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VK7AX > BCAST 10.03.24 06:13l 551 Lines 27691 Bytes #67 (0) @ WW
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VK7 Amateur Radio News 10Mar24
Text edition:
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VK7 AMATEUR RADIO NEWS BROADCAST
FOR SUNDAY 10th March 2024
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Welcome to the VK7 Amateur Radio News and this was first broadcast on Sunday the 10th March 2024. At the mike of VK7WI this week is Rick, VK7RI.
On Sunday this broadcast goes out on repeaters all over VK7 and on digital radio - DMR Talk Group 5 and D-Star Reflector 91C by Clayton, VK7ZCR.
We go out on medium and high frequency courtesy of the following rebroadcast stations:
On 1.862 MHz by Graham, VK7GS,
On 3.670 MHz by Ross, VK7ALH
On 7.140 MHz by Garry, VK7JGD,
On 14.130 MHz by Any Takers,
On 28.525 MHz by Tony VK7VKT.
UHF CB Channel 24 in the Hobart area - Mark VK7FMAC.
You can hear this broadcast again on Tuesday night at 8:00pm on repeaters VK7RAA in Northern VK7 and VK7RHT in Southern VK7.
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Contest News
John Moyle Memorial Field Day Contest
The Field Day will be held next weekend of the 16th-17th March 2024 and will run from UTC 0100 on the Saturday to 0059 on the Sunday.
Loggs need to be submitted by midnight 14th April 2024.
The aim of the contest is to encourage and provide familiarization with portable and field operation, and provide training for emergency situations. The rules are therefore specifically designed and focused to encourage field operations.
The contest is run each year in memory of the late John Moyle who was a long term editor of the Wireless Weekly, (later Radio & Hobbies - later Radio Television & Hobbies) from 1947 until his untimely death in 1960.
He served in the RAAF with distinction and was responsible for a number of innovative solutions to keeping radio and radar equipment working under difficult wartime and working conditions.
Although the contest is primarily for portable or field operators, home stations can take part using a different scoring system.
The contest is open to all VK, ZL and P2 stations. All other stations are welcome to participate, but can only claim points for contacts with VK, ZL and P2 stations. All VK, ZL and P2 stations can claim points for all contacts, with any station in the world, as long as valid serial numbers are exchanged.
Single or multi-operator portable or home entries can be 24 or 6 hour using Phone, CW, Digital or All modes and can be on HF, VHF/UHF or All Bands.
Multi operator stations are not permitted in the Home Category.
Most logging programs - VKCL and N1MM cover the field day rules.
73, WIA Contest Committee
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Tassie Ham Conference
Save the Date
https://www.reast.asn.au/news-events/tassie-ham-radio-conference-and-expo/
Friday 1st, Saturday 2nd and Sunday 3rd November 2024 are the dates for the next Tassie Ham Conference.
After the very successful 2022 event and the fantastic feedback we received from the event, we are holding the next one on the first weekend in November 2024.
The event will be a slightly different format with one and half days of presentations, activities and fun!
We are not going to hold a ham expo on the Sunday and finish up proceedings at lunchtime on Sunday to enable our interstate and overseas attendees to fly/drive back home.
REAST will again be holding a social evening and BBQ at the REAST clubrooms located at the top of the Queens Domain on the Friday evening.
Saturday 2nd and 3rd of November 2024 will be an Amateur Radio Conference with a full program of presentations, activities and fun!
The location will again be the University of Tasmania Sandy Bay Campus.
Watch the conference website for details of the presentations and details as they come to hand.
https://www.reast.asn.au/news-events/tassie-ham-radio-conference-and-expo/
Our previous VK7 Ham Conference presentations are available on the Ham Radio DX YouTube channel playlist.
https://www.youtube.com/watch?v=Arb2ywWSwLs&list=PLSuX83ay4OujogylrO6FQRw6c2vM5JeFa
There will also be many wonderful and impressive raffle prizes that will be drawn across the weekend.
73 Tassie Ham Expo Organizing Committee
tassiehamexpo(at)gmail.com
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Statewide News
QSL Update
Report - from Herman VK7HW Manager of the WIA VK7 Inwards QSL Bureau
If you live near another Amateur and can collect and deliver their cards to their QTH that would be a big help. Let Herman know if you can assist.
The current list of cards held as at 23 February 2024 is in the email version of the broadcast.
