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Internet Message Format | 1994-11-13 | 38.3 KB

Date: Mon, 26 Sep 94 13:06:44 PDT From: Info-Hams Mailing List and Newsgroup <info-hams@ucsd.edu> Errors-To: Info-Hams-Errors@UCSD.Edu Reply-To: Info-Hams@UCSD.Edu Precedence: Bulk Subject: Info-Hams Digest V94 #1066 To: Info-Hams Info-Hams Digest Mon, 26 Sep 94 Volume 94 : Issue 1066 Today's Topics: Daily Summary of Solar Geophysical Activity for 24 September STD: Weekly Solar Terrestrial Forecast & Review for 23 September TH-75A mods (marine VHF broadcast) Send Replies or notes for publication to: <Info-Hams@UCSD.Edu> Send subscription requests to: <Info-Hams-REQUEST@UCSD.Edu> Problems you can't solve otherwise to brian@ucsd.edu. Archives of past issues of the Info-Hams Digest are available (by FTP only) from UCSD.Edu in directory "mailarchives/info-hams". We trust that readers are intelligent enough to realize that all text herein consists of personal comments and does not represent the official policies or positions of any party. Your mileage may vary. So there. ---------------------------------------------------------------------- Date: Sat, 24 Sep 94 21:48:33 MDT From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!unixg.ubc.ca!quartz.ucs.ualberta.ca!alberta!ve6mgs!usenet@network.ucsd.edu Subject: Daily Summary of Solar Geophysical Activity for 24 September To: info-hams@ucsd.edu /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY 24 SEPTEMBER, 1994 /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ (Based In-Part On SESC Observational Data) SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 24 SEPTEMBER, 1994 ------------------------------------------------------------- !!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 267, 09/24/94 10.7 FLUX=072.8 90-AVG=079 SSN=020 BKI=2320 0102 BAI=004 BGND-XRAY=A1.2 FLU1=1.6E+06 FLU10=1.4E+04 PKI=2321 1112 PAI=005 BOU-DEV=013,039,013,004,004,006,003,012 DEV-AVG=011 NT SWF=00:000 XRAY-MAX= A4.8 @ 1236UT XRAY-MIN= A1.0 @ 1058UT XRAY-AVG= A1.6 NEUTN-MAX= +003% @ 1825UT NEUTN-MIN= -001% @ 1605UT NEUTN-AVG= +0.4% PCA-MAX= +0.1DB @ 1605UT PCA-MIN= -0.6DB @ 0330UT PCA-AVG= -0.2DB BOUTF-MAX=55216NT @ 2307UT BOUTF-MIN=55197NT @ 1738UT BOUTF-AVG=55207NT GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+081,+000,+000 GOES6-MAX=P:+145NT@ 2101UT GOES6-MIN=N:-013NT@ 1843UT G6-AVG=+111,+025,+002 FLUXFCST=STD:074,076,078;SESC:074,076,078 BAI/PAI-FCST=010,010,010/012,015,015 KFCST=2133 3222 2135 5222 27DAY-AP=007,004 27DAY-KP=2322 1221 1131 1111 WARNINGS= ALERTS= !!END-DATA!! NOTE: The Effective Sunspot Number for 23 SEP 94 was 22.0. The Full Kp Indices for 23 SEP 94 are: 1- 1o 0o 1- 1- 2o 1+ 1+ The 3-Hr Ap Indices for 23 SEP 94 are: 3 4 1 3 3 8 5 5 Greater than 2 MeV Electron Fluence for 24 SEP is: 3.6E+06 SYNOPSIS OF ACTIVITY -------------------- Solar activity was very low. No flares were observed. Region 7781 (S07W20) continues to grow slowly. Solar activity forecast: solar activity is expected to be very low. STD: A full-disk Yohkoh x-ray image has been appended to this report. Slightly enhanced x-ray emissions are beginning to become visible on the northeast limb near N06. The background x-ray flux is also climbing steadily into the A-class range. This is most likely attributed to slight but steady growth in Region 7781. The geomagnetic field was quiet to unsettled. Geophysical activity forecast: the geomagnetic field is expected to be quiet to unsettled. Event probabilities 25 sep-27 sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green Geomagnetic