Showing posts with label Space Communications. Show all posts
Showing posts with label Space Communications. Show all posts

Monday, January 26, 2026

Radio Amateurs (HAMS) do not Hinder but Serve their Local Communities in the Southern Cape Area!

Image:  Mobile Emergency Communication Station  (Click on image for larger view.)

The title of the article says it all: Radio Amateurs (HAMS) do not Hinder but Serve their Local Communities in the Southern Cape Area! 

Through the years amateur radio operators has wrongly been identified as Citizen Band (CB Radio) operators that in the eyes of the public serve no useful purpose other than chatting to each other on their radios.  This impressions is far from the truth when it comes to amateur radio operators also called HAMS.  There are more than 3 million people World Wide that practices Amateur Radio.

Incidents where neighbors spot a towering antenna or a mast rising above the rooftop has resulted in complaints being send to the local municipal authority in Mossel Bay.  Some view the towers or masts as a concern and an eyesore while others complain that its obstructing their sea view.  Some even go so far as to claim that is its a health and safety risk and also an unnecessary intrusion on the skyline just to talk to one another.  In this day in age why not use a cellphone to talk to your buddies?  Such complaints are on the increase and it has become necessary to address concerns of the general public even though in some cases the radio amateur lived and erected a tower in the neighborhood long before new entrants moved into the area.  Understandably from an aesthetic standpoint, the profound role these masts and antennas play is overlooked from the point of view by the general public as well as uninformed local authorities.

Far from being a mere hobby or a nuisance, amateur radio operators (HAMS) are licensed guardians of emergency communications and render their skillful knowledge and service to the general public and local authorities during disasters, emergencies, community events etc.  This service is provide free of any charges and all expenses is bared by the radio amateurs themselves.  A free service to the benefit of the local authority and the general public whenever our services are needed.  I will later provide more information on the specific services rendered and also proof of such services being provided in the past.

Anchored in rigorous International and National Regulations, the service that radio amateurs provide is a testament to service, innovation and community protection.  Yes, community protection! (See link below for more information)  

Now this article provides an overview into the regulated world of amateur radio, its vital contribution to the Southern Cape Area safety net and the official endorsements that underscore its value, transforming what might seem like a nuisance and backyard operation to some.  In fact this is far from the truth.  Please read on and you will discover how the best hobby in the world is also the beacon of resilience.

A Regulated Service

Amateur Radio is not only a hobby but also renders a service to the local authorities and community when modern communications fail.  Yes modern communications do fail.  The Knysna Fire 2017 is only one instance where modern communications failed.  Amateur Radio is a formally recognized radio communication service under Local and International law. The International Telecommunication Union (ITU), a specialized agency of the United nations, defines the amateur radio service in it's Radio Regulations as "a radio communication service for the purpose of self-training, intercommunication and technical investigations carried out by amateurs, that is, by duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest."  This definition, enshrined in Article 1.56 of the ITU Radio Regulations, elevates amateur radio beyond a hobby to a structured discipline with global oversight.

In South Africa, this international framework is implemented through the Independent Communications Authority of South Africa (ICASA).  Established under the ICASA Act and the Electronic Communications Act of 2005, ICASA issues amateur radio station licenses only to those who demonstrate technical competence.  Aspiring operators must pass rigorous examinations covering radio theory, regulations and operating procedures.  Licenses are divided into classes:  Class A (for advanced operators) and Class B (for beginners), with restrictions on power output and frequency bands to ensure safe and interference free operations.

Towers and antennas, often the focal point of neighbor disputes are not erected haphazardly.  ICASA's Radio Frequency Spectrum Regulations 2015 mandate compliance with structural safety standards, including engineering assessments to withstand South Africa's variable weather conditions. 

In many instances by-laws of local authorities does not make provision for radio amateur antennas, masts and towers.  When a complaint is lodged the local authority use old and outdated by-laws.  In some instances antennas and towers are described as structures and building plans must be submitted together with a town planner and structural engineer's certification. Written permission must also by obtained from neighbors. Some authorities rely on by laws regarding the installation of TV Antennas which is then used for installation of amateur radio antennas, mast and towers.  Currently there is no distinction in this regard. This is an omission that seriously hampers the great free services provided by amateur radio to their respected communities.

