End of Year Presidents Views November/December 2004.
This
has been a great year for our club if for no other reason
than to see so many members working together to make
our dream of our own workshop/shack become a reality. Looking
back through the magazines to May the articles and photos
tell their own tale. There is still work to do, the electrical
supply situation has been sorted and the electrician is confident
that "switch on" will be before Christmas. The
plumber should have started work by the time you read this.
Reg/ Jenny and Albert are pressing on with the painting,
when all this is complete we can begin to look at installing
our radio equipment. At this stage I am not going to single
any one person out for thanks, but offer a THANK YOU to all
who have made this project possible.
On the wider Amateur Radio scene we have witnessed the formation of a national
WIA with an interim board and national president. We have seen a section of
our 70 cm band withdrawn from our use and know that the 40 mtr allocation won
as a world wide primary
allocation (7.00 to 7.20) is under threat by some of the worlds broadcasters.
The WIA urgently needs your support not so much for its finances but for weight
of numbers when in negotiation with the ACA.
So those of you presently not WIA members Please think again about the privileges
you enjoy "on air" that have been won because others have given their "spare
time" in the WIA to win and retain them.
October 23rd saw a forum of representatives of 14 Victorian radio clubs. This
was called by Amateur Radio Victoria WIA Vic by another Name. Mike Ide and
myself attended for GGREC. We were addressed by Jim Linton and received reports
from clubs not able to attend. Each club was then given time to speak on it's
activities. This was followed by a Talk fest by Michael Owen VK3KI and ample
time given for a question and answer session. Some agenda items though were
not covered due to limited time. The fact that 14 clubs came together to talk
about the future of amateur radio was a plus in itself. All our committee members
have copies of the agenda and a short report of proceedings from my viewpoint,
for more details see Mike or myself.
We have just held the last exams scheduled for this year. We able to hold an
exam in January 2005 on the 15th for those wanting to sit before the school
year commences. To make this available we must have the applications into the
WIA by 6th December at the latest.
The Christmas hamper is slowly filling but still needs some father donations,
Bruno is keen to sell the tickets he is holding. This is usually a prize worth
having.
Don’t forget the end of year celebrations. December 3rd Prac night proceeded
by a BYO meal, fish and chips, pizza, pasty and ??? This will be in the guide
hall doors open at 7pm sharp, tea and coffee provided as usual.
Our breakup will also be held at the hall on Saturday December 11th. Start
time 12 midday. Details at next Meeting.
Australia Day next year is on a Wednesday we are intending
to open the club room and operate with the usually granted
AX prefix.This will be combined with a BBQ.
Those who indicated their intention of coming to Beechworth should book their
sites now to avoid missing out on a great weekend.
The caravan park we are using is; Lake Sambell Caravan Park, Jarvis Road Beechworth
Vic 3747. Ph 5728 1421.
That’s all from for this issue except to hope you all have a happy
safe holiday season. Would'nt it be great to have consideration and patience
on our roads with no statistics to quote.
From Pat and I a happy and peaceful Christmas
Peter VK3VB.
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All-modes for Foundation Licence not important: WIA President
The Wireless Institute of Australia continues to publicly
accept the ACA decision to restrict the proposed Australian
Foundation Licence to hand-keyed Morse code and voice. WIA
National President Michael Owen VK3KI in addressing the recent
Victoria Clubs Forum in Melbourne briefly mentioned the issue
while talking about the enormous positive progress being
made by the WIA to introduce the new licence next year.
The WIA National Board of Directors does not necessarily
agree that digital modes should be excluded from the new
licence, but is not pursuing the matter. Michael Owen VK3KI
said "…you don't want to die for an issue" -
an indication that for some undisclosed reason the WIA is
not making strong representations to the ACA.
This is indeed puzzling. The majority of submissions made
to the ACA inquiry into Amateur Service Regulation strongly
supported all-modes. The restrictive Foundation Licence as
proposed by the ACA is a disappointment to many. The WIA
National Board of Directors has overturned core WIA policy
on the Foundation Licence. That policy for all-modes was
set under the former WIA Federal restructure after many hours
of conference debate and consultation with WIA members.
The WIA President at the Victoria Clubs Forum suggested
that the modes of transmission is perhaps something that
could be reviewed once the licence has existed for several
years.