activity probabilities 25 sep-27 sep A. Middle Latitudes Active 30/30/30 Minor Storm 15/15/15 Major-Severe Storm 05/05/05 B. High Latitudes Active 25/25/25 Minor Storm 20/20/20 Major-Severe Storm 10/10/10 HF propagation conditions were normal over all regions. Near-normal propagation should continue, although there is a chance high and polar latitudes could see minor signal degradation (particularly on night-sector paths) over the next 3 days due to possible (as yet, unseen) effects of a transequatorial coronal hole. STD ESTIMATED CORONAL HOLE BOUNDARY LOCATIONS DERIVED FROM YOHKOH X-RAYS ------------------------------------------------------------------------ VALID AT 03:00UTC 24SEP94 "!H!" = Highly probable coronal hole locations. "!W!" = Weak x-ray emissions (possible weak coronal holes). !!! ! ! DOY=267 VALID=03:00UTC 24SEP94 !H! N07W15 N06W21 N04W25 N04W28 N00W30 S04W34 S06W34 S11W32 S12W31 !H! S12W29 S08W28 S02W26 S02W19 N02W16 N04W14 N07W13 N07W15 ! ! !H! N72E90 N68E35 N60E16 N65E10 N67E07 N61W11 N52W23 N55W50 N55W71 !H! N58W77 N58W90 ! ! !H! S75E90 S60E26 S64E14 S60E08 S62W07 S68W12 S64W19 S64W35 S68W56 !H! S72W90 ! ! !W! S20E19 S14E21 S10E21 S04E14 S04E09 S08E05 S16E01 S20E02 S25E02 !W! S28W05 S32W06 S37W02 S34E07 S28E10 S20E19 ! ! !W! N08E38 N12E34 N13E27 N16E23 N24E22 N24E14 N22E12 N18E14 N15E13 !W! N12E11 N07E16 N08E20 N08E26 N07E31 N04E37 N04E39 N08E38 !!! COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS ======================================================== LISTING OF SOLAR ENERGETIC EVENTS FOR 24 SEPTEMBER, 1994 -------------------------------------------------------- BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP NONE POSSIBLE CORONAL MASS EJECTION EVENTS FOR 24 SEPTEMBER, 1994 ------------------------------------------------------------ BEGIN MAX END LOCATION TYPE SIZE DUR II IV NO EVENTS OBSERVED INFERRED CORONAL HOLES. LOCATIONS VALID AT 24/2400Z --------------------------------------------------- ISOLATED HOLES AND POLAR EXTENSIONS EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN NO DATA AVAILABLE FOR ANALYSIS SUMMARY OF FLARE EVENTS FOR THE PREVIOUS UTC DAY ------------------------------------------------ Date Begin Max End Xray Op Region Locn 2695 MHz 8800 MHz 15.4 GHz ------ ---- ---- ---- ---- -- ------ ------ --------- --------- --------- NO EVENTS OBSERVED. REGION FLARE STATISTICS FOR THE PREVIOUS UTC DAY ------------------------------------------------ C M X S 1 2 3 4 Total (%) -- -- -- -- -- -- -- -- --- ------ Uncorrellated: 0 0 0 0 0 0 0 0 000 ( 0.0) Total Events: 000 optical and x-ray. EVENTS WITH SWEEPS AND/OR OPTICAL PHENOMENA FOR THE LAST UTC DAY ---------------------------------------------------------------- Date Begin Max End Xray Op Region Locn Sweeps/Optical Observations ------ ---- ---- ---- ---- -- ------ ------ --------------------------- NO EVENTS OBSERVED. NOTES: All times are in Universal Time (UT). Characters preceding begin, max, and end times are defined as: B = Before, U = Uncertain, A = After. All times associated with x-ray flares (ex. flares which produce associated x-ray bursts) refer to the begin, max, and end times of the x-rays. Flares which are not associated with x-ray signatures use the optical observations to determine the begin, max, and end times. Acronyms used to identify sweeps and optical phenomena include: II = Type II Sweep Frequency Event III = Type III Sweep IV = Type IV Sweep V = Type V Sweep Continuum = Continuum Radio Event Loop = Loop Prominence System, Spray = Limb Spray, Surge = Bright Limb Surge, EPL = Eruptive Prominence on the Limb. SPECIAL INSERT: YOHKOH FULL-DISK X-RAY IMAGE -------------------------------------------- 23 September 1994, 03:00 UTC North .......,,... ...,,:::::;;;::,.. ...... ...,,,:::;;--;;;;;::,. ............ ...,,::;;;;--;:::::,,,,,. ...... ,,::::::,,..... ..,::;;;;;:;::::,,,,,,.....,,,...... ......,,:;;;;::,,... .....,:;;::::::,,::,,,.,,....,,,,,,...... .... ...,;;;;::,,.. ..,,,::;;::::::::,,,,,,.....,,...,...,...... . .... ..,,:;;::,,.. ..,,,:;;-;;:::,::::::,,,,....,,,,,,,,.......... ..........,,:;::,.... .,:;-++---;:::,,::,,,,,,,,.......,,.,,.......... . ..........:-;:,,.. .,:+|||--;;;;::::,,,,,,,,,,,.......,,,.,.,... ......,,.,,:-;::,,... .:-+||++----;::::::::,,.........,........... ................,,,,;---;;::,,. .,:-+|++----;;;:::::::,,,,.. .............. ..... .,,:.,,,,,,..,.,:21--;;::,. ..:;+!!--------;;;:::,,,,... .......,,,,..........,.,,,,,,,,,..,,:;;:-;;::,, .,;|!12-;;--+!-;;;::,.......... ......,.,,,,,,....,..,.,,.:,.,-,,,,::::--;::,, .,-!12|::;;;-;;:::,. ..,,...........:,,........,,:,....,,,...,,:::::,:--;::,, .,:-+|1!;::::::::,,.,,:,,,...,...,.,,,,,........ . ......,,,,-;:,:::-+;:,,. .,:;+|!1;;::,,,,,,,:::,,,,....,...,,.,,,,,:::,,,,..... ...,,,,,,::::::--;:,.. ,,:;--|1+;::,,,,,:::::,,,.....,......,,,::-|2!;:;;::,,. .,-:::,:,:,:::++-;:,. ,::;-+|!|;;::,::::::::::::,,..........:,:;-#@*|+-;:::,,. .,::::::,,,:,:+++-;;:, ,:;;--+||-;::,,::::;|;:::::,.... .......,:;--;;:::::::,..,::;;;:;::;::-|--;;:,, ,:;;;--+++-;:,,,,,,:+++-;::,,... .......,,::::::::,:,,,.,::::;;;;::::;+-;::,,.. ,,,::;---++-:::::::--|!||+::::,.........,,,,,,::;-:,,,,,::::::;:::::;;::,,.. ..,,::;------::;;;:;-!21|-;;;;::,,..........,,,:,,,,::::::,,,:::::;;:,,... ...,,::;;;;;--;:::;-+!|+-;;;;::,,,,..............,,,,,,,,,,:,::::::,,... ....,,:::::;;;---;;;;;;;;;;;;:,,,::,,,..........,,,,,,,,,,,,,::;;:,.. ...,:::;;;;--+++--;;;;::::::::;:,,,,,,,,,,,,,,,.,,,,,,,,,:--:,... ....,,,:;;;--+++---;;;;;;::::::,,,,,,,,,,,,,,,,:,,,,:;;;::,. .......,,:::;;;;-----;;:,,..,,,,,,,,,,,,,,,,,,:,,,:,,... ....,,,,:::::::,,.. . ... .. . .... ..... . South KEY: East and west limbs are to the left and right respectively. Emission strength, from minimum to maximum are coded in the following way: [space] . , : ; - + | ! 1 2 3 4 * # @ Units used are arbitrary, for illustrative purposes. Get "showasc.zip" from "pub/solar/Software" at the anonymous FTP site: ftp.uleth.ca (IP # 142.66.3.29) to view these images on VGA screens. Remove all but the image data before typing "showasc filename". ** End of Daily Report ** ------------------------------ Date: Fri, 23 Sep 94 14:29:46 MDT From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!unixg.ubc.ca!quartz.ucs.ualberta.ca!alberta!ve6mgs!usenet@network.ucsd.edu Subject: STD: Weekly Solar Terrestrial Forecast & Review for 23 September To: info-hams@ucsd.edu --- SOLAR TERRESTRIAL FORECAST AND REVIEW --- September 23 to October 02, 1994 Report Released by Solar Terrestrial Dispatch P.O. Box 357, Stirling, Alberta, Canada T0K 2E0 Accessible BBS System: (403) 756-3008 SKYCOM Software Announcement: (403) 756-2386 --------- ** SOFTWARE DISTRIBUTION ANNOUNCEMENT ** The Solar Terrestrial Dispatch is seeking individuals who are interested in helping us redistribute and market the line of software products we have developed. Specifically, we will shortly permit authorized individuals to RESELL and distribute the following: * BCAST Solar and Geophysical Database Management Software. Contains all of the utilities necessary to use the Extended Database below. Also contains a large limited database of solar and geophysical