(meteorobs) radio obs and doppler effect

[knoll at home.nl]

Hello Ed,
In my radio meteor receiver setup all echoes have doppler effect.   Mots of
them have  about 5 Hz dopler (small pings).  I also hear very often
reflections with 30 Hz dopler.  5 Hz dopler is not much, but still easy to
hear.

I have live audio and live audio spectograms online on my website. Check out
if you see and hear the same.  It is easy to see the doppler in the audio
spectogram's. The live audio and audio spectograms are available via
http://members.home.nl/peter-knol/meteors  There is also a overview of
spectograms over the last 24 hours.

If I hear no doppler on the signal, then there is unfortunately Sporadic E
propagation going on. That's not good for Radio Meteor hunting... But then
the signal goes continious on for several minutes or even hours. It is easy
to recognise sporadic E propagation and Meteor reflections.


73s, Regards,   Peter Knol
Appingedam - The Netherlands


----- Original Message ----- 
From: " Ed Totman " <etotman at yahoo.com>
To: <meteorobs at meteorobs.org>
Sent: Wednesday, September 28, 2005 4:41 AM
Subject: (meteorobs) radio obs and doppler effect


> Hello.  This is my first post to the group.  I've been listening to TV
> channel 2 and 3 meteor echos for several months now.  Most recently I
> purchased an SDR-14 (http://rfspace.com/), which allows me to see and
> hear echoes both above and below the carrier at the same time.  I've
> heard hundreds of meteor pings, most very brief, some long, but never
> have I heard a meteor echo with a doppler effect.  I've tried USB,
> LSB, and CW, but the burst is always monotone, unlike the doppler
> recordings available on the net, such as this:
> http://spacescience.com/audio/leonidsample.wav
>
> Are reflections that include a doppler effect very rare?  If not, I
> must be doing something wrong...
>
> Thanks,
>
> Ed