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SARL Today HF Update with ZS4BS VHF/UHF News with Mike Bosch ZS2FM Contest News with Geoff ZS6C SARL Forum current topics Commercial Hamads


PAY YOUR AMATEUR RADIO LICENCE NOW -   Your 2017/2018 licence is payable on 1 April 2017. The fee is R134.00.  The fee is for 5 years is R559.00. Advise Dewald  at of your payment for a five year license. 

ICASA is not oblighed to send out invoices.  When paying your licence  by EFT or at the  Post Office please use your licence number and callsign as reference. Send the payment advice to the following two addresses and copy to The ICASA bank details are as follows:  ICASA, Nedbank,
Branch code: 146 245, account number 1462002927

ICASA automatically  cancels all licenses that are not renewed within 30 days of 1 April. Failing to pay in time  will mean that you may have to apply for a new license. You may just find that some else has applied and obtained your callsign. 

SARLNEWS: AMATEUR RADIO TODAY - listen to these programmes on line or download to retransmit on local nets, a SARL service to Radio Amateurs. 

Sunday 26 March 2017

SARLNUUS met Anette Jacobs ZR6D luister/laaiaf hier

SARLNEWS with Dave Reece ZS1DFR download/listen here

AMATEUR RADIO TODAY with  Dawie Conradie ZR6DHC download/listen   here  or visit the Amateur Radio Today page with more details and download links  here  

POTENT CORONAL HOLE FACES EARTH: A canyon-shaped hole in the sun's atmosphere is facing Earth, and it is spewing a stream of fast-moving solar wind toward our planet.  NASA's Solar Dynamics Observatory photographed the giant fissure on March 25th:

This is a "coronal hole" (CH) -- a vast region where the sun's magnetic field opens up and allows solar wind to escape.  A gaseous stream flowing from this coronal hole is expected to reach our planet on during the late hours of March 27th and could spark moderately-strong G2-class geomagnetic storms around the poles on March 28th or 29th. 

We've seen this coronal hole before.  In early March, it lashed Earth's magnetic field with a fast-moving stream that sparked several consecutive days of intense auroras around the poles. The coronal hole is potent because it is spewing solar wind threaded with "negative polarity" magnetic fields. Such fields do a good job connecting to Earth's magnetosphere and energizing geomagnetic storms.


NVIS PROPAGATION  - UNDERSTAND THE  BASICS - Radio Communication via Near Vertical Incidence Skywave propagation  can be used for communication over a wide area. It is very well suited for emergency communication. It uses frequencies between 3 and 10 MHz with amateur allocation in the 5 MHz particularly attractive.  Two propagation researchers, Ben Witvliet  and Rosa Ma Alsina-Pages wrote an interesting paper with lots of reference to  other papers for additional reading.

You can download it here

SARL TO HOLD WORKSHOP ON THE RISING RF NOISE FLOOR - Recently, following a concern raised by the South African Radio League at the SABS TC73 meeting, it was agreed that the question of the increasing level of the RF noise floor should be included in the Strategic Business Plan of the technical committee and added to the work schedule of Working Group 6. 


Noise in this context denotes unwanted radio frequency (RF) energy from man-made sources.  Like many spectrum users, Radio Amateurs have reported that the noise floor in the radio spectrum is rising as the number of devices in use that emit radio energy grows.  However, in search for concrete evidence of an increased noise floors, it appears that only limited quantitative data to support this presumption is available.

The SARL is convening a Saturday morning workshop on 22 April 09:30 - 12:30 to develop a coordinated programme and form a study gro p with the objective of establishing a monitoring system to assemble more information while also considering mtigation methods to deal with manmade noise affecting amateur radio frequencies.

This will be an open meeting and everyone who has an interest in the subject is invited to attend. The workshop will be held at the NARC. If you have a special interest, expertise or experience in this field please share this at the workshop. For more details please email with your contact details. Register now get form here


 4 Bursaries available for under 26 to study for class A -  If you are under 26 and planning to study for  the Class A amateur radio examination there are bursaries available.. For more detail and application forms click here

 SDR workshop in Cape Town on 22 APRIL -   Following on a very successful symposium on Software Defined Radio held in Gauteng towards the end of last year a similar event will be presented by AMSAT SA in the Cape on Saturday 22 April 2017 at the Bellville Campus of the Cape Peninsula University of Technology. Register now here

The programme includes topics relevant to amateur radio, and will provide some background on SDR. A practical approach of how to use readily available dongles in conjunction with your PC to set up a receiving system operational from the low MHz frequencies up to nearly 2GHz. will be described. (Pic shows Andre ZS1F signing up)

To give attendees an insight into the development of such systems some of the software available to perform this task will be demonstrated. Hardware availability suitable for the development of embedded systems required for standalone transmitters and receivers will be introduced.

