Happy Valentine's DayÂ

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SOUTH AFRICAN RADIO LEAGUE NEWS FOR SUNDAY 14 FEBRUARY 2021

Good morning and welcome to the weekly news bulletin of the South African
Radio League read by ................ [your name, call sign and QTH]

The South African Radio League broadcasts a news bulletin each Sunday in A
frikaans and English at 08:15 and 08:30 Central African Time respectively
on HF and various VHF and UHF repeaters around the country. The bulletin
is relayed on Echolink by Johan, ZS6JPL. The audio bulletins can be dow
nloaded from the League website at while the text bulletin can be downloa
ded from https://sarl.us5.list-manage.com/track/click?u'b05a8cba9589bf
8d019e5d3&idÏ8ff36ef1&eœe7bd785b. To join the Mailchimp bull
etin mailing list, send an e-mail to the SARL Secretary.

In the news today:

SARL AND AMSATSA VHF/UHF WORKSHOP ON 20 FEBRUARY - LAST CHANCE TO REGISTER

A "PERFECT CORONAL MASS EJECTION" COULD BE A NIGHTMARE

and

THE ZS5ZLB BIRTHDAY ACTIVITY

Stay tuned for more information on these and other interesting news items.

HAPPY BIRTHDAY LAURIE

On Friday 12 February, Laurie Devereaux, ZS5DL celebrated his 91st bir
thday. Laurie, the President and all the members of the SARL wish you a
happy birthday!


If you have not yet registered for the SARL/AMSATSA VHF/UHF Workshop on Sa
turday 20 February, this is your last chance. Registration closes at mid
night on Thursday 18 February. Visit for the programme and registration f
orm. The workshop will be presented on the Bluejeans platform and attendan
ce is free for SARL and AMSAT SA members. For non-members there is a fee o
f R50.

Listen to this. You would like to take part in the activity on some of the
UHF bands but do not have equipment? Anton Janovsky will show you how wit
h a dongle and an amplifier. Find out about the next generation beacon pro
gramme, how repeater networks are put together and how the AMSATSA Dual
band Yagi was designed, and how it operates.

HAVE YOU GOT A COPY OF THE 2021 DIARY OF EVENTS AND CONTEST MANUAL?

It is clear that many SARL members have not yet downloaded the 2021 Diary
of Events and Contest Manual with questions on-air "What contest
is this?" and "What is the exchange I must give?"
and during the week receiving e-mails about the SARL National Field Day.
Please go to www.sarl.org.za/public/contests/ (https://sarl.us5.list-mana
ge.com/track/click?u'b05a8cba9589bf8d019e5d3&id�c76aad43&eœe7bd 785b) and download a copy and you will see that the National Field
Day will take place in March.

A "PERFECT CORONAL MASS EJECTION" COULD BE A NIGHTMARE

A new study in the research journal Space Weather considers what might hap
pen if a worst-case coronal mass ejection (CME) hit Earth - a â
"perfect solar storm," if you will. In 2014, Bruce Tsurut
ani of Jet Propulsion Laboratory (JPL) and Gurbax Lakhina of the Indian In
stitute of Geomagnetism introduced the "perfect CME." It c
ould create a magnetic storm with intensity up to the saturation limit,
a value greater than the Carrington Event of 1859, the researchers said
..

The interplanetary shock would arrive at Earth within about 12 hours, th
e shock impingement onto the magnetosphere would create a sudden impulse o
f around 234 nanoteslas (nT) and the magnetic pulse duration in the magnet
osphere would be about 22 seconds. Orbiting satellites would be exposed to
"extreme levels of flare and interplanetary CME (ICME) shock-acce
lerated particle radiation," they said. The event would follow a
n initial CME that would "clear the path in front of it, allowin
g the storm cloud to hit Earth with maximum force." The CMEâ-
(tm)s 12-hour travel time would allow little margin for preparation. The CM
E would hit Earth's magnetosphere at 45 times the local speed of s
ound and the resulting geomagnetic storm could be as much as twice as stro
ng as the Carrington Event. Power grids, GPS, and other services could
experience significant outages.

More recent research led by physicist Dan Welling of the University of Tex
as at Arlington took a fresh look at Tsurutani and Lakhina's â
"perfect CME," and given improvements in space weather mode
lling, he was able to reach new conclusions. Welling's team foun
d that geomagnetic disturbances in response to a perfect CME could be 10 t
imes stronger than Tsurutani and Lakhina had calculated, especially at l
atitudes above 45 to 50°.
[ARRL Letter]

THE CLUB CHALLENGE

How would you like to have free Club affiliation for 2021/22? Three Clubs
stand a chance of having their SARL affiliation paid for in the new finan
cial year - how? By providing articles for the March, April, M
ay and June issues of Radio ZS. Articles and photographs by Club members.
Send your Club's contribution to radiozs@
g.za)

You are listening to a news bulletin of the South African Radio League.

