(meteorobs) Possible alternate meteor monitoring frequencies
Paul Goelz
pgoelz at comcast.net
Wed Jan 16 08:15:29 EST 2013
At 01:29 AM 1/16/2013, you wrote:
>The 50 - 54 MHz (6M) band is very protected by Amateur Radio Operators(HAMS)
>for Text Communications. Many Emergency Operations use this band for long
>distance text Comm Traffic. CW Meteor RADAR can use this band but must be
>below 50.1 MHz in Region 2 which include the Americas, the North Pacific
>Ocean, and parts of Antarctica.
>
>What you are probably hearing is bounce from HAMS TTYing each other. This
>traffic will come and go, and will be sporadic in frequency with MODEM
>Modulation in this Band.
Two problems with that analysis.... first, the frequencies I am
listening to are outside the 6M ham band and within the general area
used by the video carrier for channel 2 analog TV transmissions.
Second, I am a ham myself and know the difference between signals
modulated for the purpose of transmitting information and dead
carriers. These carries are un-modulated. They do show airplane
tracks but so far, they do NOT show meteors. I am trying to deduce
the reason they do not show meteors.
I also note that while there are some similarities between the
airplane tracks on these signals and those on a known video carrier
on 55.260 MHz, there are also tracks that are not a match to those on
55.260 MHz.
I continue to keep open the possibility that they are not really
there since I am receiving them on a $16 USB dongle. However, they
can also be heard on a conventional receiver on a different antenna
so I have to belive they are genuine. But the bottom line is that
since I see no meteors, they are not useful for our purposes. At
least not here in the midwest.
Paul
WA9PUL
Paul Goelz
pgoelz at comcast.net
Rochester Hills, MI
www.pgoelz.com
More information about the meteorobs
mailing list