If Herman is holding card(s) for you and you would like them mailed to you rather than being delivered on an opportunity basis please send Herman some stamps.
If you have any questions re QSL cards, please contact Herman by email. herman(at)ozemail.com.au
73, Herman, VK7HW, WIA Manager VK7 Inwards QSL Bureau
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Cards held at 16 February 2023 ( Any errors in the listing are mine, Herman sometimes misses culling a call sign)
AAA, AAD, AAH, AAP, AAR, AB, AC, ACE, ACG, ACN, AD, ADE, AED, AG(2014), AGC, AHT, AIR, AJC, AKK, ALZ, AM, ANC, AO, APZ, AS, ATH, AXZ, AY, AZ
BA, BB, BBB, BPV, BT, BYE
CA, CBK, CBR, CEJ, CH/T, CEJ, CJ, CMV, CV, CX
DD, DN, DO, DP, DQ, DY, DZ
EA, EG, EI, EK, ER
FADZ, FALX (alx), FAZZ, FCIA, FF, FG, FGGT, FLAR, FPRN, FRJG(RG), FTAS
GA, GEL, GGZ, GM, GOP, GR, GW
HBR, HCH, HDX, HL, HOB, HRS, HSA, HSD, HSJ, HVK, HZ
ID, IK, IS
JA, JAZ, JCR, JJ, JOK, JP, JW
KAC, KBA, KD, KDO, KI, KJ, KJL, KKR, KL, KO, KRJ
LDH, L J, LL, LLL, LM, LT, LVH, LW
MA, MAG, MBD, MBP, MC, MEL, MET, MHZ, MJ, MRS, MS
NA, NC, ND, NEC, NFI, NIK, NRF, NRT, NSE, NSS, NTE, NVH, NWQ
OB
PAF, PBD, PM, PRN, PSH, PSJ, PSZ, PW
QK
ROY, RJ
SN, STO, SV, SZ
TCE, TED, TK, TL, TO, TS, TUX, TX, TZ
UT,
VA, VAC, VAO, VAZ, VDC, VEK, VH, VR, VTM
WA, WC, WH, WIA, WL, WO, WT, WUU
XDM, XTC, XV, XX
YN
ZA, ZJJ, ZK, ZM, ZT
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VI7ALARA Cards for QSO's with VK7's
Note * - There are a few OS cards amongst the ALARA cards for VK7's.
AAE, AC*, ALB
BO*
CMV
DD*, DG*, DHT, DT
EK, EV
FKLW, FMI
HAM, HCK*
IAN, ID
JFD
KAM, KPC, KT, KW
LA
MAT
NB, NET*
OT
PSJ
RG*
STO
TPE
VKT
WN, WUU
YUM*
ZA, ZGK, ZPE
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Statewide News
Thursday Night SSTV Nets
Another busy net night that saw the following participants, VK7s – DMH, ZAB, FGGT, ZGK, TW, ZSB, EV and ZIR all sharing nearly sixty photos.
This weeks theme was “pets and animals”.
A pet rock. The rock has a curled up cat painted on it
Cute kittens, happy and grumpy cats
Cats that want to scratch you or not go to the vets
A cat with a fiddle
The Cat in Red Dwarf
Catbert an evil director of Human Resources
Pigs in space
“Laika” the first dog in space
Pet and working dogs
101 Dalmatians, the musical
Animal Farm by George Orwell
Animal, the drummer from the TV Muppets Show
The rock group The Animals
An animal using a computer work station
A white horse, ED the talking horse and a very thin horse
From TV – The Pink Panther, Bambi, Rocky and Bullwinkle
Birds including an ugly one
The Big Prawn and a ugly fish
A goat, a bull and animals in the wild
And what does government and buses have in common?
Remember Ken VK7KRJs and Steve VK7OOs fully automatic 24/7 monitoring sites that allows anyone who has sent an SSTV picture the ability to check them on their pages almost immediately, any time, both South and North Tasmania.
Also if you missed the net there are archives of all SSTV nights. These photos can be seen on Kens and Steves SSTV websites or on NTARCs website under blogs and arranged as weekly nets.