Looking at the rapid development of radio communication, and the future challenges within this field of technology, it is of importance for young as well as established Radio Amateurs to keep abreast thereof. More details and registration form soon 

RSGB HANDBOOK NOW AVAILABLE IN SA- The new RSGB Radio Communication Handbook is now avaiable in South Africa. Also available are the ARRL 2017 Handbook (hardcover version) and Low Band DXing. For a list of books locally stocked and a mailorder from click here. SARL Members get up to 10% discount .


Advertising in Radio ZS and the SARL Web site

Radio ZS and the SARL web welcomes advertising. It is a source of information for readers. To place an advertisement in Radio ZS, contact Dennis, ZS4BS, at To advertise on the League web site, contact Hans, ZS6AKV at

Advertising Rates

Display (cameo) on home page - R500 pm - R2 500 for 6 months - R4 500 per annum

Commercial Hamad on home page - R60 pm - R300 for 6 months - R500 per annum

Radio ZS Strip advertisement, 10 cm x 2 columns on top of the page - R100 pm - R500 for 6 months - R1 000 per annum

Display (cameo) on home page and Radio ZS Strip advertisement (as above)       - R550 pm - R2 700 for 6 months - R4 900 per annum 

Terms and conditions

All contract advertisements content may be changed monthly on 5 working day notice

The rates are based on the complete supply of material in Jpeg unless otherwise negotiated. For artwork additional charges may apply as agreed

The content of the advertisements must comply with regulations and norms acceptable in South Africa

All advertisements are playable in advance by EFT to SA Radio League, ABSA, account no 4071 588 849 branch code 632 005

All correspondence and material must be sent to with a copy to

HF Update with Dennis, ZS4BS/7P8DG (updated 25 March 2017) 

Get your weekly copy of HF Happenings at

Operation Approved for DXCC Credit. The following operation has been approved for DXCC credit:  Palestine, E44CM, November 2016 operation.

Canada, VE. Doug, VA7DP is active as XL7100 from 23 March to 22 April. This commemorative special callsign marks the centenary of the Battle of Vimy Ridge, fought in northern France in April 1917. QSL via VA7DP, direct only.


Canada, VE. XO1X is a special callsign for the Yukon CanAm Contest Club to celebrate the 150th anniversary of Canada's Confederation until 31 December. Multi-single entries in both the WPX SSB and CW contests are confirmed. QSL direct to KC1CWF or via LoTW.  


St Maarten, PJ7. Jeff, VA3QSL, will be active again as PJ7/VA3QSL from Sint Maarten Island (NA-105) between 2 and 8 April. Activity will be holiday style on 40 to 6 meters using CW, SSB and the Digital modes. He has with him an IC-7000 using 100 w into a Buddipole or 20 m dipole. QSL via his callsign, by the Bureau, direct (see info on or LoTW.


St Lucia, J6. Stephen, WF2S, and Ralph, K1ZZI, will once again be active as J6/WF2S and J6/K1ZZI from the Bay Guesthouse in Gros Islet, St Lucia (NA-108), between 18 and 27 April. Activity will be on various HF bands using K3S into a vertical antenna over salt water, plus other antennas. Operations will probably be on SSB, the Digital modes (RTTY, PSK, JT65) and some CW. QSL via their home callsigns, direct or LoTW (preferred).


Croatia, 9A. 9A21RBM will be on the from 1 to 15 April will commemorate the 21st anniversary of the plane crash near Dubrovnik in 1996 that claimed the lives of US Commerce Secretary Ron Brown and 34 others. Presumably the suffix stands for "Ron Brown Memorial." Members of Radio Club Libertas (9A4J) will helm the operation.


Austria, OE. OE17ATOM will be active from Austria starting at 22:00 UTC on 21 April until 22:00 UTC on 22 April, operating on HF, VHF, and UHF from the only nuclear power plant that never was. The station will be set up inside the reactor hall and control room, and there will be a live video stream.


Australia, VK. Another pending special event with an atomic connection is VI5ANTLER, operating from Maralinga Village in South Australia, is planned for 14 September to 9 October. That area of northwest and south Australia is where the British carried out atomic tests in 1957 under the code name "Project Antler." Organizers say that this may be the first amateur radio activity from the Maralinga Section 200 Restricted Area since that era. They are awaiting authorizations.


Japan, JA. Special callsign 8J2016Y will be active between 1 April and 31 October to celebrate the Inuyama Festival, one of the 33 Japanese float festivals that in 2016 UNESCO inscribed to the Representative List of the Intangible Cultural Heritage of Humanity.  QSL via the JARL bureau.


