Hi, The sensitivity is -117 dBm for 10 to 12 dB SINAD. 73 OZ1MY Ib ----- Original Message ----- From: "Andrew Glasbrenner" <glasbren...@mindspring.com> To: "Robin Theunis" <robin...@gmail.com> Cc: <amsat-bb@amsat.org> Sent: Thursday, June 10, 2010 12:43 AM Subject: [amsat-bb] Re: Technical question AO-51
> Robin Theunis wrote: > > 1) In V/S mode What is the average output power? > > > About 1.5 watts. > > 2) What kind of antenna is used on 2.4GHz and 1.3Ghz? > > > A dual band antenna built by Stan Wood WA4NFY. > http://n4hy.smugmug.com/AMSAT/AO-51-ECHO/Antennas/ > > 3) What is the sensitivity of the 1.3Ghz receiver? > > > I don't have these numbers at hand, but it's not super. The L receiver > is actually the same receiver as HF, i.e. an all band, all mode type > synthesized receiver. > > 4) Some where I reeded that AO-51 has an HF receiver? If it true, for > > what is the purpose? > > > We initially wanted to try 28MHz/435MHz PSK31, but with the short > antenna, and extra losses in a last minute hardware change, this mode > does not work very well. > > 73, Drew KO4MA > AMSAT-NA VP Operations > _______________________________________________ > 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 > _______________________________________________ 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