There is no theme for next weeks net.
https://vk7oo.tasme.com/vhfsstv
https://sstv.vk7krj.com/scrolling%20web%20gallery.html
https://www.ntarc.net/blogs
73 from Andre VK7ZAB
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NEWS FROM THE NORTH WEST
North West Tasmania Amateur Radio Club Meeting
The next club meeting will be commencing at 1.30pm on Saturday 6th April 2024 at our usual venue, the Scout hall, 73 Alexandra Road, Ulverstone. afternoon tea will also be held.
Members are encouraged to bring items for show & tell, and club rooms are open till 6pm for members to socialise.
A small plate of afternoon tea would be appreciated, We have Tea, Coffee etc available for members and guests,. Visitors are most welcome to attend.
If you have any cold or flu symptoms , or are unwell , or been in contact with a confirmed COVID case, then please do not attend the meeting.
73, Eric VK7EV, News Officer, NWTARC
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NEWS FROM THE NORTH
SOTA/WWFF PARKS GROUP
The Summits On The Air/World Wide Flora and Fauna parks group meets twice weekly – Mondays and Fridays 10.30AM till 12.00 at the Glebe Gardens Cafe, Henry Street, Launceston.
For more information contact Al on 0417 354 410.
73, Al, VK7AN
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Northern Tasmanian Amateur Radio Club Incorporated
www.ntarc.net
We start this weeks happenings with the Wattlewood Park Equine Endurance Ride. This saw some of our members heading off in the Sassafras direction at 4 am last Saturday morning for the events early start. The day was successful from the providing of communications point of view and also because no emergency assistance was required for any of the horses or riders participating in the event. The weather was windy and cool in the morning until the sun finally decided to rise, then the wind died down and the rest of the day was warm and pleasant. Luckily the organisers placed our communications trailer next door to the canteen trailer, making thing easy for a quick coffee or egg and bacon roll, hihi. Thank you to VK7s Roger ARN, Stuart ES, Fran, Rosco RC, Peter SP, Andre ZAB, Idris ZIR, Tony ZTT and Stefan ZSB, who attended on one or more days transporting equipment to and from, setting up and on the day.
Thanks also to Rick VK7RI, from the north-west for volunteering to help swell the NTARC numbers on the day and manning one of the checkpoints.
Now for a much more leisurely change of pace. Last Wednesday evening saw the NTARC club rooms opening for the specific purpose of members getting together and partaking of a live visual presentation on the REAST YouTube channel.
The doors were opened at seven and saw a small trickle of members coming in, getting a drink, a piece of cake or two and being seated by 7:30 for the start of the presentation.
I am not going to steal REASTs thunder, but suffice to say the actual presentation was fascinating and extremely enlightening. I am sure it will be covered later in this broadcast.
The presentation started right on time and lasted for about an hour and a quarter. We even ended up clapping in appreciation to Mars for her excellent presentation, silly I suppose as it was only a one way link not like a Zoom session where we could contribute audio. But with the large screen TV you were immersed in the event and felt you were there. Anyway Mars certainly deserved the applause.
The general discussions about the topic continued for about half an hour longer, then we all dissipated into the night.
The committee will run these special live YouTube watchings for a while to gauge our members enthusiasm towards the concept. From this initial night it certainly seems to be an idea worth pursuing.
The next one will be held on the 3rd of April, once again a Wednesday evening with NTARC club room doors opening by 7pm for a 7:30 start. It will be on the history of universal co-ordinated time.
As always, pictures will be available on the NTARC Web site under “Blogs” for this broadcast.
https://www.ntarc.net/blogs
Mug Order - yes, we are talking about the white mugs for drinking out of, those that have our club logo on one side, personalised with your name and call sign on the other. We are placing another order so if you would like one then please see André at the Friday coffee mornings or at the Wednesday bi-weekly club Technical Nights. Those members who have already requested a mug, please email secretary@ntarc.net to confirm order, and anyone else who wants one please specify what name is to be printed above the call sign. The final price will be about $12 depending on eventual quantity ordered.
UPCOMING EVENTS
TestNet and TechNet session - Every Wednesday, TestNet/CW course on 3.580MHz from 7pm till 7.30pm…. and a TechNet on 3.567MHz from 7.30pm till about 8.30pm. Your host for the evening will be Nic VK7WW.
Coffee Morning - held every Friday in the NTARC Club rooms. Time is from 10am to noon and we look forward to seeing you all there. So why not pop in and join us for a cuppa, there is endless tea and coffee along with biscuits available for a donation.