Russia, UA. The Radio Marathon "Moscow-870" is running until 31 December. Special callsigns to be active next month are R1147M from 1 to 10 April, R1605M from 11 to 20 April and R870O from 21 to 30 April. Detailed information on the event and the award programme can be found at

VHF+ UHF+ MICROWAVE NEWS by Mike Bosch ZS2FM 19 March 2017 


VHF BEGINNERS SHOULD START EXPERIMENTING ON 144 & 50 MHz BANDS – Beginners on VHF should be encouraged to start on 144 and 50 MHz (2 and 6 metre) bands to learn about the vagaries of VHF. The 144 MHz band is the best Tropo band on VHF or above as the cut-off frequency of the Tropo duct rarely extends down to 50 MHz. It produces strong signals over 400 km or longer via Tropo Enhancement and up to at least 5000 km on Tropo Ducting across the sea. 

The Magic Band, 50 MHz, excels on most other propagation modes and produces extremely strong signals on Meteor Scatter, Sporadic-E, TEP, worldwide DX via F2 when the sunspot number is high, plus another seven propagation modes including SSSP and EME (except Satellite). You will find these two bands very exciting, and as you increase the gain of your horizontal Yagi so you will increase the distances and the number of VHF stations worked. 

KEN VICTOR ZS2OC, A GREAT VHF-ER, BECAME A SILENT KEY – Ken Victor ZS2OC of Port Elizabeth passed away early morning on 20 March 2017 after a long illness in hospital. Ken was an ex SABC engineer, a retired businessman and ex major in the military. He was very active on HF and VHF and displaved a wide radio knowledge. He regularly worked VHF contests and daily monitored the distant VHF beacons for propagation. Ken will be sorely missed by his wife Margaret, his family and friends. 

VHF AROUND THE COUNTRY – Dick ZS6BUN reports on their record breaking contact on 144 MHz during a VHF contest. “Yours truly was operating from the deck of the Mountain Inn in the Soutpansberg for the SARL VHF/UHF contest. Please note the relaxed mode of operating when using WSJT. I started the MSK144 meteor scatter QSO with Pieter V51PJ, went for a fine South African farmhouse breakfast and when I returned my software was sending "RRR". 

Pieter V51PJ: “Worked ZR6AUI on FSK44l, and ZS4TX on FSK441 and JT65b on 144 MHz. I heard ZS5HV on JT65b and sent 000 for almost an hour on 20 March 2017 at 03:30 UTC on FSK441 and JT65b. We had a storm here last night and all was still plugged out this morning. Paul ZS6NK I could not hear you yesterday but not a problem.” 

A reply from Hugo ZS5HV: “Thanks for the nice QSO Paul ZS6NK, took some time but we made it!” 

Peter ZS2ABF says: “No one came back last night, or we did not hear one another, just white noise and lots of pings on 144 MHz SSB. Conditions change so fast we should check the Hepburn charts daily, because what they predicted yesterday may not be the same today, as in the case of last night. Now it’s Sunday morning, and Tuesday and Wednesday look good, but let us see what actually happens."           

Hugo ZS5HV commented: “Nothing tonight on my side from Peter ZS2ABF on 20 March 2017.” 

A report from Pieter V51PJ: “This morning (21 March) on 6 metres there were a few very active stations. I heard ZS6BUN Dick with a very strong signal while testing with ZS2ACP Andre on 50,245 MHz. There was another station on the air but I could ot decode it at all, so I thought it might be FSK441 but the DF was –390 Hertz. I changed the dial and got the DF to –21 Hz but still no decode. Sorry I tried but the station had good signals too. 

“Now for easier operation, let’s log on to ON4KST site – choose the 6 or 4 metre option chat room. From there on it will be easier to identify who is on air and what mode is used. Thus if there is a DF issue then it could be discussed and all end up positive. Then that person knows too that he is still part of VHF and not someone thinking that nobody wants to work him. So let’s get logged on to ON4KST.”      

WI-FI 100 TIMES FASTER ON RAYS OF LIGHT – Slow Wi-Fi is a source of irritation that nearly everyone experiences. Wireless devices in the home consume ever more data, and it's only growing, and congesting the Wi-Fi network. Researchers at Eindhoven University of Technology have come up with a surprising solution: a wireless network based on harmless infrared rays. The capacity is not only huge (more than 40 Gbit/s per ray) but also there is no need to share since every device gets its own ray of light. This was the subject for which TU/e researcher Joanne Oh received her PhD degree with the 'cum laude' distinction last week.

