(meteorobs) RE:Super-Meteor' Lights up Finland's Northern Sky

[stange34 at sbcglobal.net]

Addendum. Since messages are slow.....

Reflecting signals also have a critical angle where the RF wave is sent out 
of the atmosphere entirely instead of reflecting too. Radio wave info can be 
found at amateur URL's. ARRL has a very nice book on radio wave propogation 
and the elements of that science.

Larry
YCSentinel <done for the day>


----- Original Message ----- 
From: "Esko Lyytinen" <esko.lyytinen at jippii.fi>
To: <meteorobs at meteorobs.org>
Sent: 2007/10/02 09:18
Subject: Re: (meteorobs) RE:Super-Meteor' Lights up Finland's Northern Sky


>
> Hi,
>
> I have this same experience about  "missing radio signature" from most 
> slow fireballs.
> Earlier the biggest expected meteorite dropper (nothing found, possibly 
> went to water) from recent years "Savonlinna" from the year 2002 was an 
> exception and gave an overdense reflection of close to one minute.
> Now this also gave a reflection of maybe about ten seconds, but I did not 
> have much time to this because of very much other things to do with this. 
> I will send to you directly some radio data from this in a few days.
>
> Esko
>
>>Date: Tue, 02 Oct 2007 08:18:19 -0600
>>From: Thomas Ashcraft <ashcraft at heliotown.com>
>>Subject: Re: (meteorobs) RE:Super-Meteor' Lights up Finland's Northern
>> Sky
>>To: Global Meteor Observing Forum <meteorobs at meteorobs.org>
>>Message-ID: <4702532B.1010306 at heliotown.com>
>>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>>Esko Lyytinen wrote:
>
>> >>
>> <> Hi,
>> >>
>> >> I give you here some more details about this.
>> >>
>> >> This happened sept. 28 at about 18.39.10 UT .
>> >> We have received about 300 visual reports of this, and more is 
>> >> arriving all the time. Unfortunetely all fireball cameras to that 
>> >> direction were clouded. There were however cameras even under clear 
>> >> skies to other directions.
>>
>>Are there any radio charts of this event?
>>
>>As I learned recently, sometimes a super large meteor can make a very 
>>small forward scatter radio radio signature.  I am hoping to see more data 
>>about this meteor.
>>
>>Thanks.
>>
>>Thomas Ashcraft
>
>
> ---
> Mailing list meteorobs: meteorobs at meteorobs.org
> To UNSUBSCRIBE, email: owner-meteorobs at meteorobs.org
> http://lists.meteorobs.org/mailman/listinfo/meteorobs
>