Club Room Technical night session - The next session will be on Wednesday the 13th of March and will commence at the usual time of 6.30 pm, running through to about 10 pm, at the Club room Archer Street, Rocherlea.
Finally - A reminder to all members that if you have any items of news you would like added to our weekly roundup, no matter how trivial, then please email them to the Secretary at the following address news(at)ntarc.net all items to be received no later than 5pm on the Friday prior to the Broadcast.
Thats all folks,
73 from Stefan, VK7ZSB, Secretary NTARC Inc.
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NEWS FROM THE SOUTH
Radio and Electronics Association of Southern Tasmania
https://www.reast.asn.au/
https://www.facebook.com/reasttas/
https://www.youtube.com/reasthobart/
March Presentation
Space Junk and Amateur Radio
https://www.youtube.com/watch?v=5zxlnfGxsBc
REASTs March presentation night was a fascinating presentation from Mars Buttfield-Addison who is a PhD candidate with UTAS and CSIRO, a computer scientist and science communicator.
The title of the presentation was Space Junk and the role Amateur Radio can play.
Mars took us through what space junk actually is and why we need satellites. This led to the space surveillance network, orbit types and some of the reasons we have not solved this problem.
What role does radio play followed with what do we do about it in Tasmania and we are world famous in radio telescope terms and what has amateur radio contributed.
There was a wonderful reference to the first time Sputnik was heard and it was by OTC at the Queens Domain - so our REAST clubrooms really is famous now for something else!
We went through the AMSAT, ARISS and SatNOGS programs and this led to the parameters around the gathering and classification of data into the repositories like the Unified Data Library.
There is certainly huge potential for amateur radio to assist in these endeavours. Mars then took questions and answers for about 30m.
A huge thank you to Mars and partner Paris who came along. Keep an eye on the Ham Conference presentations in November we might well have Mars coming back.
73, Justin, VK7TW
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April Presentation - Save the Date
The History of UTC and the Leap Second
https://www.reast.asn.au/news-events/upcoming-events/?event_id1=2095
REASTs April presentation night will be a fascinating presentation from Peter Pokorny VK2EMR.
This will be a humorous presentation about how universal coordinated time (UTC) came into existence and why we need Leap Seconds.
There will also be a very timely update from WRC 23 on Leap Seconds as well.
Peter attended the World Radio Conference 2023 with Dale Hughes and is a well versed in the ITU and WRC behemoth as he has been involved many years due to his professional maritime background.
It will be held on Wednesday night the 3rd April 2024 from 7:30pm in the Queens Domain Clubrooms and it will also go out on DVB/T RF and via the REAST YouTube Channel streaming service.
This should be a great night, see you there.
73, REAST Committee
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DATV Experimenter's Night
This week Tony VK7XTC is bringing along his cigar box guitar, valve amp and speaker to take us through the creation of cigar box guitars and hopefully give us a demo. There will also be a follow-up of some items held over from previous DATV Experimenters Nights. See you there or on the stream.
https://www.reast.asn.au/news-events/live-stream/
https://www.reast.asn.au/special-interest-groups/amateur-tv/
https://www.youtube.com/c/ReastHobart/
We stream the nights on the REAST YouTube streaming channel and we also go out on RF - DVB-T 7MHz Standard Definition on 445.5MHz. So, if you have a TV, Set-top box or USB DTV Dongle that you can tune and scan 445.5MHz and you can see the Queens Domain, then you have a good chance of receiving the DATV Experimenter's Night Signal. Look out for VK7OTC.
73, Justin, VK7TW
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Training and Assessments
Our next REAST training and assessment day is Saturday 27th April 2024. If you would like to book for the next session then please let Reg Emmett VK7KK REAST Learning Organiser know by phoning 0417 391 607 or via the REAST Website Contact Form.
https://www.reast.asn.au/contact/online-contact-form/
Check out the REAST Foundation Licence Training Videos that can be found on the REAST YouTube Training and Assessment playlist.
https://www.youtube.com/playlist?list=PLsnsP_zjw831mdC6sY4XqavRUY-53ZWUn
73, Reg, VK7KK
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Technology History News
Early Radiation Meters
Roger VK7ARN sent in the following story in relation to a recent DATV Experimenters Night report. I noticed mention of a Geiger counter, tested by Justin. It brought to front of mind my experience with a Geiger counter – an ex British government model, built like the proverbial, in a nice cream colour as I recall. Id picked it up in a surplus shop but it came minus battery and I was at a loss as to what voltage the thing ran off, so was unable to improvise.
