he club's VK4RAX Repeater has had a major upgrade. The Kenwood commercial repeater, was purchased and now owned outright by the club, this was achieved by club fund raising, donations into the club and club membership.
The repeater is located along the Summit Line of Mt Cotton giving an elevation of approx 273Mts ASL with GPS coordinates of -27.61725915, 153.2155683 (locatable on Google Maps) with coverage from Ballina NSW up to Sunshine Coast Queensland and out past Toowoomba.
The repeater was installed and maintained by Peter Kohlmayer VK4LC, and work on the site was done by Peter vk4lc, John vk4jdf, Martin vk4jvc. There was around 3 hours work which also included installing antenna's, cables and installation of two racks. to mount the repeater.
Donated by Martin these racks hold the two repeaters VK4RAX in regular use and Peters repeater VK4RPT that is getting good use.
VK4RAX operational Frequency is 147.075 Mhz with a + 600 offset and and VK4RPT is operational on 438.250 with a -5.4Mhz offset VK4RPT digital APC025
We are now in the process of updating the Antennas to two Folded dipoles and this is being done as a club Project, which will enable us to replace the aging Colinears that are currently in use on the Tower.
if you are interested in becoming an Amateur radio operator and would like to become a member of this growing club please contact us via this Webpage
If you prefer contact via other media here are additional Links
1) email the club direct at the Drop down menu on the side
2) QRZ.com VK4WSS email link available to QRZ members
3) Via the WIA website Southside amateur radio society.
4) Facebook @ southside amateur radio.
We also have a Regular Club Net, held every Tuesday night on the 2Mt repeater VK4RAX starting at 7:30 Pm and run by various members of the club
Future developments we are looking at for our new site 10Gighz Beacon, 2.4gig data link, Amateur TV just to name a couple
Past Office Bearers.
VK4EU Wayne Staples Pesident
VK4XCS Clem Skerman President
Southside Amateur Radio Society would like to thank all concerned for a job well done and welcome new members..
This node is run by vk4blp in the Jimboomba Woods estate in Jimboomba, elevation ~90m ASL.
145.400 MHz Simplex - no CTCSS
Now also Echolink node 672767
The node regulary retransmits news and other items of interest to radio amateurs.
If you would like to see something else on, or at a different time, please contact us via the Contact form.
Full listing of what is on below.
|RSGB News||ARRL News
|1200||WIA National News
|2100||WIA National News||WIA National News
||WIA National News|
RE: WATT THA ( 3.9KVA 13.8 VOLT DC POWER SUPPLY) built by VK4XCS
This power supply was built along the lines of the VK4EU schematic on this web site.
VK4EU is one of the founding members of the club.
Some variations were employed in the build up due to the large amount of amperage available.
WATT THA as it is known is a 3.9KVA power supply all this is available if the A/C was three phase as the input would be re-configured.
At present settings it has been tested to100+ APMS across 4 x 12 volt batteries for 4 seconds these batteries remained charged for 3 months and no smoke wow.
The transformer has dual windings on the output 1/2 inch in width each and 1/8 of an inch thick (out puts in total 4 2pos 2 neg)
This can be seen in the pictures
The smoothing caps are 22000uf each by 10 of = 220,000UF close to ¼ of a farad, one would suggest ample smoothing of the DC
There is a 10 AMP AC circuit breaker on the input.
A 70AMP circuit breaker on the DC output compliments of the car sound industry which has been tested and works at 13.8 VOLTS via my THP HL700B into a dummy load of course.
There are 10 transistors capable of 20AMP each to drive up the amperage with another one as a darling ton driver.
This supply is variable total volts out are 26 DC at the transistor pack and uses an LM317K to vary the voltage supply.
4 stud mount rectifier diodes are employed for rectification at 120 AMPS each.
The AC volts gauge is from a factory that was demolished and the AMP gauge was from the same demolition.
The DC volt gauge was one I had in my junk box picked up at a ham fest somewhere.
The cooling fan is AC from a soccer game where the ball return was air to eject the ball to be used again.
The cabinet was from the original transformer where it served as a forklift battery charger.
One of the tests that were performed was to see the voltage drop at 13.8 at 30 AMPS it was.001 of a volt making it very stable.
Thank you for viewing my supply as I am quite pleased with the results.
It has been said that the lights dim in my area when WHATT THA is in use or that I should DC power my house HA! HA!
Located in Logan City 22km south of the Brisbane CBD, the Southside Amateur Radio Society Inc. was formed in 1993 by a handful of Amateurs who saw a need for a club that could cater for Amateurs in the local area.
Currently the Society enjoys a strong and growing membership, including Amateurs Short Wave Listeners and CBers.
Some Of Our Achievements.
* The Southside Amateur Radio Society provides transmitting facilities during Jamboree Of The Air (JOTA), an annual event that brings scouts together from all over the world.