THE ZS5ZLB BIRTHDAY ACTIVITY

From 14 to 28 February, the Zululand Amateur Radio Club, ZS5ZLB will r
un a birthday station. Listen out on 80, 60 and 40 metres. Today, 14 F
ebruary there will be a field station on 40 m from the Entumeni repeater s
ite close to Eshowe.

A SCIENTIFIC PAPER HAS LINKED JUPITER WITH SOLAR CYCLES

The paper, published in Solar Physics, predicts that the Solar Cycle 2
5 maximum will take place in 2026 and reach an amplitude similar to that o
f Solar Cycle 24. "This article deals with the prediction of the u
pcoming solar activity cycle, Solar Cycle 25. We propose that astronomic
al ephemeris, specifically taken from the catalogues of aphelia of the f
our Jovian planets, could be drivers of variations in solar activity,
represented by the series of sunspot numbers (SSN) from 1749 to 2020,
" the abstract reads. "We conclude with a prediction of So
lar Cycle 25 that can be compared to a dozen predictions by other authors:
The maximum would occur in 2026,2 (± 1 year) and reach an amplitud
e of 97,6 (± 7,8), similar to that of Solar Cycle 24."
[ARRL Letter]

THE FIRST SARL 40 M GRID SQUARE SPRINT

The first SARL 40 m Club Grid Square sprint for 2021 takes place from 12:0
0 to 13:00 UTC (14:00 to 15: CAT) on Saturday 27 February, which is also
International Milk Tart Day. It is CW and phone activity; the exchange is
an RS or RST report, the name of your Club and your grid square. You ea
rn two points per QSO, 2 points for each new grid, and 1 point for eac
h new Club. Your log must be submitted by midnight on Thursday 4 March 202
1 to zs4bfn@ ) .

PROPAGATION REPORT

Hannes Coetzee, ZS6BZP, reports that the solar activity is expected to
be at low levels. There are currently no sunspot regions visible and no s
olar flaring is expected. If you want to do your own frequency predictions
, the expected effective sunspot number for the week will be around one.
The 15 to 30 m bands will provide some DX fun. Please visit the website s
paceweather.sansa.org.za for further information.

Finally, a diary of some upcoming events:

Today - Valentine's Day, ZS5ZLB on 40 metres and the CQ
WPX RTTY and the PACC contests 14 to 28 February - The ZS5ZLB Bir
thday activity
15 February - The Provincial schools open
16 February - The PEARS and Border ARC meetings
18 February - Registration for the VHF/UHF Workshop closes
20 February - The SARL and AMSAT SA VHF/UHF virtual Workshop; the
Highway and Magalies ARC meetings
20 and 21 February - The ARRL DX CW Contest
23 February - The Secunda ARC meeting
27 February - International Milk Tart Day, the SARL 40 m Grid Square spr
int, the CTARC meeting, and the West Rand Flea Market
6 March - The SARL YL Sprint for International Women's Day
7 March - The SARL HAMNET 40 m Simulated Emergency Contest

To conclude our bulletin, a recap of our main news story:

If you have not yet registered for the SARL/AMSATSA VHF/UHF Workshop on Sa
turday 20 February, this is your last chance. Registration closes at mid
night on Thursday, 18 February. Visit for the programme and registratio
n form.

This concludes our bulletin for this morning.

We invite clubs and individuals to submit news items of interest to radio
amateurs and shortwave listeners, in both English and Afrikaans, if p
ossible, by following the News Inbox link on the South African Radio Lea
gue web page. News items to include in the bulletin should reach the news
team no later than the Thursday preceding the bulletin date.

You are welcome to join us every Sunday morning for the weekly radio progr
am, Amateur Radio Today at 10:00 CAT. The program can be heard on VHF an
d UHF repeaters countrywide and on 7 082 kHz lower side-band by courtesy o
f Louis, ZS5LP. A rebroadcast by Andy, ZS6ADY, can be heard on Monda
y evenings at 19:30 CAT on 3 620 kHz.

We welcome your signal reports, comments and suggestions; please send th
ese by e-mail to artoday@ ) .

You have listened to a news bulletin compiled by Dennis Green, ZS4BS,
edited by Herman Erasmus, ZS6CTA and read by ..............

From the news team, best wishes for the week ahead.

