(meteorobs) Weekend Sporadics Meteors Radio Detection

Raydel Abreu (CM2ESP) cm2esp at gmail.com
Tue Apr 9 11:12:54 EDT 2013


Yes, i apologize for that, now i remember.

After two days browsing on the internet i still found no information about
eastern transmitters, according to wikipedia (not sure if i can trust on
their info), there are only two master stations running, Utah and Idaho.
Info from reliable sources and official publications lack of many
technicals details, but such publications also mention Utah and Idaho,
there is almost none information about eastern transmitters.

Thanks,

Raydel




2013/4/9 Thomas Ashcraft <ashcraft at heliotown.com>

>  Hi Raydel,
>
> I forgot to mention that there are also 100 kW transmitters that are part
> of the SNOTEL/SCAN networks located in the eastern US.
> This was mentioned here on the list when you asked your original question
> some months ago. Someone wrote where the eastern US transmitters are
> located but I no longer have those emails with that information.
>
> Thomas
>
>
>
>
>
>
>
> On 4/9/13 7:40 48000, Raydel Abreu (CM2ESP) wrote:
>
>     I see Thomas,
>
>  But unfortunatelly both master stations Boise, Idaho and Ogden, Utah are
> over 2100 miles, according to SNOTEL info on the internet, max range is
> 1200 miles. Perhaps that's for reliable communication only...
>
>  Taking into account the antenna pointing formula found here (
> http://www.k5kj.net/meteor.htm).
>
> Pointing Angle = arctan (met height / half dist.)
>  Pointing Angle = arctan ( 60 / 1150 )
>  Pointing Angle = 2.98 degrees.
>
> So antenna should be pointing almost horizontal picking noise from all my
> city. There should be a tiny chance, but i don't know if the intensity of
> the echoes after so many distance will be enough to be over the city noise,
> antenna should be quite big.
>
>  Theoretically it could be done, but i guess it is beyond my technical
> posibilities.
>
>  Has anyone on the list have tried picking meteors at distances over 2000
> miles???
>
>  Any thoughts or advices???
>
>  Thanks,
>
>  Raydel
>
>
> 2013/4/8 Thomas Ashcraft <ashcraft at heliotown.com>
>
>>  On 4/8/13 12:11 18000, Raydel Abreu (CM2ESP) wrote:
>>
>>    Not yet....
>>
>>  I don't remember well, but two months ago i was checking for any good
>> transmitter and ran across with that. I guess the reason is i couldn't find
>> any master station in range. But perhaps i didn't understand the system.
>>
>> Please, let me know if you have information such as:
>>
>>  -Does the small remote stations run 100k or only the masters?
>>
>>
>> Only the master transmitter transmits at high power.
>>
>>
>>  -Where are the masters located?
>>
>>
>> I don't know where they are in the eastern part of the US. I am located
>> in New Mexico and am tuned into Ogden Utah which is 500 miles away.
>>
>> To merely experiment, I would recommend just pointing a yagi tv antenna
>> due north and seeing what you get. It is best to experiment in the morning
>> around dawn when meteors are most plentiful. Late afternoon or evening
>> there will be fewer meteors.
>>
>> Remember also that the meteors on this system sound like buzzing more
>> than pinging.
>>
>> Typical meteors:     http://www.heliotown.com/SNOTEL_Meteors2_Ashcraft.mp3
>> Fireball:    http://www.heliotown.com/SNOTEL_fireball_Ashcraft.mp3
>>
>>
>> Thomas
>>
>>
>>
>>  Thanks!
>>
>>  Raydel
>>
>>
>> 2013/4/8 Thomas Ashcraft <ashcraft at heliotown.com>
>>
>>> Hola Raydel,
>>>
>>> Have you tried 40.670 MHz CW for the SNOTEL/SCAN meteor burst
>>> communication network yet?  An old yagi tv antenna will work for these
>>> powerful 100 kW transmitters. Just point north.
>>>
>>> I just tuned in and am getting seven meteors per minute at near noon my
>>> local time.
>>>
>>> Thomas Ashcraft -  Heliotown -  New Mexico
>>>
>>>
>>>
>>
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>
>
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