Hi Naveen, That antenna(s) should work. If the coax is more than 5 m I recommend you get a cheap TV pre-amp, ~30 eur. You should use the narrowband FM receiver and NOT the wideband found in the examples.
Here is the ECHO linkbudget http://www.amsat.org/amsat-new/echo/Echo_Linkbudget.php Just uploaded a new AO-51 recording to http://noaaport.poes-weather.com:8081/AO-51/ The antenna I use is here http://www.poes-weather.com/~patrik/AO-51/ cost < 15 eur Patrik ----- Original Message ----- From: naveen nischal To: [email protected] Sent: Monday, June 07, 2010 19:53 Subject: Fw: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51. --- On Mon, 7/6/10, naveen nischal <[email protected]> wrote: From: naveen nischal <[email protected]> Subject: Fw: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51. To: [email protected] Date: Monday, 7 June, 2010, 10:22 PM --- On Mon, 7/6/10, naveen nischal <[email protected]> wrote: From: naveen nischal <[email protected]> Subject: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51. To: "Patrik Tast" <[email protected]> Date: Monday, 7 June, 2010, 10:20 PM Hi Patrik, Thanks for the reply. I have been using the usrp_wbfm_rcv.py receiver found in the examples directory. and the antenna is a YA450-14.7-24 i have attached a picture of the antenna. Should I be using a broadband preamp or can i do without it? Do you find any problem with what i have been doing? Thanks & Regards, Naveen. --- On Sat, 5/6/10, Patrik Tast <[email protected]> wrote: From: Patrik Tast <[email protected]> Subject: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51. To: "naveen nischal" <[email protected]>, [email protected] Date: Saturday, 5 June, 2010, 1:48 PM Hi Naveen, Which receiver are you using? I use the usrp_nbfm_rcv.py receiver found in the examples directory It seems to be transmitting at the moment @ 435.300 MHz, http://www.amsat.org/amsat-new/echo/CTNews.php What antenna are you using? Sample received AO-51 using USRP and TVRX + broadband (TV) preamp http://www.poes-weather.com/~patrik/AO-51/ Patrik ----- Original Message ----- From: naveen nischal To: [email protected] Sent: Saturday, June 05, 2010 0:49 Subject: [Discuss-gnuradio] problem with tvrx , wbx and AO-51. Hi, I have recently got into doing the SDR, i have been using the both the tvrx and wbx daughter boards for communicating with the ham radio at 435.300Mhz. I am not too good at python so i use GRC. However when i try to receive from the voice from the AO-51 satellite at the same 435.3Mhz frequency i dont get anything. Any comments or suggestions are appreciated. Thanks & Regards, Naveen ---------------------------------------------------- _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ------------------------------------------------------------------------------ _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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