Current Wi-Fi uses radio signals with a frequency of 2,5 or 5 Gigahertz. The system conceived at TU Eindhoven uses infrared light with wavelengths of 1500 nanometres and higher; this light has frequencies that are thousands of times higher, some 200 Terahertz, which makes the data capacity of the light rays much larger. Joanne Oh even managed a speed of 42,8 Gbit/s over a distance of 2,5 metres. For comparison, the average connection speed in the Netherlands is two thousand times less (17,6 Mbit/s). Even if you have the very best Wi-Fi system available, you won't get more than 300 Mbit/s in total, which is some hundred times less than the speed per ray of light achieved by the Eindhoven study. The Eindhoven system has so far used the light rays only to download; uploads are still done using radio signals since in most applications much less capacity is needed for uploading

CONTEST NEWS WITH ZS6C Updated 5 March 2017 

South African Radio League VHF/UHF Contest. Aim: The VHF/UHF contest is a test of operator ability and station design. To promote activity on the VHF/UHF and microwave bands. To encourage Amateurs to work greater distances than usual by operating portable/field stations in favourable locations and by optimising equipment and operating techniques at both field and home stations. Date and Time: 10:00 UTC Saturday 11 March to 10:00 UTC Sunday 12 March 2017. Bands: 6, 4 and 2 metres, 70 and 23 cm and higher frequencies as per band plan using FM, CW, SSB and digital. Exchange: RS or RST and six-figure grid location. See the 2017 Blue Book for more details!

SARL Forum Active Topics
... SARL Council members at swop shops? 
 1  2
30/03/2017  21:02:08
by: ZS1DGK
Tropo Ducting 
 1  2
30/03/2017  20:32:43
by: ZS2G
Satellite passes over Cape Town  30/03/2017  18:15:53
by: ZSL6104
144.300 SSB Sked 
 1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20
   21  22  23  24  25  26  27  28  29  30  31  32  33  34
30/03/2017  17:30:58
by: ZS6BUN
How we treat our ZS Amateur Radio Veterans? 
 1  2
30/03/2017  12:04:24
by: ZS1QO
FL-1000  30/03/2017  00:30:54
by: ZS2CX
AM station 7175 kHz  29/03/2017  19:18:47
by: ZS6GU

Commercial Hamads 


Direct importer of a wide selection of SWR meters, H.F., V.H.F. and U.H.F. base and mobile antennas. Amateur radio transceivers, antenna analyzers, etc. Affordable shipping costs for out of town customers and subsidized shipping to SARL members. Check out all my amateur radio goodies here. 0720268909.


Light Engineering Works

General engineering, part remanufacturing  turning, milling, drilling.Specialised welding of steel, stainless steel, aluminium and cast iron.Gear repair and remanufacturing.Prototype industrial and automotive  parts and brackets made to specification,  Heavy duty antenna support and Mobile brackets including standoff brackets and antenna parts manufactured.Tower and tower part repairs also undertaken. Contact Willie Wright ZS6WC.0823351356.


Place your commercial hamads on the home page.  Book a six months space for R300 or 12 months at R500 prepaid with order   The advertisements will be  text only up to 60 words including address, telephone number and click through URL to advertisers' website and email address. Adverisement can be changed  Send your contact details to and we will contact you or call the NARC at 011 675 2393

What is Amateur Radio ? 

Tell me more  about Amateur Radio

Radio Amateurs, or "Hams" use two-way radio communication to make contact with other radio amateurs all over the world. They are even able to use satellites and on occasion speak with astronauts. Radio Hams can do this from home or while mobile in cars, boats or on foot.

Radio Hams have a full range or communication modes at their disposal. These include plain voice, Morse code, numerous digital computer modes and even graphical modes like television. As a licensed amateur radio operator you will be able to join in experiments using all these modes.

mateur radio can be enjoyed by young and old, male and female, even the most severely disabled can make friends around the world from their own home. This hobby knows no boundaries.

Random Photo from the Call book.

 Dirk Hagendoorn, ZU1HAK



For more details and registration form click here

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ICOM Hamshack

Worked All ZS award
An interesting operating goal

The entry level for the WAZS award is 100 different call signs. The programme has recently been expanded to include higher level endorsements, such as WAZS-200, WAZS-300, etc. Endorsements may also be obtained for specific modes, eg: CW, SSB, etc.
Click here for more information...

lboat034a.gif (1979 bytes)SA Maritime Net

The South African Maritime Mobile Net provides weather reports and maintains contact with sailing vessels from around the coast and high seas.
The net operates 7 days a week.

There are two regular schedule times as follows:

  • 06:30 UTC and 11:30 UTC on 14 316 kHz high seas net.
  • 06:35 UTC and 11:35 UTC on 7 120 kHz coastal net - the net lasts approximately 30 minutes .


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This page last modified: 4/2/2017