The audio bulletins can be downloaded from the League website at www.sarl.
org.za (https://sarl.us5.list-manage.com/track/click?u'b05a8cba9589bf8
d019e5d3&id*4430d3b6&eœe7bd785b) while the text bulletin can
be downloaded from https://sarl.us5.list-manage.com/track/click?u'b05
a8cba9589bf8d019e5d3&id{2e5b548f&eœe7bd785b (https://sarl.us
5.list-manage.com/track/click?u'b05a8cba9589bf8d019e5d3&idacb6ca15
d&eœe7bd785b) . To join the Mailchimp bulletin mailing list, s
end an e-mail to the SARL Secretary at (mailto:secre
) .

Die oudio bulletins kan afgelaai word vanaf die Liga webwerf by www.sarl.o
rg.za (https://sarl.us5.list-manage.com/track/click?u'b05a8cba9589bf8d
019e5d3&id686140bf&eœe7bd785b) , terwyl die teks bulletin
s by https://sarl.us5.list-manage.com/track/click?u'b05a8cba9589bf8d01
9e5d3&id§d8dc4cbf&eœe7bd785b (https://sarl.us5.list-manage.c
om/track/click?u'b05a8cba9589bf8d019e5d3&idÝ01f25b5b&eœe7bd 785b) afgelaai kan word. Om by die Mailchimp bulletin e-poslys aan te s
luit, stuur 'n e-pos aan die SARL Sekretaris by (m
) .
SUID-AFRIKAANSE RADIOLIGA NUUS VIR SONDAG 14 FEBRUARIE 2021

Goeie môre en welkom by die weeklikse nuus uitsending van die Suid-Af
rikaanse Radioliga, gelees deur ________________________ (jou naam, ro
epsein en QTH)

Die Suid-Afrikaanse Radioliga saai elke Sondag nuus bulletins in Afrikaans
sowel as Engels om 08:15 en 08:30 Sentraal Afrika Tyd onderskeidelik uit
op HF sowel as op verskeie BHF- en UHF-herhalers. Hierdie uitsendings wor
d ook via Echolink herlei deur Johan, ZS6JPL. Die oudio bulletins kan af
gelaai word vanaf die Liga webwerf by www.sarl.org.za, terwyl die teks b
ulletins by https://sarl.us5.list-manage.com/track/click?u'b05a8cba958
9bf8d019e5d3&id�adf5dd12&eœe7bd785b afgelaai kan word. Om by
die Mailchimp bulletin e-poslys aan te sluit , stuur 'n e-pos aan die S
ARL Sekretaris.

In die nuus vandag:

SARL EN AMSATSA BHF/UHF WERKSWINKEL OP 20 FEBRUARIE - LAASTE KANS VIR REGI
STRASIE

'N "PERFEKTE KORONALE MASSA UITWERPING" KAN 'N NAGMERRIE WEES

en

DIE ZS5ZLB VERJAARDAG AKTIWITEIT

Bly op hoogte vir meer inligting oor hierdie en ander interessante nuusite
ms.

GELUKKIGE VERJAARSDAG LAURIE

Op Vrydag 12 Februarie het Laurie Devereaux, ZS5DL sy 91ste verjaardag g
evier. Laurie, die President en al die lede van die SARL wens jou 'n gel
ukkige verjaardag toe!

SARL EN AMSATSA BHF/UHF WERKSWINKEL OP 20 FEBRUARIE - LAASTE KANS VIR REGI
STRASIE

As jy nog nie vir die SARL/AMSATSA BHF/UHF-werkswinkel op Saterdag 20 Febr
uarie geregistreer het nie, is dit jou laaste kans. Registrasie sluit om
middernag op Donderdag 18 Februarie. Besoek www.sarl.org.za vir die progr
am en registrasievorm. Die werkswinkel word op die Bluejeans-platform aang
ebied en bywoning is gratis vir SARL en AMSAT SA-lede. Vir nie-lede is daa
r 'n fooi van R50.

Luister hierna. Jy wil graag deelneem aan aktiwiteite op sommige BHF-bande
, maar beskik nie oor toerusting nie? Anton Janovsky sal jou wys hoe met
'n dongle en 'n versterker [DEL: is EL] . Ontdek die volgende generasi
e baken program, hoe herhaler netwerke saamgestel word en hoe die AMSATS
A dubbel band Yagi ontwerp is en hoe dit funksioneer.

HET JY 'N KOPIE VAN DIE 2021 DAGBOEK VAN GEBEURE EN KOMPETISIE HANDLEIDING
?

