Re: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51.

[Patrik Tast]



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: address@hidden

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 <address@hidden> wrote:

From: naveen nischal <address@hidden>
Subject: Fw: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51.
To: address@hidden
Date: Monday, 7 June, 2010, 10:22 PM

--- On Mon, 7/6/10, naveen nischal <address@hidden> wrote:

From: naveen nischal <address@hidden>
Subject: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51.
To: "Patrik Tast" <address@hidden>
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 <address@hidden> wrote:

From: Patrik Tast <address@hidden>
Subject: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51.
To: "naveen nischal" <address@hidden>, address@hidden
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: address@hidden

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

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