[time-nuts] Sun Outage

Brooke Clarke brooke at pacific.net
Thu Oct 9 19:26:50 EDT 2014


Hi Graham:

Do you know if anyone has used a Ku-band receiver, like described in the paper, to look at Jupiter?
The Radio Jove project is looking between 18 and 40 MHz.
http://radiojove.gsfc.nasa.gov/

Have Fun,

Brooke Clarke, N6GCE
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html

Graham wrote:
> If you have an interest in trying to measure sun noise, you might like to have a look at the "itty bitty radio 
> telescope".
>
> (watch the line wrap)
>
> http://www.arrl.org/files/file/ETP/Radio%20Astronomy/Build%20a%20Homebrew%20Radio%20Telescope-QST-0609.pdf
>
> http://www.gb.nrao.edu/epo/ambassadors/ibtmanualshort.pdf
>
> http://www.stargazing.net/david/radio/itty_bitty_radio_telescope.html
>
> as a start. A google search will return more.
>
> cheers, Graham ve3gtc
>
>
>
> On 2014-10-09 14:23, paul swed wrote:
>> Exactly geosyncs have sun outages as the sun aligns with the sat and your
>> dish.
>> GPS because the sats are distributed do not suffer from the effect.
>> Regards
>> Paul
>> WB8TSL
>>
>> On Thu, Oct 9, 2014 at 2:04 PM, Mike Feher <mfeher at eozinc.com> wrote:
>>
>>> Bob -
>>>
>>> I do not believe it has any effect. The DirecTV satellites are
>>> geostationary at about 22K miles. I used to experience the same phenomenon
>>> in the late 70's with my TVRO receiver at C band. GPS has some 36 or so
>>> satellites in a Medium Earth Orbit (MEO). Blockage, if it can even occur
>>> due to the nature of the receiving antenna, of a single one for a few
>>> minutes will have no discernible effect in my opinion. 73 - Mike
>>>
>>> Mike B. Feher, EOZ Inc.
>>> 89 Arnold Blvd.
>>> Howell, NJ, 07731
>>> 732-886-5960 office
>>> 908-902-3831 cell
>>>
>>> -----Original Message-----
>>> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Bob
>>> Stewart
>>> Sent: Thursday, October 09, 2014 1:40 PM
>>> To: Time Nuts
>>> Subject: [time-nuts] Sun Outage
>>>
>>> Two days this week, there was a 3 or 4 minute outage on DirecTV as the sun
>>> aligned with the satellite and my dish.  So I was wondering what kind of
>>> effect this has on the GPS system and especially timing receivers.
>>>
>>>
>>> Bob - AE6RV
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