In many cases complaints rely solely on the visual impact of the antennas and tower and not on the service that amateur radio provides to their local communities.  In other instances amateur radio antennas, masts and towers has been erected long before any by law existed that regulates installations. In one instance a radio amateur erected his tower in 2004 and a neighbor only complained about the tower only 14 years later.  

Don't understand me wrong it is not that we are unwilling to comply or work with authorities and the community when putting up towers.  We need to all work together, provide sound input and representations  to establish clear guidelines and by-laws.  The ideal situation would be that amateur radio antennas and towers be recognized  as essential infrastructure rather then illegal  or that it's visual impact is not acceptable to some. 

Amateur Radio is over a century old, with roots tracing back to the late 19th and early 20th centuries. It originated alongside the birth of radio technology itself, with enthusiasts experimenting with wireless telegraphy as early as the 1890s.  Now that we know how old amateur radio is, it is important to look at some services it rendered in the Southern Cape and South Africa throughout the years.  Unfortunately space only allows for a few examples but I am sure those mentioned here will provide a great overview of the service we provide to our local communities, authorities locally and nationally as well as world wide.

Community Service in Action (Internationally, Nationally and Locally)

Before I provide a few incidents let me point out that there are to many instances where amateur radio saved lives by assisting in providing emergency communications when all else failed or when a distress call is received.  I will only provide a few.  Before continuing I would like to mention that radio amateurs does provide a service that entails many different scenarios.  The instances below does not mean that radio amateurs can only assist in the mentioned incidents.  Some might even be surprised to learn that radio amateurs can provide emergency communications in outer space via satellites should the need arise.  Radio Amateurs can "cater" for any eventuality as they do have all the necessary radio equipment and satellites available to do just that.


Image: Mossel Bay Fire Storm  (Click on image for larger view.)

Now herewith a few past and present events that radio amateurs assisted in:  (Click on the links for more information)

Image: Amateur Radio  Emergency Communications Field Station at St Blaize, Mossel Bay

Local Community Events where Radio Amateurs assist with communications:

Above is only a few incidents / events in which amateur played a important roll in providing services to the community and assistance during disasters.  I am sure many will agree if it was not for radio amateurs and their equipment many lives, homes and animals would have been lost on land and sea.

Health and Safety Concerns

Members of the public living near radio amateurs often express their concern about health risks when amateur radio operators transmit (Electromagnetic Fields aka EMF) RF using their radios. Amateur radio installations are governed by stringent safety standards.  ICASA adopts exposure limits from the International Commission on Non-Ionizing Radiation Protection (ICNIRP)  which align with the World Health Organization (WHO) recommendations.

WHO's extensive reviews included over 25 000 studies, conclude that low-level EMF from amateur radio poses no confirmed health  risks.  Radio amateurs are trained to evaluate their stations using tools like the FCC's RF exposure guidelines, adapted locally to avoid interference with aviation, broadcasting or emergency services.  In practice most amateur radio setups operate well below these thresholds, far safer than everyday devices like cell phones.

Official Recognition:  A Global and National Endorsement

Amateur radio's role in disaster response is officially recognized by the United Nations.  The ITU under UN auspices highlights amateurs in emergency telecommunications, noting their ability to provide voice, text, digital and data links in remote or devastated areas.  The United Nations Office for Disaster Risk Reduction (UNDRR) cites amateur radio as a resilient method for risk reduction, integrated into global strategies like the Sendai Framework.

In South Africa the South African Radio League (SARL= National Body for Amateur Radio in South Africa) collaborates with ICASA and provincial disaster management / agencies to embed amateur networks in emergency plans in all provinces. These partnership underscores amateurs as a "force multiplier" in crises as per United Nations guidelines.

More than Towers / Antennas:  Equipment of readiness and hope

Those amateur radio antennas and towers are not vanity projects but lifelines.  In the Southern Cape Area devastating fires, floods, wind storms and even earthquake risks, they represent not only preparedness but a necessity when disasters or emergencies occur.  The neighbor decrying a tower and antennas might one day rely on it for a distress call when all other means of communications fails. The Knysna Fire in 2017 is a reminder in this regard where it was reported:  “A major problem fighting the massive fires that ravaged Knysna  was the lack of communications and electricity outages"

Conclusion:  Embrace Radio Amateurs as they are the Guardians of the Airwaves

Radio Amateurs do not hinder communities - they fortify and assist their communities.  Under ITU and ICASA oversight, with the SARL's guidance and UN endorsement they embody regulated volunteerism and Ubuntu.  The next time a tower or mast graces the Southern Cape Area see it as a symbol of service; metal and wire woven into the fabric of safety and solidarity.  By supporting Radio Amateurs we invest in our collective resilience.