I was working in geophysics at the time, about 1968, on a job in the English Midlands, and knew there was an RAF workshop in the area – which I believe is now the RAF Museum Cosford. So, with a drab green Land Rover full of Field Assistants and wearing a military surplus field jacket, I rolled up at the main gate and queried the civilian policeman on duty. He directed me to park up in the adjacent car park and come back to him, which I did, after telling the young guys in the Land Rover that Id be back shortly. The cop let me in and took me for walk through the base to a building where he directed me to a door and told me the guys in there would be able to help. I presented myself to the NCO on the desk and answered his questions - Who are you? What do you want? and How the hell did you get in here? He told another guy to guard me and went off, returning very quickly with an officer, who proceeded to interrogate me. I obviously didnt satisfy him, as I was marched off under double guard to the guard house and told to sit there and not move. Two hours later, I was freed and returned to the somewhat concerned assistants still awaiting my return.
Turned out that the key player, the civvy policeman who let me in, had gone off duty and was not to be found to confirm he had indeed let me in. Phone calls had been made to my office to confirm I was who I said I was and in the area for what Id said I was. It was a bit embarrassing later, saying what I was doing in a secret RAF base when I was supposed to be taking gravity measurements in the countryside. I did find out from the cop who finally freed me that it had been my misfortune to choose to try to obtain information, on what was obviously some sort of government instrument, when notice had been given to the base to expect a security exercise in the near future!
73, Roger, VK7ARN
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Technology News
CMOS transmitter taps into the 300 GHz band
Japanese scientists have developed a phased-array transmitter that overcomes several common problems of CMOS technology in the 300 GHz band, with its impressive area efficiency, low power consumption and high data rate highlighting its potential for several applications.
At present, most frequencies above the 250 GHz mark remain unallocated. Accordingly, many researchers are developing 300 GHz transmitters/receivers to capitalise on the low atmospheric absorption at these frequencies, as well as the potential for extremely high data rates that comes with it. However, high-frequency electromagnetic waves become weaker at a fast pace when travelling through free space. To combat this problem, transmitters must achieve a large effective radiated power.
While some interesting solutions have been proposed, it is challenging for a 300 GHz-band transmitter manufactured via conventional CMOS processes to simultaneously realise high output power and small chip size. Now, a research team led by Professor Kenichi Okada from the Tokyo Institute of Technology (Tokyo Tech) and NTT Corporation has developed a 300 GHz-band transmitter that solves these issues through several key innovations, as outlined at this years IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco.
The proposed solution is a phased-array transmitter composed of 64 radiating elements which are arranged in 16 integrated circuits with four antennas each. Since the elements are arranged in three dimensions by stacking printed circuit boards (PCBs), the transmitter supports 2D beam steering. As a result, the transmitted power can be aimed both vertically and horizontally, allowing for fast beam steering and tracking receivers efficiently.
The researchers used Vivaldi antennas, which can be implemented directly on-chip and have a suitable shape and emission profile for high frequencies. Another feature of the proposed transmitter is its power amplifier (PA)-last architecture. By placing the amplification stage before the antennas, the system only needs to amplify signals that have already been conditioned and processed. This leads to higher efficiency and better amplifier performance.
The researchers also addressed some common problems that arise with conventional transistor layouts in CMOS processes, such as high gate resistance and large parasitic capacitances. They optimised their layout by adding drain paths and vias and by altering the geometry and element placing between metal layers.
“Compared to the standard transistor layout, the parasitic resistance and capacitances in the proposed transistor layout are all mitigated,” Okada said. “In turn, the transistor-gain corner frequency, which is the point where the transistors amplification starts to decrease at higher frequencies, was increased from 250 to 300 GHz.”
The researchers also designed and implemented a multi-stage 300 GHz power amplifier to be used with each antenna. According to Okada, excellent impedance matching between stages enabled the amplifiers to demonstrate outstanding performance.
“The proposed power amplifiers achieved a gain higher than 20 dB from 237 to 267 GHz, with a sharp cut-off frequency to suppress out-of-band undesired signals,” he said. The proposed amplifier also achieved a noise figure of 15 dB, which was evaluated by the noise measurement system in the 300 GHz band.