Dit is duidelik dat baie SARL-lede nog nie die 2021 Dagboek van Gebeure en
Kompetisie Handleiding afgelaai het nie met vrae op die lug soos "Watter
kompetisie is dit?" en "Wat is die uitruiling wat ek moet gee?" en gedure
nde die week e-posse ontvang oor die SARL Nasionale Velddag. Gaan na www.s
arl.org.za/public/contests/contestrules.asp en laai 'n eksemplaar af, da
n sien jy dat die Nasionale Velddag in Maart plaasvind.

'N "PERFEKTE KORONALE MASSA-UITWERPING" KAN 'N NAGMERRIE WEES

'n Nuwe studie in die navorsing joernaal 'Space Weather' bespreek wat kan
gebeur as 'n slegte koronale massa-uitwerping (CME) die aarde sou tref -
'n 'perfekte son storm' as jy wil. In 2014 het Bruce Tsurutani van die Je
t Propulsion Laboratory (JPL) en Gurbax Lakhina van die Indiese Institute
of Geomagnetisme die 'perfekte CME' bekendgestel. Dit kan 'n magnetiese s
torm skep met intensiteit tot die versadigings perk, 'n waarde groter as
die Carrington-gebeurtenis van 1859, het die navorsers gesê.

Die interplanetêre skok sou binne ongeveer 12 uur op die aarde aankom
, die skok aanval op die magnetosfeer sou 'n skielike impuls van ongevee
r 234 nanoteslas (nT) skep en die duur van die magnetiese pols in die magn
etosfeer sou ongeveer 22 sekondes wees. Satelliete wat wentel, sal bloot
gestel word aan 'ekstreme vlakke van fakkel en interplanetêre CME (IC
ME) skok-versnelde deeltjie-bestraling', het hulle gesê. Die geleen
theid sou volg op 'n aanvanklike CME wat "die pad daarvoor skoonmaak, so
dat die stormwolk die Aarde met maksimum krag kon tref." Die CME se reisty
d van 12 uur sal min voorbereidings ruimte bied. Die CME sou die aarde se
magnetosfeer met 45 keer die plaaslike klank snelheid tref en die gevolgl
ike geomagnetiese storm kon soveel as twee keer so sterk wees as die Carri
ngton-gebeurtenis. Kragnetwerke, GPS en ander dienste kan aansienlike on
derbrekings ondervind.

Meer onlangse navorsing onder leiding van fisikus Dan Welling van die Univ
ersiteit van Texas in Arlington het Tsurutani en Lakhina se "perfekte CME"
opnuut bekyk en gegewe verbeterings in die modellering van ruimte-weer ko
n hy tot nuwe gevolgtrekkings kom. Die span van Welling het bevind dat geo
magnetiese steurings in reaksie op 'n perfekte CME 10 keer sterker kan wee
s as wat Tsurutani en Lakhina bereken het, veral op breedtegrade tussen
45 en 50 °.
Bly ingeskakel vir meer inligting oor hierdie en ander interessante nuus i
tems.

DIE KLUB-UITDAGING

Sal jy graag gratis Klub affiliasie vir 2021/22 wou hê? Drie Klubs st
aan die kans om hul SARL-affiliasie in die nuwe boekjaar te laat betaal -
hoe? Deur artikels vir die Maart, April, Mei en Junie uitgawes van Ra
dio ZS te verskaf. Artikels en foto's deur Klublede. Stuur jou Klub se byd
rae na ) .

Jy luister na ʼn nuus uitsending van die Suid-Afrikaanse Radioliga

DIE ZS5ZLB VERJAARDAG AKTIWITEIT

Van 14 tot 28 Februarie sal die Zululand Amateurradioklub Club, ZS5ZLB
, 'n verjaardag stasie bedryf. Luister op 80, 60 en 40 meter. Vandag
, 14 Februarie, is daar 'n veldstasie op 40 m vanaf die Entumeni herha
ler perseel naby Eshowe.

'N WETENSKAPLIKE REFERAAT HET JUPITER MET SONSIKLUSSE VERBIND

Die referaat, gepubliseer in Solar Physics, voorspel dat die Sonsiklus
25 maksimum in 2026 sal plaasvind en 'n amplitude sal bereik wat soortgel
yk is aan die van Sonsiklus 24. "Hierdie artikel handel oor die voorspelli
ng van die komende sonaktiwiteit-siklus, Sonsiklus 25. Ons stel voor dat
astronomiese efemeris, spesifiek geneem uit die katalogusse van aphelia
van die vier Joviese planete, drywers kan wees van variasies in sonakti
witeit, wat deur die reeks sonvlekgetalle (SSN) vanaf 1749 tot 2020 voor
gestel word," lui die opsomming. "Ons sluit af met 'n voorspelling van S
onsiklus 25 wat vergelyk kan word met 'n dosyn voorspellings deur ander ou
teurs: Die maksimum sal in 2026,2 (± 1 jaar) plaasvind en 'n amplit
ude van 97,6 (± 7,8) bereik, soortgelyk aan diÃ(c) van Sonsik
lus 24."