In the final analysis, while amateur radio have a storied past, the future looks even brighter. The fusion of traditional knowledge with contemporary innovations is set to usher in a golden era for
amateur radio. In the realm of crisis communication, amateur radio remain, as ever, a stalwart ally, poised to play an even more pivotal role in the future.

AMATEUR (HAM) RADIO IS THE ONLY FAIL SAFE COMMUNICATION SYSTEM IN THE WORLD!

Images:  Past and present events where amateur radio assisted communities in need.  (Click on images for larger view.)



















 

ED.  This article would not have been possible without the contribution by many fellow radio amateurs, news papers, HAMNET  and the Internet.  To many to mention individually.  I do not claim in any way to be the owner of any of the content and information.  In my humble opinion it belongs to Amateur Radio.  All the inputs are highly appreciated.

Monday, October 13, 2025

SSTV Experiment - World Space Week 2025 - ARISS Series 29 - Period: 3-9 October 2025

October 4, 2025 — Amateur Radio on the International Space Station (ARISS) announces an SSTV event to be held this week in recognition of the 68th anniversary of the launch of the world’s first satellite, Sputnik-1 on October 4, 1957. This event will feature 12 images that will be transmitted at 145.800 MHz using SSTV mode PD120.

The operation times are as follows and are tentative:

Oct. 3 Start time: 12:20 UTC / 08:20 AM ET

Oct. 9 End time: around 7:30 UTC / 3:30 AM ET

(Expect interruptions due to scheduled ARISS educational contacts.)

For submitting your received images

Go to https://ariss-usa.org/ARISS_SSTV/ to submit your decodes. Check the box after submis-sion to the SSTV gallery for an award certificate. You must submit your decodes and your re-quest for an award certificate within 72 hours after SSTV event transmissions end. Certificates are delivered via email (watch your spam folder).

For more information about the ARISS SSTV Award Certificate, go to https://ariss.pzk.org.pl/sstv/ .

Thanks to our user community for participating in ARISS.


 Why download SSTV images from the ISS?

Every radio amateur that participate set his/her own goals and has a reason for participating in the experiment.  Unfortunately I do not have all the information on hand why some radio amateurs download images.  

World Wide Participation Statistics:


Herewith some images (Click on images to enlarge)

Steyn Truter ZS1STE -  Klein Brak River

 

Gerrit Klopper ZS1KLO - Rheebok

Rulhof vd Merwe ZS4RM - Bloemfontein


Christi Grobbelaar ZS4CGR -  Luchoff


Jacobus de Jager ZS1JDJ - Aberdeen


Bernie Wentzel ZR1ACP - Agulhas


Francois Joubert ZS1Q - George



Sunday, August 31, 2025

Debrief: ARISS radio contact between NA1SS and South Africa's ZS9LSO on August 29, 2025, 11h35 SAST.


IMAGE: ORION ARISS 2025 - LIVE TALK TO THE ISS FROM JOHANNESBURG SOUTH AFRICA

 

Video Above:  OriesTV Video

ARISS Youtube Video available HERE

A successful direct contact with the International Space Station (ISS) via Amateur Radio took place at 11:35 CAT on Friday 29 August 2025, allowing youngsters to ask their questions to astronaut Mike Fincke, KE5AI and encouraging students to pursue Science, Technology, Engineering, and Mathematics (STEM) in extracurricular activities.

Eight schools participated, with representatives from each school present at the ground station asking their individual questions. In total, 15 questions were answered by Mike from the ISS before contact was lost. The event was streamed to the participating schools and on social media.

Congratulations to Dr Gerhard Gericke, ZS6CRS and the team of dedicated radio amateurs from the Alberton Amateur Radio Interest Group, who supplied equipment and manned the ground station. The callsign ZS9LSO was operated within the school hall. In attendance at this remarkable event were all the learners of the school, teachers, and invited guests.

