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   LS_ARRL      Bulletins from the ARRL      3,036 messages   

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   Message 1,239 of 3,036   
   mark lewis to all   
   ARLP005 Propagation de K7RA   
   31 Jan 14 18:51:52   
   
   SB PROP @ ARL $ARLP005   
   ARLP005 Propagation de K7RA   
      
   ZCZC AP05   
   QST de W1AW   
   Propagation Forecast Bulletin 5  ARLP005   
   > From Tad Cook, K7RA   
   Seattle, WA  January 31, 2014   
   To all radio amateurs   
      
   SB PROP ARL ARLP005   
   ARLP005 Propagation de K7RA   
      
   Another week of solar ambiguity, with sunspot numbers down, but   
   solar flux up. Average daily sunspot numbers declined from 113.3 to   
   101.4, but average daily solar flux moved from 133.4 to 142.9. Both   
   solar flux and sunspot number moved up from January 29-30, solar   
   flux from 156.4 to 160.5, and sunspot number from 96 to 112. It is   
   encouraging to see the X-ray background flux move from the B to the   
   C range over the past 4 days. You can see the daily background flux   
   values at http://www.swpc.noaa.gov/ftpdir/latest/DSD.txt .   
      
   The latest prediction has solar flux at 165 and 170 on January 31   
   and February 1, 175 on February 2-3, 165 on February 4, 160 on   
   February 5-7, then 150, 140 and 135 on February 8-10, 125 on   
   February 11-15, 130 on February 16-20, then 135 and 145 on February   
   21-22, and 160 on February 23-24.   
      
   Predicted planetary A index is 5 on January 31 through February 6, 8   
   on February 7-8, 5 on February 9-16, 8 on February 17, 5 on February   
   18-23, then 10, 18 and 8 on February 24-26.   
      
   The latest prediction for solar flux and planetary A index is from   
   January 30, when it did something odd. Both forecasts reverted back   
   to exactly the same values as the January 26 forecast after a   
   revision that lasted several days, beginning January 27. You can see   
   the forecasts at   
   http://www.swpc.noaa.gov/ftpmenu/forecasts/45DF.html .   
      
   OK1HH predicts geomagnetic conditions as quiet on January 31, mostly   
   quiet February 1, quiet to unsettled February 2-3, mostly quiet   
   February 4-5, quiet February 6, mostly quiet February 7, quiet to   
   active February 8, mostly quiet February 9-10, quiet February 11,   
   mostly quiet February 12, quiet February 13-15, quiet to unsettled   
   February 16-18, quiet February 19-20, quiet to unsettled February   
   21, quiet February 22, there is no prediction for February 23, and   
   quiet to active conditions February 24-25.   
      
   We are only missing a single day's data for calculating the 3-month   
   moving average of sunspot numbers, but it looks like it will be   
   around the same value as last month's average, which was 123.7.   
   This figure was only higher way back in the 3-month period ending in   
   February 2003, which was 128.9.  All subsequent values over the past   
   11 years have been lower. The actual numbers will appear in next   
   week's bulletin.   
      
   John Jones, N0JK commented on the report from Scott Bidstrup,   
   TI3/W7RI in last week's Propagation Forecast Bulletin, mentioning at   
   "big F2 opening in December."   
      
   John says, "Scott was probably referring to the big F2 opening on 6   
   meters in November. No big F2 openings in December and so far in   
   January.  Pickings slim here in Kansas, too. Did have good meteor   
   scatter January 3 for the Quadrantids peak. I worked K5N EL08 on 6   
   meter SSB via meteors."   
      
   Chip Margelli, K7JA reports from Garden Grove, California: "I worked   
   FT5ZM on Sunday night, January 26 at about 6:25 PM local time (0225   
   UTC January 27) on 10 meters, beaming over Australia. From out here,   
   that is the short path to Amsterdam Island, and because there was no   
   competition from the usual hordes of eastern U.S. stations, it was   
   an easy QSO with 200 Watts and my 7-element OP-DES Yagi.  Their   
   signal peaked at S7 on my S-meter at times over the following two   
   hours.   
      
   "There used to be a 10-meter beacon on Amsterdam Island, and two   
   solar cycles ago I heard it often."   
      
   Jeff Hartley, N8II of Shepherdstown, West Virginia reports: "The   
   FT5ZM DXpedition on Amsterdam Island has been pounding the airwaves   
   since the January 26 and pile ups still seem somewhere between big   
   and enormous whenever they are audible here. My beam heading to   
   there is 94 degrees and distance is 11,113 miles making Amsterdam   
   the most distant DXCC country from here. Their sunrise is just about   
   2400Z and sunset is about 1420Z per QRZ.com.   
      
