|
| If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|||||||
| Register | FAQ | Members List | Calendar | Mark Forums Read |
![]() |
|
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
|
|||
|
Meteor showers can make your phone ring.
http://spaceweatherphone.com/ |
|
||||
|
Quote:
Aren't there ham radio buffs who try bouncing radio waves off meteor trails?
__________________
Everything I need to know I learned through Googling. |
|
|||
|
Actually, Ham operators don't "bounce" waves off meteor trails. When a meteor vaporizes in the atmposphere, it produces a burst of radio noise. This noise can be easily detected with a standard receiver.
I did this last year during the Leonids and was surprised how easy it was. I used a 2 meter receiver with a magnetic mount car antenna. I was hearing about 10 bursts per minute at a frequency of about 144 Mhz (can't remember the frequency exactly...my records are at home). I even recorded the bursts on a standard cassette tape and played them for my students the next day. They all gave me a look that said, "Oh my God! He is recording STATIC!" The reading I did indicated that you can even detect the burst in the FM radio band if you find a quiet station. I tried this, but living between Chicago and Milwaukee, fat chance of finding a station quiet enough. Rob
__________________
"Crackpot theories 1 : Regular theories a billion." Fry |
|
||||
|
Quote:
(And they do your stuff, too.)
__________________
Everything I need to know I learned through Googling. |
|
|||
|
Actually, a meteor doesn't produce radio noise that amateurs are interested in.
It creates an ionised trail which is perfect for bouncing radio waves off. Such trails are usable for a few minutes. Amateurs use distant radio stations as beacons for this. If they hear it for a minute or two before it fades, it's bouncing from a meteor trail.
__________________
"We want a few mad people now. See where the sane ones have landed us!" - George Bernard Shaw |