Tag Archives: 2M

Science Alive! 2013 Flyer

Science_Alive__2013_flyer_front

Download the flyer and print it off and pass around to friends, family, etc and hope to see you there.

Organisation involved
University of Adelaide
Dept for Manufacturing, Innovation, Trade, Resources & Energy
Flinders University
University of South Australia
Forensic Science SA
BAE Systems Australia
Australasian Radiation Protection Society
The Curiosity Show
Australian Institute of Food Science and Technology (SA)
Coastal Concepts
Engineers Australia
Goyder Institute for Water Research
SA Water
SARDI
The Australian Society for Medical Research
South Australian Neuroscience Institute (SANI)
Australian Science and Mathematics School
Novatech
Royal Australian Chemical Institute
Reef Watch
bugs n slugs
Nature Education Centre
Arid Recovery
Animals Anonymous
Elizabeth Amateur Radio Club
Hackerspace
Giant Games
Vital Veggies
VACANT
Astronomical Society of SA
Voxiebox
Nutrition Society of Aust
Growing More Than Trees Project
Malacological Society of SA
Microscopes and More
The Young Scientists of Australia, Adelaide Chapter
CSIRO Education (Friday)/Double Helix (Sat & Sun)
Science Alive! Showbags (Saturday & Sunday only)
Institute of Backyard Studies
The Fly
Dan Burt the Pianola Man
SciWorld
Australian Dalek Builders Union
Imagine If
Physical Prints (3D printing)
Adelaide Electric Vehicle Association
Plaster Fun House
Adelaide Magic
ZigZag Circus
ANSTO
The Beer Show (Friday Night)
Jesse Deane-Freeman (Friday night)
Deane Hutton’s Magic Show (Friday night)
Rob Morrison’s Jazz Septet (Friday night)
SciWorld Stardomes
Robotics Workshops (Uni Adelaide & Flinders Uni)
YSA Buskers
Solar Panel Tours

Science Alive! 2013

About:
Australia’s largest science expo event with spectacular science, animal and magic shows and a huge range of hands-on fun for all ages. Archaeology and antiquity, Human body and movement, Energy and transport, Environment and nature, Health and medical, Space and astronomy, Innovation and technology

Where:
Goyder Pavilion Adelaide Showground, Goodwood Road, Wayville, SA, 5034

When:
Friday 9th August – 9am-3pm Careers Day for high school students and their teachers
Friday 9th August – 5pm-7pm National Science Week Launch, Goyder Pavilion
Friday 9th August – 7pm-11pm Science Alive! Cabaret, Goyder Pavilion
Saturday 10th & Sunday 11th August – 10am-4pm Science Alive! public event

for more info refer to:
http://www.scienceweek.net.au/science-alive/

As part of a booth organiser for the Amateur Radio & Electronics booth this year we are planning to be more hands on and are going to have a remote station that we’ll have access to in country Victoria we can us to access and transmit on the 40m band via the internet, which we’ll allow the public to make contact with other stations to get a first hand fell to what one aspect of amateur radio is about.

Also hoping to have some IRLP action going to via the VK5RAD 70cm repeater.

VK5 Local Beacons

If your interested in testing the at accuracy of you your transceiver on 6/2/70/23/SHF there are beacons setup in around Mt Lofty (VK5VF) and the Elizabeth Water Tower (VK5RLZ) which you can listen to and they are on the following frequencies

VK5VF
6m = 53.3200 GPS locked
2m = 144.4500 Crystal locked
700mm = 432.4500 GPS locked

VK5RLZ
230mm = 1296.4520
SHF = 2403.4520
SHF = 3400.4520 proposed
SHF = 5760.4520 proposed
SHF = 10368.4520 proposed
SHF = 24048.4520 proposed

The GPS locked beacons accuracy will be in the order of 1000th of a hertz

[PART 4] 3 element 2 meter band Yagi conclusion

Well this is the conclusion after having bit of a play and a fiddle with this 3 element Yagi that I built based on VK5JST build notes. For a 3 element Yagi it is rather directional of about 45 degrees, and very deaf at the back which is a good thing for some setups. Overall it is a rather unusual design with characteristics of much larger Yagi’s for the same band. I have been able to get 1.2/1.3-1 SWR on my Yagi for 146Mhz which I am rather chuffed with and had a good QSO into the VK5RHO repeater from my place. I could probably get better SWR if had a network analyzer to see exactly what the Yagi is doing over 144-148Mhz 2M amateur band.

This Yagi was well worth the time it took to build.

[PART 3] 3 element 2 meter band Yagi construction finished

Well today I made the gamma section for my Yagi and mounted it and also added rubber bits for the ends of the elements and end caps for the boom. I have done a quick test of the Yagi with a 10pF capacitor and the SWR is ~1.5-1. I got a couple air variable capacitors I going to put on the Yagi to better tune it. As it was a lovely day most my work was done outside on the deck. :-)

3 element 2 meter band Yagi construction

This is a 3 element 2 meter band Yagi design by VK5JST that I am giving ago to make. The only difference is I am using 12mm OD round and 19mm OD square aluminum (as it what had around from another project) and I have used 3.2mm dia x 4.5mm long aluminum rivets to hold the elements to the the boom. All I have left to make is the bracket to hold the gamma rod and the bracket for the connector and drilling the holes for the v/u bolt assembly.

The pictures below are where have got thus far.


and yes that is the kitchen table I am working on, ssh don’t tell anyone. hehe

Wouxun KG-UVD1P Dual Band HT

I bought one of theses Wouxun dual band HT off of eBay a month back for bit over 100USD which amounted to around 99AUD. The unit didn’t come with any extras like 1700mA battery or USB programming cable as sold by others on eBay.

Down side is the HT is pita to program off of the keypad till you get used to it, altering power setting etc to a channel already saved is a pain as you have to delete the channel and re enter it. I ended up buying a USB programming cable off of eBay for the HT and it makes the programming of the HT a lot easier and faster. The other is the SMA Female antenna connection, as if you want to use a external antenna you have to make or buy SMA female to BNC female adapter, which are also sold on eBay for couple dollars each.

As I use Linux, I have been lucky as there is a Linux program called OWX, which is a command-line program for programming the KG-UVD1P and others. As I didn’t do the make install part of the compile/install of the OWX program, here is an example of how I use the program to do what is explained in the OWX documentation.

./owx -c check -p /dev/ttyUSB0
./owx -c get -p /dev/ttyUSB0 -o radio/original.bin
cp radio/original.bin radio/backup.bin
./owx -c export -i radio/original.bin -o vk5-repeater-list.csv
cp radio/original.bin radio/vk5-repeater-list.bin
./owx -c import -i radio/vk5-repeater-list.csv -o radio/vk5-repeater-list.bin
./owx -c put -p /dev/ttyUSB0 -i radio/vk5-repeater-list.bin -r radio/backup.bin

Overall the Wouxun KG-UVD1P is a rather good and not bad for the monies, feels sturdy and comfortable to use, it be a good starting out HT for beginners to Amateur Radio. I would also recommend if getting this HT to get it with the USB cable and the 1700mA battery.

References:
Programming the Wouxun KG-UVD1P – this make programming the from the keypad a lot easier to understand well worth the read.
Open Wouxun (OWX) – Linux command-line program
VK5 2M/70CM repeater list for KG-UVD1P – CVS file to used with OWX