The opposing view in the amateur fraternity is that the
Foundation Licence must be immediately highly attractive
to the widest range of people to maximise its impact on increasing
participation in amateur radio.
While Europe through the CEPT common licence system is moving
towards an all-mode Foundation Licence to provide a new entry
level to the hobby of amateur radio, Australia will be out
of step.
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Victorian Technical Advisory Committee - meeting 13 November
2004
The WIA VK3 Advisory Committee has held a very productive
VTAC meeting of repeater owners and custodians that includes
some important decision making. The meeting began with VTAC
Chairman, Peter Mill VK3APO outlining the WIA restructure
as it applies to Victoria and reassurance that the intention
is to continue providing support for repeaters, for the benefit
of the amateur fraternity.
The 28 who attended came from Ballarat, Bendigo, East Gippsland,
Geelong, Horsham and Mildura as well as metropolitan Melbourne.
They represented a range of interests - voice repeaters,
IRLP, WICEN, Automatic Position Reporting System, Broadcasts,
Beacons and Amateur Television.
A key
decision taken was to adopt, in Victoria, the CTCSS sub-audible
tone of 91.5 Hz to replace the problematic 123
Hz. Incidence of what is known as 'phantom 123' is making
that tone unreliable. VK4 has already adopted 91.5 Hz for
the same reason. In Victoria it was decided under "Note
6, Repeater Linking" that 91.5 Hz will replace 123 Hz
for use by repeaters fitted with CTCSS for interference protection.
The transition to 91.5 Hz will occur in Victoria over the
next two years, it has already been adopted in VK4 and is
being considered as a new national CTCSS tone under the WIA
Band Plan. There will be no change however to the 141.1 Hz
tone that enables linked repeater users to activate frequencies
in accordance with the conditions of their grade of licence.
On 70cm, it was decided, due to continuing interference
from LIPDs, that a number of severely affected repeaters
within the Melbourne metropolitan area may conduct experiments
using dual receivers. One receiver will have the standard
5 MHz off-set with 91.5 Hz CTCSS protection and the other
using 5.4 MHz alternative split with carrier squelch, as
outlined in the current WIA Australian Band Plan.
A new 149 MHz Victoria-wide government sponsored alpha-numerical
paging system for the Country Fire Authority, State Emergency
Service and Rural Ambulance is now being tested and is expected
to be fully operational by August 2005. It will have high-powered
transmitters at 190 sites, including 18 that are co-located
with amateur two-metre repeaters. VTAC has been consulted
in advance of the roll-out of this new paging system. Interference
to amateur repeaters will be minimized through a consultative
process that has been initiated by the ACA in conjunction
with the WIA.
Among other topics discussed were proposed repeater linking,
an expansion of transmission outlets for the WIA National
and Vic-Link broadcasts, and occupational health and safety
requirements of repeater sites.
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The future of electronics in danger
The
latest supporting argument to "re-think" Australia's
proposed Foundation Licence comes from the Australian Council
of Deans of Science (ACDS) which has expressed serious concern
about the future of the electronics industry. The Academics
warn that the decline in maths, physics and chemistry is
a threat to the electronics industry, and other directly
related sectors such as the nanotechnology, telematics and
bioinformatics.
An article by Steven Keeping in Electronics News (Australia)
said the ACDS believes that the newly-elected Federal Government
has failed to address the declines in the study of these
vital "enabling" subjects in Australian Universities
and Schools. While welcoming parts of the Government's plans
and funding, the academics claim they "don't in themselves
tackle the central issue of falling enrolments in the enabling
sciences."
This
is further support for the argument to "open up" the
operating privileges for Australia's proposed Foundation
Licence.An interest in amateur radio encourages and supports
an interest in the "enabling" school subjects -
maths, physics and chemistry - components of all three are
in the syllabus of each existing amateur licence and in the
practice of amateur radio.
Severely
restricting Foundation Licensees, as currently proposed,
to hand-keyed
Morse code and voice modes will not
maximise the benefits that can flow from this new entry level
licence. Australia's electronics and electrical trade association
(AEEMA) recognises the vital importance of education in its "Action
Agenda" which has been presented to politicians for
consideration.