DIE EERSTE SARL 40 M RUITVIERKANT NAELLOOP

Die eerste SARL 40 m Klub Ruitvierkant naelloop vir 2021 vind van 12:00 to
t 13:00 UTC (14:00 tot 15: CAT) op Saterdag 27 Februarie plaas, wat ook
Internasionale Melktert Dag is. Dit is GG en foon aktiwiteit, die uitru
iling is 'n RS- of RST-verslag, die naam van jou klub en jou ruitvierkan
t. Jy verdien twee punte per QSO, 2 punte vir elke nuwe ruitblok en 1 pu
nt vir elke nuwe klub. Jou logboek moet teen middernag op Donderdag 4 Maar
t 2021 ingedien word by ) .

HF VOORTPLANTINGSVOORSPELLING

Hannes Coetzee, ZS6BZP, berig dat die verwagte sonaktiwiteitsvlak laag
gaan wees. Tans is daar nie sonvlekke sigbaar nie en word daar nie sonfak
kels verwag nie. Diegene wat hulle eie frekwensievoorspellings wil doen,
kan 'n verwagte effektiewe sonvlektelling van een vir die week gebruik. R
adio amateurs kan bruikbare DX openinge op die 15 tot 30 m bande verwag.
Besoek gerus die webtuiste spaceweather.sansa.org.za vir meer inligting.

Nou die Dagboek van Gebeure vir die volgende paar weke:

Vandag - Valentynsdag, ZS5ZLB op 40 metre en die CQ WPX RTD en d
ie PACC- kompetisies
14 tot 28 Februarie - die ZS5ZLB Verjaarsdag aktiwiteit
15 Februarie - die provinsiale skole open
16 Februarie - die PEARS en Grens ARK vergaderings
18 Februarie - registrasie vir die BHF/UHF Werkswinkel sluit
20 Februarie - die SARL en AMSAT SA virtuele BHF/UHF werkswinkel; die High
way en Magalies-ARK vergaderings
20 en 21 Februarie - die ARRL DX GG-kompetisie
23 Februarie - die Secunda ARK-vergadering
27 Februarie - Internasionale Melktert Dag, die SARL 40 m Ruitvierkant n
aelloop, die Kaapstad ARK vergadering en die Wesrand snuffelmark
6 Maart - die SARL YD Naelloop vir Internasionale Vrouedag
7 Maart - die SARL HAMNET 40 m Gesimuleerde Nood kompetisie

Om die bulletin mee af te sluit, â-˜n opsomming van ons hoof berig
:

As jy nog nie vir die SARL/AMSATSA BHF/UHF-werkswinkel op Saterdag 20 Febr
uarie geregistreer het nie, is dit jou laaste kans. Registrasie sluit om
middernag op Donderdag 18 Februarie. Besoek www.sarl.org.za vir die progr
am en registrasievorm.

Dit bring ons aan die einde van hierdie bulletin.

Die Suid-Afrikaanse Radioliga se nuus diens nooi klubs en individue uit om
nuus brokkies van belang vir radio amateurs en kortgolf luisteraars in te
dien. Plaas nuus berigte indien moontlik, in beide Engels en Afrikaans
op die Suid-Afrikaanse Radioliga webtuiste onder die 'news inbox' skakel
nie later as die Donderdag wat die bulletin datum vooraf gaan nie.

Luister elke Sondag oggend om 10:00 Sentraal Afrika Tyd na "Amateur Radio
Today." Daar is herleiding op 7 082 kHz laer syband deur Louis, ZS5LP e
n verskeie herleidings op BHF en UHF frekwensies regoor Suid-Afrika. 'n He
ruitsending aangebied deur Andy ZS6ADY vind op Maandae aande om 19:30 Sent
raal Afrika Tyd op 3 620 kHz plaas.

Ons ontvang graag jou sein rapporte, kommentaar en voorstelle, stuur '
n e-pos aan ) .

Jy het geluister na 'n nuus uitsending van die Suid-Afrikaanse Radioliga
, saamgestel deur Dennis Green, ZS4BS, geredigeer deur Deon Erwin,
ZS1ZL en gelees deur ....................................

Van die nuus span, die beste wense vir die week vorentoe.

ÿÿÿÿÿÿÿÿ
ÿÿÿÿÿÿÿÿ
ÿÿÿÿ
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