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Frank Hyde’s radio astronomy book is online: https://archive.org/details/RadioAstronomyForAmateurs/page/n13/mode/2up This book was published in 1962: I have the 1965 edition which prompted me to build a Kooman array at school, courtesy of the woodwork teacher. It was mounted on the roof of the gym with a very (too) long feed to the physics lab. The receiver was an old valve VHF TV tuner plus the 5-stage amplifier on p187. Made a good oscillator! There's also a short film of his observatory here http://www.eafa.org.uk/catalogue/215587 PS Thanks for the invite. MartinRH

Dear Colleagues, Being a RAG's Group member since 2005, it has been with pleasure I received Alan Melia, John Cook and Paul Hyde invitation for this new Groups.Io, which was accepted. From those old times when we were a few, with Dr. Laurence Newell and Mrs. Karen Holland coordinating, with John Cook, Terry Ashton, Peter King and many others, the dream was the Starbase. Now, other challenges make the future. My congratulations to the Group and thanks again ! Regards, Jose' de Almeida // (ct4an) ........................................................................ Kind Regards José de Almeida Ph.D. AppPhys, B.E. ETEng MWR R&D Engineer ITU Ties

Hi, Is it possible to open a FILES folder for documentation uploads ? Thanks. Jose' //

Hi guys, I find under my SPAM folder the invitation from Alan Melia, John Cook and Paul Hyde for this new "Groups.Io" and accepted it with pleasure. Greeting to all members (and "solar disturbed" days) ;-) Regards, Roberto Battaiola

Hello All, This past summer, I decided to do some observations related to FRBs, GRBs, and HEP events. Since the subject of unusual events in this area has been a subject of interest since I and Robert Sickels first looked at the events (1974) and named the unusual events High Energy Pulses. The study was conducted over a 30 day period at 1420 MHz. What was seen were a number of events in the Coma Berencies that mimicked (in shape) the BATSE profiles. While not claiming any discoveries, the events "looked" very similar to known events. In addition, there appears to be more number of events than what was first assumed by papers and articles on the subject and noted by Dr. Hessels Amsterdam Univ. and ASTRON and Victoria Kaspi of McGill Iniv. Dr. Hessels[?] https://www.uva.nl/en/profile/h/e/j.w.t.hessels/j.w.t.hessels.html, referring to FRB 121102 said 'We've detected hundreds of bursts from it.' Victoria Kaspi [?] of McGill University estimated that as many as 10,000 fast radio bursts may occur per day over the entire sky. Again, no claims are made here but, an attempt to do some science and learning was the goal. Jeff Best Regards, Jeffrey M. Lichtman, KI4GIY RADIO ASTRONOMY SUPPLIES http://www.radioastronomysupplies.com Phone: 954 554-3739 Fax: 954 343-1108 “The most beautiful experience we can have is the mysterious. It is the fundamental emotion which stands at the cradle of true art and true science. Whosoever does not know it and can no longer wonder, No longer marvel, is as good as dead, and his eyes are dimmed. " Albert Einstein

Hi Some of you may be aware of the Radio Meteor Detection collaboration Project which is a group of contributors who submit their monthly log files after which do a number of things with the data see here for more info: https://radiometeordetection.org/about Our latest exciting project is to see if we can successfully match Radio and Video events to aid our understanding of meteor phenomena, so we are now starting to Map Radio Meteor Altitudes for GRAVES. The attached PDF gives a full description of this project The project brief and maps can be found here: https://radiometeordetection.org If you want any more information or feel you can help in any way, please do get in touch. Kind Regards John Berman

Hi I did not pickup to many on my RX Station but what I did I have compressed into a short clip https://youtu.be/I5y4d7z5hjM Kind Regards John B

The talk of a BAA RAG meet reminded me. Some may not know that the UCARA are holding a webinar as above. Details here https://www.eucara.nl/ MIke

