137MHz NOAA and METEOR signals

GNU Radio
1

G’day,

Has anyone sampled NOAA or METEOR signals in the 137MHz spectrum which
they
wouldn’t mind sharing the spectrum data file(s)?

Thanks,

73, Berndt
VK5ABN

2

G’day,

Ok, let’s try it this way:

Is there someone with the equipment and time to record APT signals
transmitted
by NOAA satellites in the 137MHz band? Alternatively, geostationary
weather
satellites transmit WEFAX pictures at around 1691MHz (Hey, were are the
guys
that tuned into GPS spectrum which is right next door… :slight_smile:

I want to demodulate the AM/FM 2400Hz sub-carrier signal and display the
image. Currently I’m not in the position to capture the spectrum myself
due
to lack of equipment but this is about to change.

I can provide info on satellite passes and frequencies for your
location.

cheerio Berndt

3

On Sat, Dec 09, 2006 at 03:14:28PM +1030, Berndt Josef W. wrote:

image. Currently I’m not in the position to capture the spectrum myself due

wouldn’t mind sharing the spectrum data file(s)?
I haven’t, and I’d like the data too!

Eric

4

Berndt,

I can grab some APT audio with a USRP and Bob McGwier’s rx apt code.
Or
are you looking for the raw data coming off the TVRF – could probably
do
that as well but will need some pointers as to how to grab the raw
sample
off the TVRF card – suppose one just takes the rxapt python code and
hacks
it to dump to a file sink?

I’ve also got a Hamtronics R139 I can grab audio from – although it’s
gotten a bit deaf of late. Pics from it can be seen @:
http://oddjob.yi.org:8888/wxpics/index.html

Regards,

Bill