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[HCDX] Fw: Dxers Unlimited mid week program with RHC schedule changes announcement
----- Original Message -----
From: "Prof. Arnaldo Coro Antich" >
To: "Wolfgang Bueschel_DF5SX" >
Sent: Tuesday, July 29, 2014 6:28 PM
Subject: RE: Dxers Unlimited mid week program with RHC schedule changes
announcement
Radio Havana Cuba Dxers Unlimited's middle of the week program
for Tuesday 29 July 2014
By Arnie Coro - radio amateur CO2KK
Hi amigos radioaficionados all around the world and orbiting our
planet aboard the ISS. Yes, there are radio amateur operators on duty
at the International Space Stations and whenever they can take a
break, you can pick up their FM voice mode transmissions on the two
meters amateur band frequency of 145 dot eight hundred megaHertz...
The spacecraft is in a low Earth orbit, so the signals can be picked
up for a short period even when there is an overhead pass.... I am
Arnie Coro , radio amateur CO2KK your host here at the middle of the
week edition of Dxers Unlimited, and YES, amigos I was one of the
pioneers here in Cuba to use amateur radio satellites, a complex
technology that has enjoyed ups and downs in the preferences of the
world's ham radio enthusiasts... At one time, several of the so called
EASY SATS, made possible for many operators to establish regular two
way contacts using standard factory built radios.... and simple
antennas.... But those days are now over, and the present generation
of amateur radio satellites are in my opinion much more difficult to
access and the time windows available for making contacts are very,
very small, and that is yet another drawback. Ideally a geostationary
amateur satellite would be the way to go, but many experts say that
although it could cover only one third of Planet
Earth from its Clarke Belt orbital slot, so many amateurs will try to
use it that it would be quite useless due to the interference caused
by so many stations trying to communicate, even if the super ham
satellite offers many transponders. Then, add to this the extremely
high cost to build a the geostationary satellites, and also the need
to find a suitable launching vehicle that will also cost a fortune.
So, what we are seeing now are small , low Earth orbit satellites that
have created interest among a few radio amateurs, like Cuba's top
satellite operator, Hector CO6CBF, who has broken several records from his
Cienfuegos city of central Cuba operating position.
Hector CO6CBF has built his own special antennas as well as azimuth and
elevation rotors to turn them for optimum access to the satellites.... Si
amigos, yes my friends , oui mes amis, amateur satellites are flying, but
they are flying at low heights making long distance contacts a tremendous
challenge for the operators that must rely on minimum height above the
horizon passes to assure the longest possible contacts...
Stay tuned for more radio hobby related information coming to you from
La Habana, where we are going through a period of extremely high
temperatures and low relative humidity...
I am your host Arnie Coro,
my ham radio callsing is CO2KK
and I will be back in a few seconds after a short break for a station ID
..................................
*Yes amigos, this is Radio Havana Cuba, and here are some recent
schedule changes that took place on july 25th .... Starting on Friday
July 25th UTC day, we are no longer using 9550 kiloHertz from 11 to 13
hours UTC, and also NOT using 15340 kiloHertz from 13 to 15 hours
UTC.... Then, here is now another important schedule change.... since
Friday July 25th, our 11760 kiloHertz frequency continues to be on the
air after 15 hours UTC and until 19 hours UTC broadcasting programs
that we were previously only streaming to the Internet. The first
three hours from 15 to 18 UTC are in Spanish, broadcasing our new CUBA
ONLINE magazine show that received many nice reports from listeners
picking it up via the streaming audio from www.radiohc.cu, and who
suggested that we made it available also via short wave , something we
have done using a 100 kiloWatts transmitter on 11760 kiloHertz with
the 6 dB gain omnidirectional antenna that provides coverage to parts
of North America, all of Central America and the Caribbean, as well as
the northern areas of South America. Reports received so far confirm
what our engineering department had calculated to be the 80 percent of
the time service pattern. So, give it a try, and tune in to 11760
kiloHertz from Radio Havana Cuba from 15 to 18 hours UTC and then from
18 to 19 hours UTC in other Arabic and Portuguese....*
Now here is item three of the middle of the week program of Dxers
Unlimited...
Over the weekend, several Perseid meteor shower advance fireballs were
detected by observers, and this can best be described as signals of
the beginning of the annual August Perseids meteors display. Normally
the best time to watch would be during the shower's peak: August 11th
through 13th. This year, however, the supermoon will cast an
interfering glare across the nights of maximum activity, reducing
visibility from 120 meteors per hour (the typical Perseid peak rate)
to less than 30. Instead, late July-early August might be the best
time to watch as Earth plunges deeper into the debris stream of comet
Swift Tuttle, before the Moon becomes full. For radio amateur
operators the yearly Perseids are among the best showers for meteor
scatter propagation Dxing attempts.
Now let me explain in detail ---- PERSEID METEOR SHOWER BEGINS as the
Earth is entering a broad stream of debris from Comet Swift-Tuttle,
source of the annual Perseid meteor shower. Although the peak of the
shower is not expected until August, meteors are already flitting
acrosss the night sky.
By the way, TV Dxers in the days of analog television broadcasts were
able to log many low band TV stations within the frequency range of 54
to 88 megaHertz in the Americas using the ionized trails of meteors
entering the upper atmosphere. You had to be pretty lucky so that the
burn of the meteor will coincide with the time of a station ID... but
dedicated TV Dxers proved that this happened more often than expected, as
they kept cameras in front of the TV set's screens and also later kept
videocassette machines running all the time during the meteor showers ...
I began TV Dxing in the middle of the nineteen fifties, and was able to
log the audio channel of the then on the air BBC One TV from London, when
the super active solar cycle 19 sent the monthly sunspot counts to the
above 200 mark, something never before again seen eversince....
Digital Terrestrial Television broadcasts using any of the several
available standards are not DX friendly at all, something that has
taken its toll, reducing the number of TV Dxers dramatically in every
country where the analog blackout takes place....
Nevertheless there are still many nations around the world where the
analog TV signals are still on the air and the analog blackout is not
expected to take place until a few years from now.
At the end of the show a short form solar activity and HF propagation
update. Sunspot number hovering around 140, the solar flux was near
130, and the effective sunspot number was around 85 Tuesday at 15
Hours UTC, add to this that all the active sunspot regions show no
signs of powerful magnetic activity. Best HF propagation conditions on
the Northern Hemisphere to happen after local sunset and until one
hour past sunrise.... So , here is Arnie Coro's advice for short wave
listeners and radio amateurs alike if you want to pick up DX stations
, stay awake after midnight and go to sleep one hour after your local
sunrise !!!
Yes amigos, your signal reports, comments about this and other Radio
Havana Cuba programs and radio hobby related questions are most
welcome to the following e'mail address: inforhc at enet dot cu
again, inforhc at enet dot cu. or VIA AIR MAIL
to Arnie Coro, Radio Havana Cuba, Havana, Cuba
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