Hi All For quite a while fostered the idea of setting up a system. So bought two (2) e-Callisto kits. Basically this never got started and life changes, so can't see me building them but sure they would be of interest to someone. These are primarily used for solar observing but there's a lot of them out there still and sure they can be used for other projects. Others on this site can probably comment, so if these aren't great then please say so, sure I can sell elsewhere but this group gets a first look. If anyone is interested email me with a reasonable offer. It's the cases, PCB's and most of the parts including the two Philips tuners CD1316LS/IHP-3. Probably cost me around ?300 to pull this all together as a guide Can't guarantee it's all in there but sure you can buy what's needed from Farnell, RS or CPC or loads others It's a complex bit of hardware so you'll need test kit to build and test it and be happy soldering and dealing with small smd's. More details are here: http://www.e-callisto.org/index.html Steve

Hello Folks Has anyone got a link to an online VLSR calculator they could let me have. I have used the Ed Murphy VLSR calculator in the past but a Google search takes me to a link that doesn't work. All the best Brian G4NNS

Just as the Zoom conference was finishing I believe there was a question concerning the link to the EUCARA conference. I did not get a chance answering there as the Zoom was closing. The next EUCARA will is organized by the team at CAMRAS. The link on their website is https://www.camras.nl/blog/2021/eucara-2021-webconferentie-oproep/ It will be held as a virtual conference on April 17th. Originally it was planned for last year but had to be cancelled due to Covid. It is a biannual event, so the next would then be in 2022, taking up the original schedule. The venue for 2022 is not determined yet and will be discussed in April. Best regards and thanks for having me on the Zoom conference, Wolfgang

Hi Paul, well done. A very well managed first meeting. It was great to see RAG Group members and the interest fields of everybody. Congratulations to RAG / BAA for the work done ! I?m sure all appreciate the effort of organising this. Thank you. KR José de Almeida // Be prudent. Because of you and the others, use a mask !

Hi, What interested me most from the zoom talks were the ones about reception of the Crab Nebula and Pulsars at 611 and 625 Mhz. Coincidently I saw the following tweet last night about TV Channel 37 https://twitter.com/CRAF_RAS/status/1370680091840286724?s=20 I have an old analogue 9" 12V B+W portable TV set with telescopic antenna which could be modified to accept a coaxial feed from a preamp and yagi antenna on a tripod. I could also take it into a quiet RF area to do experiments. Something I may well try in the future. Regards, Mike D.

During Friday's online meeting Rupert Powell (I think) made an offer to host some online Python talks. I would be very interested in this. Having learnt enough to get started but I am now finding the limits to my knowledge. If these tutorials go ahead I would like to suggest two topics: Error handling Commenting and documenting code. If you are interested please post and suggest some more topics. Best regards Andrew Thomas

Hi The Radio Meteor Detection collaboration Project Report for Feb 2021 can be found here Thoughts on how to improve the report or other elements to include are always welcome Kind Regards John Berman

Hallo J-L, I have looked at your link to the FRIPON data base and it is a most useful resource; thanks FRIPON for sharing! The echo validation https://fireball.fripon.org/displaymaps.php showing GRAVES data overlaid on video data is something we are striving for in the UK and Ireland. For a “manual validation” it must have used a small army of analysts J I think you have mentioned in the past that the link between Radio and video is subjective based on times being roughly aligned – can you say more? Also you classify head echo, trail echo and both; are you able to identify underdense and overdense ionisation? Do you class the “head echo” as the Doppler shifted frequency part that end near zero? I have seen the backscatter plots showing separation between head and trail and I am not convinced that he entire downward shift is true head echo. We could discuss this off forum? Regards Mike --- /\ _/\/ \ / \/\ Mike German Hayfield in High Peak

Hi I have added a section the BAA Site with a link to last nights session and moving forward I will add further links as and when we have more Zoom Conferences BAA RAG Zoom Conference Meetings Its also a good time to remind you that if you have any papers to share we can expand the site and get more content in there Radio Astronomy Group Kind Regards John Berman

May 22nd 09:30 - 12:30 Working with Spectrum Lab Paul Hyde Overview Set-up Conditional Actions Typical Radio Astronomy targets: SIDs and Meteor Scatter There will be plenty of opportunity for Q&A. Thanks to Paul for sharing his experience. Please register your interest in this thread. ??? Paul Hearn ?? paul@... ??