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Mystery surrounds Opera
A
contemporary opera called "Cosmonaut" has a
striking similarity to the amateur radio activities of Melbourne
school teacher, Maggie Iaquinto, who was befriended by a
number of crews on the Russian MIR space station.
In 1991 Maggie made world history by having the first computer-to-computer
radio communication with the Space Station MIR. She actually
taught Cosmonaut Musa Manarov U2MIR over the amateur radio
airwaves how to communicate using packet radio. Prior to
that she had regular voice contact with MIR. Her activities
were recognised by the prestigious Wireless Institute of
Australia's Ron Wilkinson Achievement Award.
Cosmonaut, the opera, that has played at the Melbourne International
Arts Festival, is about a communication between a Russian
cosmonaut and a woman in Australia. An unusual relationship
develops between a cosmonaut as he floats through space and
a woman on earth who dreams of a better life.
She had the pleasure meeting the cast of the opera. As a
result of Maggie's insight, the staging of the Opera, which
is a full multimedia event, has now been slightly changed
to include the true-life reality of contacting MIR. Was the
opera based on the Maggie experience? Well its librettist
Tony MacGragor claims this is not the case and that it was
a work of fiction.
The obsolete MIR Space Station met a fiery end when it was
deliberately plunged into earth's atmosphere in March 2001.
From WIA
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Bunyip State Forrest Trip Postponed
The one-day four-wheel-drive adventure in the Bunyip State
Forest area scheduled for Saturday the 13th of November has
been delayed for at least a week due to an unrequisitioned
mud excess. After all this rain we have had, the tracks are
as slippery as a greased ice cube on a hot bowling ball!
We need at least four consecutive dry days before entering
the forest, otherwise we just get really, really dirty and
damage the tracks in the process.
It
is likely that we will have a go-ahead on Saturday the
20th of November – but
please confirm this at the General Meeting night on the
19th.
The plan is to rendezvous out the front of Gumbuya Park
at 9:30am, and explore the forest area to the North for a
few hours. There will be a scheduled lunch at a picnic area
at the half-way mark. (open-fire barbecues, picnic tables
and toilets are present at this site)
A path has been selected that would be regarded as light-to-medium
difficulty, so any four wheel drive vehicles should be ok.
A trail map will be provided to each vehicle group.
Call Ian VK3BUF on 5625 2545 if more details are needed.
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Club Shack Report
The project is coming along well with the
interior being painted out - almost as you read this article.
The work benches
will be mounted and covered before the end of the month.
We have had some difficulty in organising the electrical connections because
of the poor condition of the wiring available at the adjacent Guide Hall, but
this appears to have been resolved and we should have power around the first
week in December.
Water connections have also been organised for the same period, so we should
be flushed with success before Christmas.
Reg VK3UK and Jenny have spent some time preparing and re-painting a collection
of chairs to be permanently left in the Shack. These were kindly donated from
the Warneet Boat Club via Mike VK3 KTO.
The RFID electronic tag access system is still being developed,
but it is slowly taking shape. This will eventually allow
members to call in and operate from the shack at their own
convenience.
KEEP WATCHING AND LISTENING FOR DEVELOPMENTS
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Lithium
Ion Batteries – Tasty But
Deadly
By Ian Jackson VK3BUF
There
are lots of new electronic products out there which include
Lithium-ion
batteries as a power supply. But for
all of that, not a great deal is known about them. They have
become popular because of their high energy density. That
is to say that you can jam a lot of energy within a very
compact area, for very little weight. This makes them ideal
for portable transceivers, cell phones and digital cameras.
Almost twice the energy for half the weight/volume as traditional
nicad cells. They also have really low self-discharge rates.
(about half the rate of nicads) which makes them great for ‘emergency
standby’ equipment.
However, if you are thinking of getting some to stuff into
an old radio or appliance, then think again. They are a bit
of a bugger to charge. They don’t
behave the same way as any of the regular rechargeables, so put your old charger
away.
* For a start, you can’t charge them until a certain terminal voltage
is reached, like most other cells. A nominal 3.7V cell should be charged to
a 4.2V rail, but it will reach that voltage level and still only be half charged!
* If you apply too high a terminal voltage you will permanently blow an integral
over-voltage fuse inside the cell.
* If you charge at the right voltage, but for too long (such as with trickle
chargers) the internal chemistry moves around and Lithium finishes up re-plating
itself on anode, followed by internal gassing and (ultimately) fire.