data from 04 Sep 1991 to the 1993 with the ability to track solar and geophysical information to the present date. A powerful solar cycle analyst. * Extended Database of Solar and Geophysical Data. Contains Sunspot numbers from 1818 to 1993, solar flux values from 1947 to 1993, and geomagnetic data from 1932 to 1993. Ideal for those studying solar cycles and related statistics on solar or geomagnetic storms. * Professional Dynamic Auroral Oval Simulation Software. Determine when and where to look to see auroral activity. Simulates the position and appearance of auroral activity from any location on the Earth. Also simulates the appearance and location of the Sun and Moon and comes with an extensive database of auroral activity sightings. * SKYCOM HF Ionospheric Signal Analyst Propagation Software. A sophisticated and powerful high-frequency propagation program. Ideal for radio communicators or listeners, commercial broadcasters, educators, and anyone else interested in radio propagation. Produce broadcast coverage maps, global maps of maximum usable frequencies, maps showing the proximity of signal paths to the auroral zones, and MUCH more. Ray-trace signals between any two paths. Produce an all-band spectrum analysis showing what bands or frequencies to use at specific times of the day, what transmission elevation angles to use, modes of communication, magnitude of multipathing, and MUCH more than is possible to list here. SKYCOM outranks most other propagation programs in features, power, and flexibility. There are no special personal requirements to become authorized. Anyone can participate. To find out how, send a request for more information to: Oler@Ultrix.Uleth.CA or to: COler@Solar.Stanford.Edu along with your postal mailing address. We will send the required information to you through postal mail. --------- SOLAR AND GEOPHYSICAL ACTIVITY FORECASTS AT A GLANCE ---------------------------------------------------- |10.7 cm|HF Propagation +/- CON| Mag| Aurora | |SolrFlx|LO MI HI PO SWF %MUF %|K Ap|LO MI HI| --|-------|-----------------------|----|--------| September 23| 072 | G G F F 05 -05 75|2 08|NV NV LO| 24| 074 | G G P P 05 -15 70|3 15|NV NV MO| 25| 074 | G G P P 05 -15 65|3 15|NV NV MO| 26| 074 | G G P F 05 -10 65|2 12|NV NV MO| 27| 076 | G G F F 05 -05 70|2 10|NV NV LO| 28| 076 | G G F F 05 00 70|2 08|NV NV LO| 29| 076 | G G F F 05 00 70|2 08|NV NV LO| 30| 078 | G G F F 05 00 65|2 08|NV NV LO| October 01| 078 | G G F F 05 00 65|2 08|NV NV LO| 02| 076 | G G F F 05 00 65|2 08|NV NV LO| PEAK PLANETARY 10-DAY GEOMAGNETIC ACTIVITY OUTLOOK (23 SEP - 02 OCT) ________________________________________________________________________ | EXTREMELY SEVERE | | | | | | | | | | | HIGH | | VERY SEVERE STORM | | | | | | | | | | | HIGH | | SEVERE STORM | | | | | | | | | | | MODERATE | | MAJOR STORM | | | | | | | | | | | LOW - MOD. | | MINOR STORM | | | | | | | | | | | LOW | | VERY ACTIVE | | | | | | | | | | | NONE | | ACTIVE | | * | * | | | | | | | | NONE | | UNSETTLED | **|***|***|***|** |** |** |** |** |***| NONE | | QUIET |***|***|***|***|***|***|***|***|***|***| NONE | | VERY QUIET |***|***|***|***|***|***|***|***|***|***| NONE | |-------------------|---|---|---|---|---|---|---|---|---|---|------------| | Geomagnetic Field |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| Anomaly | | Conditions | Given in 8-hour UT intervals | Intensity | |________________________________________________________________________| CONFIDENCE LEVEL: 70% NOTES: Predicted geomagnetic activity is based heavily on recurrent phenomena. Transient energetic solar events cannot be predicted reliably over periods in excess of several days. Hence, there may be some deviations from the predictions due to the unpredictable transient solar component. 