Scientists predict that Solar Cycle 24 will peak in May
2013 with 90 sunspots per day on average. At the annual
Space Weather Workshop held in Boulder, Colorado last
month, an international panel of experts led by NOAA's
Space Weather Prediction Center (SWPC) predicted that
Solar Cycle 24 would peak in May 2013 with 90 sunspots
per day on average.
If the prediction proves true, Solar Cycle 24 will be
the weakest cycle since Solar Cycle 16 which peaked
with 78 daily sunspots in 1928, and ninth weakest since
the 1750s, when numbered cycles began.
70MHz for Slovak Stations
Since May 1st, 2009 Slovak stations have an access to
70 MHz band, in the segment 70,250 – 70,350 MHz Max. 10
W ERP Each Slovak station must apply for special
permission for 70 MHz.
Recession hits again
To follow on from a recent closure of a publishing
magazine associated with out hobby, there is yet
another Magazine closure.
Monitoring Monthly magazine ceases publication. The
current economic recession has seen many businesses
go-under in recent weeks, and one of the most recent of
these are related to our hobby.
Monitoring Monthly magazine appears to be the latest
casualty of the economic downturn. Its web site will
stay active for the immediate future to allow its
electronic issue subscribers a chance to download
www.monitoringmonthly.co.uk
Rallies
Bangor and District ARS - Radio and Computer Rally
The 2009 rally is to be held on Sunday 14st June
2009,At 12 Noon in "The Country Club", Crawfordsburn.
ADMISSION £2 INCLUDING 2 RAFFLE TICKETS ! The all new
RSGB GB4FUN ! Trade Stands ,Bring and Buy ,BDARS Slide
Show A good selection of radio and computer traders
will be in attendance Special interest groups will have
their own stands .The ever popular FREE bring and buy
will be running as normal Contact Bill GI4AAM for
further details: Tel: 028 9181 6707 Email:
bill.langtry /at/ btinternet.com Website www.bdars.com
History This Week
1885 Edison patents ship-to-shore wireless telegraphy
system, by induction.
1896 Edison patents first fluorescent electric lamp.
1897 Marconi transmits 14.5 Kms across Bristol Channel.
1897 Braun displays his cathode ray tube, Boston
Exhibition.
I'd like to thank the IRTS for the above infromation.
1 comment:
Regarding the sunspot count, IF ONLY cycle 24 would peak at 90 sunspots per day, we would have a cycle much larger than the largest of all, cycle 19 of the 1950s.
The actual forecast is for a smoothed sunspot number (sunspot number does not equal number of sunspots, confusingly) of 90 around the peak. According to the way sunspot numbers are calculated, if you actually could see 90 new sunspots every day, even if they all faded away in 24 hours, the daily sunspot number could be over 1,000.
Some past issues of the ARRL Propagation Bulletin talk about how daily sunspot number is calculated. If you look at the bottom in multiple bulletins, you will see that the daily sunspot numbers have a minimum non-zero value of 11:
http://www.arrl.org/w1aw/prop/
That's right, there are no sunspot numbers between zero and 11.
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