* You can’t fast-charge them. Chargers that say they can, usually only
achieve a 70% charge at best. (Typical charge times are 3 hours)
* They should not be charged in sub-zero temperatures, or beyond 45º.
(at 100º they will blow an internal safety fuse)
* If you over discharge them, they will have a very short life. (never take
the cell voltage below approx. 2.3V )
* You can’t measure state-of-charge by measuring terminal voltage. The
voltage varies too much with ambient temperature and individual brands of cells.
(rule of thumb ~ 3.7V is roughly a half-charge, but don’t put money on
it!
So,
after that list of ‘don’t’s’ you
may well be wondering how they are charged.
The trick is to manage them with a microprocessor so that
the average punter can do their worst, without exposing the
cells to harsh conditions. A cell
should have 4.2 volts applied, then take a snapshot of the incoming current
level. Keep on charging until the current demand has fallen to about 10% of
the originally applied level, then halt the charge. The micro should be monitoring
output current and voltage and temperature to prevent excessive charging & flattening
of the cell.
Most modern appliances designed for use with Lithium ion cells have an integral
microprocessor to manage all of this for you. Just be warned that if you try
to replace them with nicad/NmHi/lead-acid or dry cells, or conversely, if you
put a Lithium ion cell into an old appliance, be prepared for a dishonourable
discharge.
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Milestone in global communications
The first direct two-way radio communication from Australia
to the United States occurred 80-years ago on the third of
November, 1924. Walter Francis Maxwell (Max) Howden, A3BQ,
contacted a William L. Williams U6AHP of Pomona, California,
using Morse code wireless telegraphy. A3BQ used a wavelength
of about 83 metres running 130 watts into a single Z4 valve
transmitter at his home in the eastern Melbourne suburb of
Box Hill. The antenna consisted of six wires, 65 feet long
and 80 feet above ground.
The first trans-Pacific QSO was a very significant achievement
at a time when radio amateurs were seeking to prove that
long distance communication was possible on short wavelengths
that governments had considered to be useless.
Nine days later on the 12th of November 1924, Max Howden
achieved the first Australia to Great Britain two-way wireless
telegraphy contact with E. J. Simmonds, G2OD, in Buckingham,
England.
The testing continued and another breakthrough came on the
10th of February 1925 when A3BQ made the first two-way radio
telephony or voice communication with G2OD in England. Another
world first.
The efforts of the late Max Howden VK3BQ and many other
pioneering radio amateurs of that era, both the southern
and northern hemispheres, significantly added to the knowledge
of communications. At the same time they heralded the arrival
of international Amateur Radio. It led to the rapid development
of radio in terms of inter-continental and global communications
and opened up the shortwaves for broadcasting, international
wireless telegraph and many other uses over long distances.
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No eagerness to roll out BPL
The Boston
Globe newspaper in the US has run an article on industry
analysts' and power utilities' views of broadband
over powerline - and it identifies a current lack of enthusiasm
for the enabling technology. An article headlined "Utilities
take pass on offering broadband" reports on the recent
FCC announcement that it is convinced that electric-power
lines can become a revolutionary new way to deliver high-speed
Internet access, and unleash competition for cable and phone
giants.
However an industry analyst with The Yankee Group in Boston,
Matt Davis is quoted saying "You also need to talk about
whether there's a business model for coming in late with
what is basically a me-too broadband service."
The
Boston Globe article points out that the nearly 160 power
companies
remain overwhelmingly skeptical. Dozens have
tried out "broadband over power line" systems.
Only one, Cinergy Corp in Cincinnati has moved ahead with
a significant commercial rollout, so far attracting barely
1,500 subscribers.
- Spectrum Digest, Roger Harrison VK2ZRH
From WIA
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JOTA 2004
From the first time I heard that
JOTA 2004 was going to go back to its roots I felt happy.
Dave Campbell 's conversations
with the Guides resulted in an "Amateur Radio" only
JOTA. Why did that make me happy?? It's simple. I don't like
computers! Or should I say, the software that is written
for them sometimes doesn't make my life easy. Radios are
in a class of their own. For starters they don't have a Control –Alt-Delete
to press, and they don't have a 17" screen to tell you
that you have an "ERROR 404". Radios have been
with us from before I was born and are still here.
