23? being about 50 seconds before the image time stamp that corresponds to the top of the screens.

Brian

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Hello Folks.? How many of you spotted that for the last few weeks the Norman Lockyer Observatory had become the Normal Lockyer Observatory. This typo crept in while work was being done on the server software which is being changed so that the receiver ident information can be changed locally when we move or re-direct a receiver. We might for example re-direct one of the receivers to BRAMS, VVS or Graves from time to time. In the mean time? here's a candidate for meteor echo of the day. Please feel free to post your own.

?We have established a gallery of exotic echoes at . Please feel free to add your own screenshots of the GB3MBA live streams.

All the best

Brian

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Hello Tony

I think the convention is to use horizontal polarisation but whether H or V or something in between some echoes will be attenuated as at 6m they are often randomly, linearly polarised despite the illuminating signal being Right Hand Circular Polarised.

Good luck Brian

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Happy New Year. This morning the UK meteor radar project live stream at ? ? is seeing many exotic echoes such as this example.

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Hello Mike

I am not? disputing that meteors over the UK can be detected by the GRAVES emissions. What I am saying is that the means by which the radiation from Graves reaches the region is not as obvious many believe.

The Graves antennas appear to be at ground level and beam up at an angle so the rear lobe heads into the ground. Any "side lobes" are so low down that they probably cant be the source of such a strong "direct" signal. So a possible source of the very strong signal that I see directly from GRAVES could be backscatter from the troposphere and it is likely that this is the source of illumination of meteors to the North.? This is not a reliable point source. In any case, why not use a system that provides defined coverage above the UK when one is available and even if you can't make your own receiver you can use the live streams at .

Here's a screen shot taken just now showing the very strong "direct" signal from GRAVES along with a meteor echo or two and one or more Starlink satellite echoes.

Brian