The DX spots collection - from January 1997 up to October 2005 - is
available at www.425dxn.org/dxspots/, as well the relevant software
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ZCZC AP49
QST de W1AW
Propagation Forecast Bulletin 49 ARLP049
From Tad Cook, K7RA
Seattle, WA November 23, 2005
To all radio amateurs
SB PROP ARL ARLP049
ARLP049 Propagation de K7RA
This bulletin is early because of the Thanksgiving holiday in the United
States. The usual data appearing at the bottom of this weekly bulletin
will come out in an additional bulletin on Monday, November 28, 2005.
Geomagnetic indicators, the A and K index, have remained low. This is good
for HF propagation and with low sunspot numbers lowering the MUF (Maximum
Usable Frequency), perfect for long range communication on 160 and 80 meters.
Average sunspot numbers in the six days since the last bulletin were 50.3,
nearly 30 points above the average reported in the previous bulletin. The
daily solar flux went just above 100 on November 17-19, the days when large
sunspot 822 was passing across the center of the visible solar disk, and
exerting maximum influence.
Solar flux is expected to decline over the next week. Predicted solar flux
over the next few days is 95, 90 and 85 for November 23-25, and 80 through
the end of the month. Geomagnetic numbers (and disturbances) are expected
to remain low. Expect mid latitude K index of 3 or less and A index at 10
or below until the end of the month, when we may see higher geomagnetic
activity around November 30 to December 1.
More mail was received this week about 10 meter propagation and beacon
stations.
Kevin Seeger, WD0AVV lives in Southern California and thinks more of us
should pay attention to ten meters, even though we are headed toward the
bottom of the solar cycle. He says the first thing he does when checking
ten is to listen for beacon stations, which are mostly between 28.2 and
28.3 MHz. Since they transmit constantly from many locations, this is a
good indicator of openings that might only occur between your location and
some particular area or region.
Kevin says that on November 5 at 8:00 AM local time (1600z) he copied these
beacon stations, and at the end of the day he was still receiving most of them:
K4UKB 28.276
W4TIY 28.272
K4AIS 28.270
W3HH 28.269
W4JPL 28.253
KG4YUV 28.253
WK4DS 28.222
If you look up the call sign of a beacon station on www.qrz.com, you'll see
that often there are links to personal web pages and information about the
beacon operation. For instance, WK4DS, David Saylors, has links showing
his 2 watt beacon which is a popular low power 10 meter mobile transceiver
hooked to a keyer. There are also links showing some impressive telegraph
keys that David builds in his machine shop in Trenton, Georgia.
Using Google you can find many resources on ten meter beacons. The
Northern California DX Foundation runs their impressive worldwide beacon
network on 28.2 MHz, and here you can quickly judge worldwide ten meter
propagation. The Ten-Ten International Net, which has been energetically
promoting ten meters for over 40 years, has an extensive list of ten meter
beacon stations at http://www.ten-ten.org/beacons.html. By the way, the
author of your bulletin was introduced to Ten-Ten by the original K7RA (at
that time W7EXM, Homer Spence) in 1971, and obtained the member number 5569.
Last week's bulletin mentioned long nighttime propagation on ten meters
observed from New York to Oklahoma. Several people wrote in about this,
including Jon Jones, N0JK, who says E-layer propagation was the most likely
mode. On that same morning, November 14, strong E-layer propagation was
reported on both 10 and 6 meters. He notes that at 15:55z N4LI in EM55 (in
Tennessee) reported hearing loud ten meter propagation all up and down the
eastern seaboard. At 16:09z W5TDN in EM22 (in Texas) reported hearing
WB3ANT (FN21) and W3MEL (FN10), both in Pennsylvania.
If you would like to make a comment or have a tip for our readers, email
the author at, [EMAIL PROTECTED]
For more information concerning radio propagation and an explanation of the
numbers used in this bulletin see the ARRL Technical Information Service
propagation page at, http://www.arrl.org/tis/info/propagation.html. An
archive of past bulletins is found at, http://www.arrl.org/w1aw/prop/.
NNNN
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>>> 425 DX NEWS - NEW SEARCH TOOL <<<
Leonardo Lastrucci, IZ5FSA has developed a software which allows to query the
425 DX News Archive maintained on www.ariscandicci.it from the PacketCluster.
The command is SH/425 [text], where [text] should be replaced with a callsign,
a IOTA Reference number, Island name, Antarctica Base, Lighthouse, etc.
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