The reduced operating time for JOTA gave me a second reason
for being happy.
I was in Cranbourne at approx 8:00 AM with my camera in hand
(35mm NOT digital), snapping away at motorcycles of every
size and shape and colour imaginable. A small display of
street machines was on display. I would have liked to see
more there but it is a day for motorcycles I suppose… I
bumped into some friends who were taking their new BMW touring
bike for a run to Philip Island. They posed for the mandatory
happy snaps before saddling up for the ride. When the flag
dropped, it was a visual, audible feast! Even a blind person
could identify the origin of the bikes from the distinctive
sounds they make. One and a half rolls of film later, it
was back to the hall.
Mike,
Peter, Max, Helmut & Dave were there starting
to set up and in no time, we were in the trenches battling
with Guides that over the years, new that there were boys
on the other side of the airways.
Some of the re-offenders have become quite proficient at
radio operation and after spending some time with Jan VK3NOV
on the morse key, could easily be on their way to getting
a foundation licence!!!
This year, I encouraged parents and Guide leaders to have
a go with the microphone and it was a success. Not surprisingly,
as the ambient noise in the hall was very kind to working
the waves. Nice long QSOs were taking place and at last,
the transceivers were showing what amateur radio is all about.
Signals were up and down all afternoon, but between the
three transceivers that we were operating, and the Morse
key, there was something on the go to keep everyone occupied.
It was good to have members on standby to take over operations
when a break was required. Derek VK3MLQ was on hand to pass
on his vast experience to the young operators, one of which
was showing sign of sleep deprivation.
Once again we were well looked after by the Guides and their
culinary delights, and when it came to 4:00 PM, the plug
was pulled and we left the Guides to carry on with their
weekend.
Many thanks to all the members that turned up on the day
to make JOTA 2004 a success.
Bruno Tonizzo VK3BFT
Error
404………
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Strays
Gutter Immunity, or How To Desensitise Your Kid.
As a very young child – a long time ago, I could always remember travelling
down Warrigal Road, somewhere near Heatherton and seeing Dales knackery and
being told by my grandmother “that was where they sent the old horses
for the glue factory” and I feeling rather disturbed at the thought.
Dales incidentally has now long gone and the land swallowed up by suburbia
and horses are not sent to knackeries to be turned into glue.
Nevertheless during my working life I found myself by accident rather than
design doing my fare share of inspectorial work at knackeries and abattoirs.
One thing I did learn very quickly that although an abattoir or knackery was
the end of the road for a beast it was certainly a great crossroad of humanity.
They were all there from the astute businessman to the drugged up impoverished
alcoholic, from the University graduate to the High School drop-out. Anything
can happen, and usually does.
As I grew older and wiser whilst training new prospective inspectorial staff
always requested that they come with me as an introduction into how the other
half live; or perhaps it was the entertainment I got from their reactions.
Jane was new to the job, it was quite a hot day and I had to make an unscheduled
quick stop at the local knackery to collect some paper work. We made our way
through the carcasses and carnage that littered the floor all complimented
with the odour and flies; I mean the restaurant scene from Monty Python’s “Meaning
of Life” had nothing on the sight that greeted us. There, in the middle
of the floor was the proprietor’s young son – a boy of about three
years old, grubby little face, lovely little smile and sucking on a “chock-wedge”.
The ice-cream from it was melting, running down his arm and dripping off his
elbow into the blood on the floor.
As we drove away all Jane could say was “that poor little boy, that poor
little boy”. That poor little boy? He was as happy as a pig in a poke,
I mean what more could a little boy want on a hot day than a “chock-wedge”?
Nothing else mattered at all.
The last time I saw that little boy was a school holiday
time only a month or so before I finished up with Primary
Industries. Of course by now he is much older but nothing
had changed.
There he was again in the middle of the works floe, sitting
on a dead cow this time, squirting one of her teats towards
himself and trying to catch the milk in his mouth. His father
looked up, “get out of it you dirty little devil” he
yelled. “But it’s fresh” was the lad’s
reply, “you shot her”!
I returned
to the office. “I have just come from the
knackery” I said “and I have just seen something
that has turned me off milk for life” I chuckled. “We
don’t want to know, we don’t want to know” was
the response.
Graeme VK3BXG
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