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Hello Folks The GB3MBA receiver live stream at https://ukmeteorbeacon.org/beaconclient/ now has a third receiver at my NW Hampshire location as client 6 marked as Test Stream ( ignore the co-ordinates as they are still for the Much Wenlock receiver. The antenna for client 6 is pointing vertically up and is positioned "end on" to the beacon to minimise any direct signal. I will run with this set-up for a few days as we approach the Perseids. Some sample images are attached. Meanwhile the live stream with sound can be found at https://batc.org.uk/live/gb3mba . This will be ON when the equipment is available so may be OFF at times. Screenshot 2024-08-10 165035.png is from the BATC stream. Brian

Hello Folks You might like to pass on the following to any Astro Societies or individuals interested in Meteors. I attach the text as a .pdf to make that even easier to do. All the best Brian Perseids and the UK Meteor Radar Project The UK Meteor Beacon has been operational since May 2022 enabling anyone with a suitable receiver to detect and study radio echoes from meteors entering the earth's atmosphere over a large part of the UK. The Beacon Transmitter is located at the Sherwood Observatory of the Mansfield and Sutton Astronomical Society. The second phase of this project has been to establish a network of receivers accessible via the internet for anyone to study meteors without the need for their own dedicated receiver. “The UK Meteor Radar Project” is a Bi-Static radar to study meteors. Receivers in the network stream their data to a central server which users can access. Up to 6 receivers are displayed at https://ukmeteorbeacon.org/beaconclient/ . Details of how to use the display can be found at the project web site:- https://ukmeteorbeacon.org/Home see “Observing GB3MBA” and the live displays are explained at https://ukmeteorbeacon.org/Documents2List . Select “Using the Live Streams”. We aim to maintain the live stream at https://ukmeteorbeacon.org/beaconclient/ 24/7 and during the Perseids this August we will provide an additional stream which has greater bandwidth and includes sound. This can be viewed at https://batc.org.uk/live/gb3mba. Again the “Using the Live Streams” document explains the display. Individuals or societies observing the Perseids will find these live streams of radio echoes a useful addition to their optical observations. The radio echoes can be viewed by day and night and in all weather conditions.

Hello Folks I had promised to stream a receiver to YouTube during the period around the time of Perseids. This is proving to be tedious in a development environment when bench space, PC, antenna time etc are required for other things as switching ON a you tube stream after it has been interrupted is a chore. However the same data can more easily be streamed to the BATC Streamer which can be found at:- https://batc.org.uk/live/gb3mba. I will try to keep this stream on for a day or two either side of the Perseids peak. I'll be working on that being about the 11th to 14th August but If anyone has a better suggestion for dates please let me know?. Meanwhile the 6 receiver live stream at :- https://ukmeteorbeacon.org/beaconclient/ is operating 24/7. If anyone would like the stream to be ON at a particular time, perhaps for a demonstration or other event, please let me know and I'll do my best to make it available. The 6 receiver live stream has been updated recently with improved colours and brightness resolution. As we approach the Perseids there are lots of interesting echoes to be seen at https://ukmeteorbeacon.org/beaconclient/ particularly in the morning. Three examples are attached. Brian

For the time being I have increased the displayed bandwidth to YouTube stream at https://www.youtube.com/watch?v=82S2FvYBylc to +/- 2.5KHz. This brings the timing pulses into view. These injected at the front end of the receiver to enable us to overcome latency through the receiver, the internet and the Server when we come to making detailed analysis of the echoes. With this bandwidth shown on the screen we loose some resolution of the echoes. Let me know what you think please. I will change back to +/- 500Hz later today. Brian

These screenshots show two events captured yesterday The first is of interest because the tail echo was seen by all 5 receivers so was not directional or linearly polarised ... the beacon illuminates the region where meteors burn up with Right Hand Circular polarisation RHCP. The second image shows a tail echo seen by the Norman Lockyer Observatory and NW Hampshire but only with vertical polarisation indicating that this echo was linear polarised. When a signal is reflected from a plane ( mirror like ) surface circularity is maintained but reversed from Right Hand to Left Hand. So in the second image it appears that some RHCP energy is being collected by a cylindrical or wire like reflector which radiates the energy with linear polarisation. This tells us something of the shape and dimensions of the reflecting region. When a linear antenna receives a CP signal there is a loss of the order of 3dB compared to using a correctly polarised CP antenna for receive. Brian

Would anyone like to interpret this interesting echo. Observed from NW Hampshire it is mainly horizontally polarised. Armagh sees the same echo with it's horizontally polarised antenna. The Norman Lockyer Observatory sees something quite different. Note the differences in frequency / Doppler shift.

Here are the same echo seen in NW Hampshire by the live stream and by another receiver at NW Hampshire running SDR Console with a greater bandwidth and faster waterfall. This illustrates the greater detail that it is possible to capture with a faster waterfall. The live stream waterfall lasts about one minute and has +/- 100Hz bandwidth the SRD Console waterfall lasts about 30 seconds and has +/-500Hz bandwidth. With a fast waterfall it's much harder to capture events manually as these were, we are working on capturing events automatically with a much faster rate than can conveniently be displayed. Data will be transferred from rolling buffers to more permanent memory for later analysis when significant events are seen. The embedded timing, not shown here, will enable events to be correlated. B

A fairly quiet day in respect of Solar Flares with one M class flare from AR13697. I normally monitor GQD and DHO. GQD has been down for a few day so relying on DHO for my daily dose of VLF observations. The M6 flare had timings of Start: 1450 Peak:1506 and End:1522 according to SpaceweatherLive. My timings were slightly out as this is a secondary observation but the weird thing is I can see a blast of interference from GQD (or something close) at exactly the same time. Did anyone else see this or can explain what is going on? The spikes at 1700 are typical and fairly normal here. Something obviously being turned on r off. The step effect is caused by my freezer cycling on and off.. Thanks -- -- Martyn

There are lots of interesting echoes at present showing different directional and polarisation properties along with big spreads of Doppler in the tails and strange shapes. Here's just one example. We'd love to hear your thoughts and see your example screen shots. The Norman Lockyer Receiver will be off line from time to time while electrical works are carried out at the observatory. Brian

Hello Folks A lot of echoes lately . How about some of you watching the display for a few minutes a day, preferably in the mornings and providing a meteor count and perhaps your own image of the day along with your conclusions/observations. Of particular interest are the directional nature of the echoes at this 6m wavelength. This infers the shape and dimensions of the reflecting body which is also suggested by the "strength" of the linear polarisation. The different Doppler shifts observed from different directions, when multiple observations are available, also infers location and trajectory. Such observations are highly subjective and do not offer precision. When we are able to offer the raw receiver data with increased bandwidth and precision timing more objective conclusions may be possible. In the mean time here are two images snapped this morning. Lets see some from you.. Go to https://ukmeteorbeacon.org/beaconclient/ and see for yourself remember mornings UK time are best as the UK faces into our direction of travel around the sun. Brian