The SARL was represented by the President, Nico van Rensburg, ZS6QL, and Vice President, Guy Eales, ZS6GUY, who expressed their appreciation to the ground station team for making this event possible and for promoting amateur radio to the public.

Several local ZS Link Network Group radio amateurs participated in the event by recording the ARISS contact between NAISS and ZS9LSO using the allocated frequency of 145.800 Mhz.  Different radios and antennas were used.  Even portable radios were used.  

The following ZS Link Network Group radio amateurs participated:

  • Rulhof ZS4RM
  • Thys ZS1TBP
  • Gerrit ZS1KLO
  • Fred ZS5SAM/1
  • Keverne ZS1ABU
  • Christi ZS4CGR
  • Johan ZS1I
  • Deon ZS1DDM

Herewith a few videos and audio recordings:



All three videos provided by Gerrit ZS1KLO.  Thanks, Gerrit!!

Audio recordings:

  • Christi ZS4CGR recording available HERE.
  • Fred ZS5SAM/1 recording available HERE
  • ARISS recording available HERE
  • Keith ZS6TW recording available HERE 

Finally:  A big thank you to all who made this contact possible, to many to mention here.  Thank you also to all the radio amateurs that participated in this event and also those who directly recorded audio from the ISS on 145.800 Mhz.  Your participation is highly appreciated!


Friday, August 29, 2025

Announcement: ARISS radio contact between NA1SS and South Africa's ZS9LSO on August 29, 2025, 11h35 SAST.


Astronaut Mike Fincke, amateur radio call sign KE5AIT, will operate the amateur radio equipment aboard the International Space Station. Mike will answer questions from students in South Africa during this live amateur radio contact.


This amateur radio contact is scheduled for Friday, August 29, 2025 at 09:35:44 UTC.
Astronaut Mike Fincke will operate the amateur radio station call sign NA1SS aboard the ISS and will call the radio amateur ground station call sign ZS9LSO in South Africa. This is a live ARISS radio contact from the Laerskool Orion in Alberton, South Africa.
You can listen live to astronaut Mike Fincke aboard the ISS on 145.800 MHz (plus/minus 3kHz Doppler shift).

The event will be streamed live:
https://www.youtube.com/@ORION2025ARISS

English is the expected language of communication in this amateur radio contact.

Questions (as time allows):

1. What does it feel like to be without gravity, and what challenges are there in a weightless environment?

2. How long does it take to readjust to Earth after spending a long time in space without gravity, and how do you adapt?

3. Does the lack of gravity affect your sleep patterns in space? How do you sleep without floating around?

4. What inspired you to become an astronaut, and what advice would you give to others who want to follow the same path?

5. How long does it take to put on the spacesuit and helmet, and how comfortable is it to wear?

6. Where does the water you drink come from?

7. What type of food do astronauts eat in space, and how is the food kept fresh?

8. In the absence of an atmosphere as we know it on earth, where does the oxygen come from that you breathe?

9. I am a very active person and would like to know how do astronauts stay fit in a microgravity?

10. Do you have any free time and how do you spend it?

11. What happens when any of the crew gets sick?

12. I am absolutely stunned at the thought of spacewalking. Does your body feel any different during a space walk?

13. How do you navigate in space?

14. What technologies do you think will make humans living on Mars possible?

15. What type of experiments are being carried out on the ISS?

16. What's the funniest thing that has happened to you in zero gravity?

17. Have you witnessed any unexpected phenomena in space?

18. How do you tell night from day—does Earth's pattern help?

19. What's the most beautiful sight you've seen looking down on Earth?

20. Do any sounds from Earth reach your station—like storms or ocean waves?

The ARISS program is aimed at students and enthusiasts and aims to inspire them in the study of sciences with this amateur radio activity. The demonstration of amateur radio communication from space invites schools and universities to make use of these educational technical resources. We invite radio amateurs and space enthusiasts to tune in to this exciting moment.

Check out the ARISS website and follow ARISS on the official social media channels for more updates.
https://www.ariss.org/contact-the-iss.html 

Images:  (Click on images for larger view.)

 

Images: Alberton Amateur Radio Interest Group

Closure of this ZS Link Network Blog - 29 April 2026

This will be the final posting on the ZS Link Network Blog. This blog will no longer be updated but will remain available for research an...