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Questions? email: drdish@drdish.com
snail: Dr. Dish
Postfach 1153
D-52532 Gangelt
Germany
fax: +31 45 527 3615
Answers! http:// www.drdish.com
Tech Support for Lima
We are university students in Lima
(Peru) and we have an investigation
work about "Satellite Systems Around
the World". We are writing because we
need your help for the following:
1. How many satellites has your Fleet
Sat Com System around the world?
2. Which is the position of the nearest
Fleet Sat Com satellites to Lima?
3. Can you give us a Technical Support
about the type of antenna, transponder,
frequencies and other equipment
that it's necessary to receive signals of
Fleet Sat Com System in our site.
J.Rodriguez
Answer from Dr.Dish:
We do not have any fleet of satellites.
Worldwide there are 256 geostationary
("fixed") satellites operational. This is today's
counting. That number changes constantly.
176 of these satellites are telecom-satellites
serving people with TV radio, data and
telecommunication. The rest are military-,
weather and scientific-satellites.
From Lima/Peru you could "see" all satellites
from 8°W to around 150°W only. A small
Picture courtesy: SuperNet Pakistan
Knowledge
Zone
cle is for you the
nearby Andes
to the east. This
makes it difficult to
receive a satellite with a
low elevation (eastern direction). Living in
Miraflores gives you to the east three more
satellites more, than living in Vitarte. So
you should concentrate on Nahuel 1A at
71.9°W, the Brazilsat's on 70.2°W, 84.1°W
and 65.0°W and all Intelsat's between 21°W
and 56°W. A good alignment satellite for
true north in Lima is the Brazilsat at 79°W.
After receiving the first signal from this
satellite a small correction of only 2° on the
polarmount must be done.
For channels in C-band and Ku-band, consult
SatcoDX (http://www.satcodx.com/).
As usual in your region a large dish 3.10m
and up is used equipped with a dual-feed for
C/Ku-band reception and the proper LNB´s.
The receiver should be able to work on both
bands and also be able to receive digital (it is
also your future) and analogue signals.
Classified information for Peru
Please relay to Sr. Rodriguez (see previous
question) that FleetSatCom is
a classified military communications
system operated by the U.S. Navy, and
that all traffic is secure, except for the
pirate traffic that occasionally occurs
and is hunted down and neutralized by
the military worldwide. The Fujimori
government may treat unauthorized
attempts to receive or transmit on that
system from Peru as a criminal act,
under the jurisdiction of military law.
Stick to receiving legal television and
radio broadcast services. You'll live a
lot longer.
D. Gavilanes, Garden Grove, Ca. (USA)
Answer from Dr.Dish:
The orbit is not owned by a single government.
A country that
uses the space - like
all others - by placing
military or other
satellites around the
globe, has to expect
that its satellites are
subject to inspection
by third parties.
And if the system is
not secure, it is not
the problem of the
listener, but a problem
of the satelliteowner.
Since I wrote
my report on the
"Swiss-Cheese-secu-
rity" of FleetSatCom's
Special reception requirements create special needs for setting up the satellite equipment.
and UHF-satellites
for TELE-Satellite
number is transmitting into your area. For International, the US-military is aware of
satellites serving you area, please consult the security-problems. Most communica-
SatcoDX or order TELE-Satellite International tion and data is well protected - but not
Magazine, which publishes the so-called completely. Each military strike against the
footprints for the Lima-region. One obsta- Iraq or ex-Yugoslavia is foreseeable. The
unwanted and pirate traffic via this satellitesystem
is also dangerous, because using a
high-power transmitter would kill nearly allmilitary
traffic. This reminds me, that I did
not answer properly the former questions
from Lima: try FltSatCom 8 at 23.1°W and
UFO-7 at 23.5°W in the P-band. Additional
information is published in TSI back-issue
1-2/98 on page 232.
Panamsat 7
PAS-7 has been successfully launched.
Do you know where it is now, when
it will be doing test transmissions and
when it will be located at 68.5? I live in
Malawi, Africa and hope to see many
new channels - any idea what is coming?
Hope one day to be able to watch
your TV show in Africa.
Dave Smith
Answer from Dr.Dish:
PAS-7 just arrived in orbit, so keep an eye
on the SatcoDX transponder charts. First
sightings of testing are reported there and
the SatcoDX-people usually are the first to
report on transponder-activity. Yes, we too
hope to get DrDish@TV into the African
countries. But this is quite difficult and
everything depends on the good will of
satellite operators. First we will try to get the
whole show onto the Internet. If we have
any news, it will be published here.
Spy Satellite
Rumors concerning the explosion of
a Titan 4 rocket during launch are
running high. No comments on the
payload. Do you know more about
the satellite destroyed on this launch
attempt?
H.de Koning
Answer from Dr.Dish:
It was a spy-satellite (Mercury SIGINT) and
should be placed over Africa, targeting the
Middle East and Afghanistan. The satellite
would be able even to intercept telecommunication
of the now wanted Osama bin
Ladn.
AFN Radio vs. Inmarsat
Thanks for the valuable hints about
how to get started with Inmarsat-rx.
I fixed the antenna and got a second
hand IC-R7000, but no traffic at
all. Could you give a reference frequency
for antenna-alignment? In our
regional sat-newsletter a Dr.Dish-story
says your broadcasting will be seen in
Cyprus, because you are moving digital
to the Hotbird-position?
D. Papanicolau
Answer from Dr.Dish:
News is travelling fast these days. Yes,
somewhere in the beginning of 1999 the
show could be moved to 13°E. Also true: it
then would be in MPEG (SCPC). That's all
I can tell you for now as we are currently
gone through the hands of
reto communications, bâle (switzerland)
www.reto.com