Sun burst
 

Aussiland television was turned off for a short while yesterday.
Statement made that there was a sunburst aproaching the satellites!
They were only off for a short while but it would appear the sunspot
cycle has become alive!

Sun burst
 

Art Unwin wrote:
Aussiland television was turned off for a short while yesterday.
Statement made that there was a sunburst aproaching the satellites!
They were only off for a short while but it would appear the sunspot
cycle has become alive!

http://www.swpc.noaa.gov/alerts/alerts_timeline.html

No X-ray events, radio burst alerts, geomagnetic warnings, electron
flux alerts, proton flux alerts, sunspots, or anything else.


--
Jim Pennino

Remove .spam.sux to reply.

Sun burst
 

wrote in message
...



http://www.swpc.noaa.gov/alerts/alerts_timeline.html


Good one. Please also try these links; they provide solar observations and
analysis.

http://spaceweather.com/

http://umbra.nascom.nasa.gov/eit/eit_full_res.html

http://dx.qsl.net/propagation/ This one puts the Solar Flux number at the
top.

Sun burst
 

Sal M. Onella wrote:

wrote in message
...



http://www.swpc.noaa.gov/alerts/alerts_timeline.html


Good one. Please also try these links; they provide solar observations and
analysis.

http://spaceweather.com/

http://umbra.nascom.nasa.gov/eit/eit_full_res.html

http://dx.qsl.net/propagation/ This one puts the Solar Flux number at the
top.

If you run Firefox, there is the Propfire extension that puts semi-real
time info at the bottom of the browser.


--
Jim Pennino

Remove .spam.sux to reply.

Sun burst
 

On Aug 29, 10:00*am, wrote:


No X-ray events, radio burst alerts, geomagnetic warnings, electron
flux alerts, proton flux alerts, sunspots, or anything else.





Perth, Western Australia

Foxtel went off air Thurs morning 5am approx for a short
time with a notice saying it was due to solar activity.

Derek

Sun burst
 

"Art Unwin" wrote in message
...
Aussiland television was turned off for a short while yesterday.
Statement made that there was a sunburst aproaching the satellites!
They were only off for a short while but it would appear the sunspot
cycle has become alive!

no solar activity... eclipse season maybe? for a short time each spring and
fall geostationary satellites happen to line up with the sun's path,
stations that have no backup satellite may lose signal when their satellite
lines up with the sun for a few minutes and the sun's noise blocks the
satellite signal.

Sun burst
 

On Aug 29, 3:57*am, "Dave" wrote:
"Art Unwin" wrote in message

...

Aussiland television was turned off for a short while yesterday.
Statement made that there was a sunburst aproaching the satellites!
They were only off for a short while but it would appear the sunspot
cycle has become alive!

no solar activity... eclipse season maybe? *for a short time each spring and
fall geostationary satellites happen to line up with the sun's path,
stations that have no backup satellite may lose signal when their satellite
lines up with the sun for a few minutes and the sun's noise blocks the
satellite signal.

Exactly right. Back in 1986, I worked for a bank data processing
service in Bellevue, WA. I set up a leased data line between our site
and two banks in Hawaii. The line went to San Francisco then via
satellite to Hawaii. Twice a year the service was stopped for about
1/2 hour while the sun passed through the focus of the satellite dish
in Hawaii. I don't think it affected the SF end of the link. AT&T
always called to warn of the disruption.

Paul

Sun burst
 

On Sat, 29 Aug 2009 08:35:49 -0700 (PDT), KD7HB
wrote:

Exactly right. Back in 1986, I worked for a bank data processing
service in Bellevue, WA. I set up a leased data line between our site
and two banks in Hawaii. The line went to San Francisco then via
satellite to Hawaii. Twice a year the service was stopped for about
1/2 hour while the sun passed through the focus of the satellite dish
in Hawaii. I don't think it affected the SF end of the link. AT&T
always called to warn of the disruption.

If the dish is pointed at a geosynchronous satellite, it should affect
both ends of the link, but at different times of the day. Actually,
for the typical DBS 0.7 meter dish, the outage appears for about 3-5
days and lasts about 5-10 minutes.

I live in a rather dense forest, where finding a "hole" in the tree
canopy for DBS reception is tricky. The best way to locate an antenna
is to check where the sun shines through the trees during the times of
the solar outage. Where there's light on the roof, there's a path to
a specific satellite. I've been posting bi-annual tables to help with
the calcs (when I remember to do so). For example:
http://groups.google.com/group/ba.mountain-folk/msg/69c19369b4a5ffde?dmode=source
It's also a good quality test for dish location. If the dish is
showing tree branch shadows on its face during the solar outage, it
needs to be moved (or the trees trimmed).

Assorted calculators:
http://www.intelsat.com/resources/satellitedata/sundata.asp
http://www.satellite-calculations.com/SUNcalc/SUNcalc.htm
http://www.satellite-calculations.com/Satellite/SUNcalc.htm
http://www.ses-americom.com/americom_2008/siteSections/tools/sunoutage/index.php
The Panamsat derived calculators have a bug in them where it will not
accept dish diameters smaller than 1 meter. For small 0.7 meter DBS
dishes, just use 1 meter and proportionally reduce the outage
duration.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Sun burst
 

In article
,
derek wrote:

On Aug 29, 10:00*am, wrote:


No X-ray events, radio burst alerts, geomagnetic warnings, electron
flux alerts, proton flux alerts, sunspots, or anything else.





Perth, Western Australia

Foxtel went off air Thurs morning 5am approx for a short
time with a notice saying it was due to solar activity.

Derek

This just shows that Foxtel's Public Media types don't understand the
technology that they use..... Sun Outages happen twice a year for a
couple of days in a row each time. The Sun's Track lines up behind the
GeoSync Sats position, in relation to the receiving Antenna, and the
sun's noise overwhelms the Signal in the receiver. This whole deal is
nothing NEW, just misunderstood by the Bloody Wonk, who wrote the Press
Release....

Sun burst
 

On Aug 29, 1:31*pm, You wrote:
In article
,



*derek wrote:
On Aug 29, 10:00*am, wrote:

No X-ray events, radio burst alerts, geomagnetic warnings, electron
flux alerts, proton flux alerts, sunspots, or anything else.

* Perth, *Western Australia

* * *Foxtel went off air Thurs morning 5am approx for a short
time * * *with a notice saying it was due to solar activity.

*Derek

This just shows that Foxtel's Public Media types don't understand the
technology that they use..... Sun Outages happen twice a year for a
couple of days in a row each time. *The Sun's Track lines up behind the
GeoSync Sats position, in relation to the receiving Antenna, and the
sun's noise overwhelms the Signal in the receiver. This whole deal is
nothing NEW, just misunderstood by the Bloody Wonk, who wrote the Press
Release....

Let us put it into perspective. I used the term "sunburst" because I
thought it was an isolated strong sun spotas it is so early in the
cycle. But if they used the term sunburst as refering to its noise
level then no harm done as far as notifying the viewing public. Except
for me it appears that hams in general are aware of the true phenomina
and are not expecting the Sun to fall from the sky. A lot of excellent
explanations came thru and I enjoyed them. Ofcourse, if it a
subsidiary of FOX in the US then pile it on by all means
Thanks