The proposed transmitter was tested through simulations and experiments and obtained promising results, achieving a data rate of 108 Gbps in on-PCB probe measurements substantially higher than other state-of-the-art 300 GHz-band transmitters, the researchers noted. The transmitter also displayed remarkable area efficiency compared to other CMOS-based designs alongside low power consumption, highlighting its potential for miniaturised and power-constrained applications. According to the researchers, notable use cases could include sixth-generation (6G) wireless communications, high-resolution terahertz sensors, and human body and cell monitoring.
https://www.criticalcomms.com.au/content/radio-systems/article/cmos-transmitter-taps-into-the-300-ghz-band-74199125
Sourced from the Critical Comms Web E-Zine
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Regular VK7 gatherings and events over the coming months:
Regular gatherings:
Sewing Circle Net – Daily on 3.640MHz commences at 6:30pm ADST.
Statewide SSTV Net - held every Thursday night via the North/South Link on VK7RAF/VK7RJG from 7:30pm. In the North and North West - VK7RJG on 438.55 -7MHz and in the South - VK7RAF (146.650 -600kHz) CTCSS tone 141.3Hz to link RAF North-South.
State-wide – MICROWAVE QSO Party – following the Sunday broadcast call-back on 1296.15 MHz FM. One group in the greater Hobart area and another in the greater Launceston area.
Then North-south digital contacts on 1296.2MHz using Q65-60B.
Stations in the Launceston area transmitting on the odd minute. Southern stations on the even minute.
SOTA/WWFF Group – Meeting Mondays and Fridays 10.30-12.00 midday at Glebe Gardens Cafe, Henry St, Launceston.
NTARC - TestNet and TechNet sessions every Wednesday night. TestNet/CW course on 3.580MHz from 7pm till 7.30pm…. and a TechNet on 3.567MHz from 7.30pm till about 8.30pm
NTARC Coffee Mornings held every Friday in the NTARC Club rooms. Time is from 10am to noon in the Rocherlea Clubrooms.
NTARC - Club Technical nights - Wednesday the 13th March and will commence at 6.30 pm through to about 10.00 pm, at the Club room Archer Street, Rocherlea.
NW VK7 – Wednesday from 8:00pm local – NW Tassie Amateur Repeater Group Net on VK7RMD
NW VK7 - Thursday commencing at 8:30pm local - N.W. Tassie 2m DX Net 144.190 USB
NW SSTV Nights - Monday 25th March - hosted by Eric VK7EV from 7:30pm using VK7RMD 70cm repeater on Mt Duncan on the 4th Monday in the Month.
Events:
REAST & NTARC - April 3, 2024 - History of UTC and the Leap Second with Peter Pokorny VK2EMR - from 7:30pm in the Queens Domain and streamed into the Rocherlea clubrooms.
NWTARC - April 6 - Club meeting from 1.30pm at the Scout hall, 73 Alexandra Road, Ulverstone.
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A reminder to those people rostered for next weeks broadcast:
Newsreader: VK7PD
Repeaters: REAST, NTARC and in the NW thanks to N W T A R C, West Coast Radio Group, Cradle Coast Radio Amateur Radio Club, VK7AX, VK7JH and VK7DC
160m: VK7GS
80m: VK7JGD
40m: VK7ALH
20m: VK7TPE
10m: VK7VKT
UHFCB24: VK7FMAC
DMR: Talk Group 5 and D-Star: Reflector 91C VK7ZCR
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You can hear this broadcast again on Tuesday night at 8:00pm on repeaters VK7RAA in Northern VK7 and VK7RHT in the South.
A huge thank you to all people and organisations that assisted with this broadcast.
--------------------------------
That concludes our VK7 Amateur Radio News Broadcast for this week.
You have been listening to or have just missed VK7WI. Next week the National WIA news can be heard at 0900 followed by the VK7 Amateur Radio News around 0930 hours.
Items for the broadcast can be emailed to vk7arnews(at)gmail.com
Further information about the broadcast can be found at the VK7 Amateur Radio News Groups.IO Group.
https://groups.io/g/vk7arnews
The deadline for items is 21:00 on Friday prior to the Sunday of the broadcast.
Callbacks will be taken on the frequency to which you are listening. Relay stations will use their own callsigns during the callback.
On behalf of the VK7 Amateur Radio News Team, 73 and stay safe from Rick, VK7RI.
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(Posted to the packet network courtesy Tony VK7AX)
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