   "My first two QSOs with FT5ZM were on 20 meters short path and   
   relatively easy. Their signal was about S7-9 at 2200Z Sunday evening   
   and I tried for maybe 10 minutes on 20 CW with no luck. Then a   
   second listen at 0110Z was unbelievable with the CW station pounding   
   in at 15-25 dB over S9 on my 5 element Yagi. I can never remember a   
   signal near the same distance so loud, but the VKs are S9+20 dB at   
   times on 20 at a distance of about 10,500 miles to VK6.   
      
   "The 20 meter phone signal was down 10-15 dB from CW, but it was   
   pretty easy to get though the other bands have been tough. I finally   
   was able to log them on 40 through 10 meters. The morning of the   
   January 27 featured very good prop on 10 meters with their signal   
   about S7 here; around 1530Z, I gave up as their 10 meter CW station   
   had faded to below S5. Done for the day? No, a check at 1600 and the   
   signal was back up to peaking S9 and after a bit of a struggle I   
   made it through.   
      
   "Despite reasonable but weaker signals than on 10 meters, 12 and 15   
   meters were impossible for me. On the January 28 the K index was up   
   and propagation on 15 meters and higher was down here. However,   
   their 17 meter phone signal was S7 with some flutter on my simple   
   delta loop and I made it through thanks to the operator's call for   
   NA only.   
      
   "Their signal at first on 12 meter phone was inaudible but finally   
   came up to about S4 and thanks to their good operator and not too   
   big of a pile up (due to weak signal) I made it through. The   
   strangest propagation was Wednesday morning on 15 CW. About 1300Z,   
   their signal peaked about S6 beaming 30 degrees, nearly polar with   
   the direct path signal only about S2. Later, they were working NA   
   only on 15 CW at 1545Z peaking then about 50-60 degrees at S8, and I   
   finally made a QSO.   
      
   "Their low band signals have varied quite a bit from night to night   
   and I have never heard them above about S5-6. On 40 with the quad   
   loop they have been weak more often than expected. Finally on   
   Thursday evening I made it through on 40 and 30 meters with their   
   signal peaking S7-8 on both bands after their sunrise with the 40   
   meter contact about 75 minutes after their sunrise. There has been   
   some morning long path propagation on 30 and 20, but activity is   
   limited. It also seems that their best high band signals on 17   
   through 10 meters are after their sunset, but 15 opens around our   
   sunrise. As I write this note, they are S8 on 20 phone at 0200Z with   
   plenty of callers still.   
      
   "Also interesting to note was the very high QRN at summer levels on   
   the low bands the night of January 21 when the temp here was in the   
   teens! The storms of the Atlantic coast farther south caused the   
   racket.   
      
   "Propagation was very poor to EU early the first night of the CQWW   
   160M contest, but HD2A and CE1/K7CA were loud and easy to work with   
   100W around 0200Z. Family health problems prevented any activity on   
   Saturday evening. Quite a few locals worked over 25 DXCC countries   
   per their reports."   
      
   If you would like to make a comment or have a tip for our readers,   
   email the author at, k7ra@arrl.net.   
      
   For more information concerning radio propagation, see the ARRL   
   Technical Information Service web page at   
   http://arrl.org/propagation-of-rf-signals. For an explanation of the   
   numbers used in this bulletin, see   
   http://arrl.org/the-sun-the-earth-the-ionosphere. An archive of past   
   propagation bulletins is at   
   http://arrl.org/w1aw-bulletins-archive-propagation. More good   
   information and tutorials on propagation are at http://k9la.us/.   
      
   Monthly propagation charts between four USA regions and twelve   
   overseas locations are at http://arrl.org/propagation.   
      
   Instructions for starting or ending email distribution of ARRL   
   bulletins are at http://arrl.org/bulletins.   
      
   Sunspot numbers for January 23 through 29 were 121, 150, 102, 109,   
   62, 70, and 96, with a mean of 101.4. 10.7 cm flux was 136.3, 135.5,   
   133.2, 137.9, 143.9, 157.2, and 156.4, with a mean of 142.9.   
   Estimated planetary A indices were 6, 5, 6, 6, 4, 5, and 7, with a   
   mean of 5.6. Estimated mid-latitude A indices were 5, 3, 3, 3, 3, 3,   
   and 6, with a mean of 3.7.   
   NNNN   
   /EX   
      
      
   )\/(ark   
      
   One of the great tragedies of life is the murder of a beautiful theory by a   
   gang of brutal facts. --Benjamin Franklin   
      
   --- FMail/Win32 1.60   
    * Origin:  (1:3634/12.71)   

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