[amsat-bb] Re: Technical question about radar reflectivity

2012-08-08 Thread John Heath
Length might work if its a suitable fraction of the wavelength of the radar signal. See the British use of Window in the 1940's. Aluminium foil strips were dropped from aircraft to confuse enemy radar.   73 John G7HIA Sent via AMSAT-BB@amsat.org. Opinions

[amsat-bb] Re: Technical question about radar reflectivity

2012-08-08 Thread Thomas Doyle
The issues faced by boaters are similar. Our sats even have the 'rough seas' problem as they thrash about like drunken pirates. http://www.duckworksmagazine.com/07/howto/radar/index.htm 73 W9KE Tom Doyle On Wed, Aug 8, 2012 at 6:08 AM, John Heath g7...@btinternet.com wrote: Length might work

[amsat-bb] Re: Radio Astronomer Sir Bernard Lovell, SK

2012-08-08 Thread Jeff Moore
What was his call sign??? Jeff Moore -- K E 7 A C Y On 8/7/2012 7:58 AM, andy thomas 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-bb] Re: Radio Astronomer Sir Bernard Lovell, SK

2012-08-08 Thread Trevor .
--- On Wed, 8/8/12, Jeff Moore tnetcen...@gmail.com wrote: What was his call sign??? He operated illegally. 73 Trevor M5AKA ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the

[amsat-bb] ESA - towards a new educational CubeSat initiative

2012-08-08 Thread Trevor .
An opportunity here for free CubeSat launches. See http://www.uk.amsat.org/?p=9515 I don't know what the proposed orbit is. The last Vega CubeSat launch was a short lifetime but elliptical 1441 km by 310 km orbit. 73 Trevor M5AKA AMSAT-UK International Space Colloquium takes place Guildford

[amsat-bb] Out of the Office

2012-08-08 Thread Martha
I will be out of the office Thursday, August 9th and Friday, August 10th. Back on Monday, August 13th at 10:00AM ET -- 73- Martha ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support

[amsat-bb] AO7

2012-08-08 Thread K4FEG
The 2140UTC AO7 pass over the US was heard by myself, I couldn't find the satellite on Mode A so on the off chance I switched to Mode B and I was clearly hearing my downlink on both CW and SSB. I am not sure why or when it switched modes but the satellite was apparently in a low power mode as

[amsat-bb] Re: Request for help with FT817, from Arnie Coro CO2KK and Hector Martinez CO6CBF

2012-08-08 Thread Prof. Arnaldo Coro Antich
Good afternoon list readers ...from sunny Havana where we have just completed while ago several AO27 QSO's ,despite a very poor location, sorrounded by buildings... Anyway both CO6CBF /2 EL83tc and CO2KK El 83tc, from my Nuevo Vedado QTH, it was possible to work stations using the FT817 for

[amsat-bb] Re: Radio Astronomer Sir Bernard Lovell, SK

2012-08-08 Thread i8cvs
Hi Jeff, KE7ACY As far I know Sir Bernard Lowell was not a radio ham. By the way another well now SK radioastronomer, John Kraus Director of the Ohio State University radiotelescope called Big Hear was a very active radioamateur with call sign W8JK 73 de i8CVS Domenico - Original Message