[amsat-bb] Re: VE3NKL/p
Thanks to everybody who was on the satellites during our vacation in Newfoundland. Working you on the birds was an exciting experience... Now it is time to fill out QSL cards and send them out... I will update my progress on this on the QRZ page. 73, Nikolai / VE3NKL Many thanks to Nikolai, VE3NKL, who operated portable from 6 different grids in Newfoundland, Canada during the past 2 weeks. *Thanks to his family that shared their vacation time with us Grid Chasers while Nikolai took time out to work the satellite passes.* Great signal and you handled it well Nikolai. Thank you for the contacts and new grid squares. Thanks for GN09, GN19, GN26, GN28, GN37 GN38 (May have been one more!). When do you go on vacation again?? HI HI! 73 de K4FEG EM55 ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] UA9CS Igor
Good morning all I have notice interesting to UA9CS Igor but noting the mail in qrz.com , help me Thank in advance Mark ik1ran ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Quite a way to rehabilitate yourself ...
Got to beat stamping out license plates. Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Joe Fitzgerald Sent: Monday, August 06, 2012 9:41 PM To: AMSAT-bb Subject: [amsat-bb] Quite a way to rehabilitate yourself ... Will these guys help us launch AMSAT Fox? http://www.spacenews.com/civil/120726-san-quentin-prisoners-building-satelli te-hardware-for-nasa.html -Joe ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Technical question about radar reflectivity
Hi All, I am preparing a response to the UK Space Agency Consultation Document on the planned Reform of the UK Outer Space Act. Generally the proposals appear to support cubesat development here in the UK and therefore should be supported. Included in the Impact Assessment document that comes with the Consultation Document is a finding that “ Further, cubesat designers should be encouraged to incorporate appropriate reflectors on the outside of their platforms to enhance their radar cross-section/signatures and therefore their detectability from the ground in order to minimise the potential collision risk with other operational satellites.” Would I be technically correct to be able to state something along the lines of... “Many/most cubesat platforms have communication systems that use frequencies in the 435-438MHz amateur satellite service and use projecting 1/4 wave monopole or 1/2 wave dipole antennas. As these frequencies are adjacent to those used by many of the ground based radars used for tracking space objects, it can be demonstrated that this finding is being and will be satisfied” I assume that their reflection will be enhanced by these antennas but want to make certain of the facts . so expert comments please. thanks Graham G3VZV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re Radar reflectivity
Graham et al, Further to my last email, I discussed the subject in greater depth in my December 1961 QST article, The Mechanisms of Space Communication. It is available to ARRL members on www.arrl.org. 73 Ray ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: 437 MHz - Curiosity - Mars Reconnaissance Orbiter Frequencies
http://www.stuff.co.nz/timaru-herald/news/7426497/Mars-link-for-Timaru-man 73! ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] IEEE Spectrum Article on AFRL's Plug and Play Satellite Architecture
http://spectrum.ieee.org/aerospace/satellites/us-air-forces-plugandplay-satellites/ Tom WB8WOR ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] (no subject)
http://www.onorbit.com/node/4836 73s Bernhard VA6BMJ @ DO33FL ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: (no subject)
The title of my posting should have read First Colour Picture From Mars Science Laboratory. For some reason, Gmail deleted it when I sent it. 73s Bernhard VA6BMJ @ DO33FL On 8/7/12, B J va6...@gmail.com wrote: http://www.onorbit.com/node/4836 73s Bernhard VA6BMJ @ DO33FL ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Radio Astronomer Sir Bernard Lovell, SK
In his early teens he built an illegal radio transmitter, see the video interview he gave at http://www.webofstories.com/play/17785 73 Trevor M5AKA --- On Tue, 7/8/12, andy thomas andythomasm...@yahoo.co.uk wrote: http://www.bbc.co.uk/news/uk-england-19164236 73 de andy g0sfj ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] qrv on hf from Peru!
Hi all, Received permission from the club to operate via hf from the club station. Nice gear. Will listen up for anyone who needs Peru. Feel free to repost as need be! 73 de Norm n3ykf ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] fo-29 tonight
Will be qrv on the 0540z pass of fo-29. Can work this pass all the way to the horizon due to it's azimuth. 73 de Norm n3ykf/oa4 ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Vermont Lunar Lander Ion Drive CubeSat aims for 2013 launch
Watch the presentation at http://www.uk.amsat.org/?p=9508 73 Trevor M5AKA AMSAT-UK International Space Colloquium takes place Guildford Sept. 15-16 http://www.uk.amsat.org/colloquium/twelve AMSAT-UK News on Twitter: http://twitter.com/AMSAT_UK ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Technical question about radar reflectivity
It's really cross sectional area rather than length. Can't really assume military radar is on a specific frequency. I think what perhaps should be avoided is the use of any angular surfaces in the body designed to keep the cubesat either in orbit or to help it pass through the atmosphere. i.e. sample return missions or atmospheric 'skipping' Similarly, the use of titanium and heat resistant ceramics should be avoided although that is too specific for legislation. PerhapsNot designed for atmospheric re entry, would be better. Sorry, back to the topic, angular surfaces and radar absorbing coatings not a good idea. Thanks es gl David G0MRF -Original Message- From: Graham Shirville g.shirvi...@btinternet.com To: AMSAT BB amsat-bb@amsat.org Sent: Tue, 7 Aug 2012 22:32 Subject: [amsat-bb] Technical question about radar reflectivity Hi All, I am preparing a response to the UK Space Agency Consultation Document on the planned Reform of the UK Outer Space Act. Generally the proposals appear to support cubesat development here in the UK and therefore should be supported. Included in the Impact Assessment document that comes with the Consultation Document is a finding that “ Further, cubesat designers should be encouraged to incorporate appropriate reflectors on the outside of their platforms to enhance their radar cross-section/signatures and therefore their detectability from the ground in order to minimise the potential collision risk with other operational satellites.” Would I be technically correct to be able to state something along the lines of... “Many/most cubesat platforms have communication systems that use frequencies in the 435-438MHz amateur satellite service and use projecting 1/4 wave monopole or 1/2 wave dipole antennas. As these frequencies are adjacent to those used by many of the ground based radars used for tracking space objects, it can be demonstrated that this finding is being and will be satisfied” I assume that their reflection will be enhanced by these antennas but want to make certain of the facts . so expert comments please. thanks Graham G3VZV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Hardware From Mars Science Laboratory Landing Located
http://www.nasa.gov/mission_pages/msl/multimedia/PIA16001.html 73s Bernhard VA6BMJ @ DO33FL ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Radio Astronomer Sir Bernard Lovell, SK
Hi Andy G0SFJ I am very concerned about Radio Astronomer Sir Bernard Lowell went SK. I was in contact with him and his assistant Doctor Lascelles by letter in 1960 when the ECHO-1 passive satellite was launched and I received his VHF beacon at 108.000 and 108.003 MHz. He was the Director of Radiotelescope of Jodrell Bank in UK and he writes many technical compreensive articles about the Radioastronomy one of that is Radiotelescope looks back into the aeons of the universe 73 de i8CVS Domenico - Original Message - From: andy thomas andythomasm...@yahoo.co.uk To: amsat-bb@amsat.org Sent: Tuesday, August 07, 2012 4:58 PM Subject: [amsat-bb] Radio Astronomer Sir Bernard Lovell, SK http://www.bbc.co.uk/news/uk-england-19164236 73 de andy g0sfj ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
