I remember Echo very well. As Domenico stated it was very visible. I remember my father taking my siblings and I outside to view. He certainly had my attention then.
73, Bill NJ1H On 6/29/2010 2:05 PM, i8cvs wrote: > Hi Greg, KO6TH > > Echo-1 A was a passive communication satellite launched on 12 august 1960 > in a circular orbit at 1519 - 1687 km and it was a balloon 30.5 meters in > diameter made of 0.0127 mm thick metallized mylar polyester film to reflects > signals transmitted from the earth at 960 MHz and 2390 MHz > > Echo-1 A was also carrying two VHF TLM beacons at 108.000 and 108.03 MHz > with a power of 45 mW and I was receiving both of them for several days > using a homebrewed downconverter with two low noise triodes 6AN4 in a > cascode input stage and a simple three elements yagi. > > At that epoch time the 108 MHz band was used only for aeronautical and space > communications but not for FM broadcasting as novadays so that it was free > of interfering signals and man made noise and the only existing noise was > the galactic noise. > > By the way in the early 1960 it was my first received satellite signal and > it was very exiting to receive the 45 mW beacons using only a three elements > yagi and a downconverter with a noise figure at best of 6 dB while to see > the balloon as a bright star by naked eye flying in the night. > > For more technical informations on ECHO-1 ,ECHO-1A and ECHO-2 look at > the following web page: > > http://msl.jpl.nasa.gov/QuickLooks/echoQL.html > > > 73" de > > i8CVS Domenico > > ----- Original Message ----- > From: "Greg D."<ko6th_g...@hotmail.com> > To:<bruni...@usna.edu>;<amsat-bb@amsat.org> > Sent: Tuesday, June 29, 2010 7:03 AM > Subject: [amsat-bb] Re: HF Satellite Relay > > > _______________________________________________ Sent via amsat...@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