60-DAY GRAPHICAL ANALYSIS OF GEOMAGNETIC ACTIVITY ____________________________________________________________ 30 | M | 28 | AM | 27 | A AAM | 26 | A AAM | 24 | A AAM | 22 | A AAM | 21 | AA AAM | 20 | AA AAM | 18 | AA AAMA | 16 | A A AA AAMA | 15 | A AAAAAA UAAMAA | 14 | A AAAAAA UAAMAA | 12 | AU AAAAAA U U UAAMAA U | 10 | UAU AAAAAA U U UAAMAA U | 9 | UAUU AAAAAAU U U UAAMAAUUU UU | 8 | UAUUUU AAAAAAU UU U U UUAAMAAUUU UU | 6 |QUAUUUUU Q AAAAAAUUU UUUU UUUU UQ UUAAMAAUUUUUU Q | 4 |QUAUUUUUQQ QQ QAAAAAAUUUQUUUUQUUUU QUQQ UUAAMAAUUUUUUQQ Q | 3 |QUAUUUUUQQQQQQ QAAAAAAUUUQUUUUQUUUUQQQUQQQUUAAMAAUUUUUUQQQQQ| 2 |QUAUUUUUQQQQQQQQAAAAAAUUUQUUUUQUUUUQQQUQQQUUAAMAAUUUUUUQQQQQ| 0 |QUAUUUUUQQQQQQQQAAAAAAUUUQUUUUQUUUUQQQUQQQUUAAMAAUUUUUUQQQQQ| ------------------------------------------------------------ Chart Start Date: Day #207 NOTES: This graph is determined by plotting the greater of either the planetary A-index or the Boulder A-index. Graph lines are labelled according to the severity of the activity which occurred on each day. The left- hand column represents the associated A-Index for that day. Q = Quiet, U = Unsettled, A = Active, M = Minor Storm, J = Major Storm, and S = Severe Storm. CUMULATIVE GRAPHICAL CHART OF THE 10.7 CM SOLAR RADIO FLUX ---------------------------------------------------------- ____________________________________________________________ 101 | | 100 | * | 099 | * | 098 | * | 097 | * | 096 | * | 095 | * * | 094 | **** | 093 | **** | 092 | ***** | 091 | ***** | 090 | ****** | 089 | * ******* | 088 | * ******* | 087 | * ******** | 086 | * ********* | 085 | * ********* | 084 | ** ********* | 083 | ** * ********* | 082 | ** ************ | 081 | **** ************* | 080 | **** ************* | 079 | **** ************* | 078 | * **** * ************** | 077 | ********* *************** | 076 | * * * * ********* **************** | 075 |* **** ****** *********** **************** | 074 |************************** ***************** | 073 |************************** ***************** | 072 |*************************** ** * ****************** * | 071 |****************************************************** * *| 070 |************************************************************| 069 |************************************************************| ------------------------------------------------------------ Chart Start: Day #206 GRAPHICAL ANALYSIS OF THE 5-DAY AVERAGE SOLAR FLUX -------------------------------------------------- ____________________________________________________________ 096 | | 095 | * | 094 | ** | 093 | ** | 092 | **** | 091 | ***** | 090 | ****** | 089 | ******* | 088 | ******** | 087 | ******** | 086 | ********* | 085 | ********* | 084 | ********* | 083 | *********** | 082 | ** *********** | 081 | **** *********** | 080 | ***** ************* | 079 | ****** ************* | 078 | ****** ************** | 077 | ******** *************** | 076 |** ********* **************** | 075 |*** ********************* ***************** | 074 |***************************** ****************** | 073 |****************************** ****************** | 072 |******************************* ******************** | 071 |********************************************************** | 070 |************************************************************| 069 |************************************************************| ------------------------------------------------------------ Chart Start: Day #206 GRAPHICAL ANALYSIS OF THE 10-DAY AVERAGE SOLAR FLUX -------------------------------------------------- ____________________________________________________________ 091 | | 090 | **** | 089 | ****** | 088 | ****** | 087 | ******* | 086 | ******** | 085 | ******** | 084 | ********** | 083 | ********** | 082 | ************ | 081 | ************ | 080 | ************** | 079 | ****** ************** | 078 |* ******** ************** | 077 |*** ********** **************** | 076 |**** ************ ***************** | 075 |******** ******************* ****************** | 074 |******************************** ******************** | 073 |********************************** ********************** | 072 |*********************************** ************************| 071 |************************************************************| 070 |************************************************************| ------------------------------------------------------------ Chart Start: Day #206 GRAPHICAL ANALYSIS OF THE 20-DAY AVERAGE SOLAR FLUX -------------------------------------------------- ____________________________________________________________ 084 | | 083 | ******** | 082 | ************ | 081 |** **************| 080 |*** ***************| 079 |***** *****************| 078 |******* ******************| 077 |********** ******* *******************| 076 |************* ************** ***********************| 075 |************************************************************| 074 |************************************************************| ------------------------------------------------------------ Chart Start: Day #206 GRAPHICAL ANALYSIS OF 90-DAY AVERAGE SOLAR FLUX ----------------------------------------------- ____________________________________________________________ 081 | | 080 | ******* | 079 |********************** *********************| 078 |************************************************************| 077 |************************************************************| ------------------------------------------------------------ Chart Start: Day #206 NOTES: The 10.7 cm solar radio flux is plotted from data reported by the Penticton Radio Observatory (formerly the ARO from Ottawa). High solar flux levels denote higher levels of activity and a greater number of sunspot groups on the Sun. CUMULATIVE GRAPHICAL CHART OF SUNSPOT NUMBERS --------------------------------------------- ____________________________________________________________ 106 | | 101 | * | 096 | * | 091 | ** * | 086 | **** * | 081 | ****** | 076 | ****** | 071 | * * ****** | 066 | * * ******* | 061 | ****** ******* | 056 | ********* ********** * | 051 | ********* ********** * | 046 | ********* * ********** * | 041 | ********* * *********** * | 036 | ************ ** ************* | 031 | * ************* ** ************* | 026 | * ** ************* ** ************* ** | 021 |*** * ** *** ************* ** **************** ** | 016 |*** * ********************** ** * **************** *** | 011 |********************************************************* *| 006 |********************************************************* *| 001 |********************************************************* *| 000 |************************************************************| ------------------------------------------------------------ Chart Start: Day #207 NOTES: The graphical chart of sunspot numbers is created from the daily sunspot number counts as reported by the SESC. HF RADIO SIGNAL PROPAGATION PREDICTIONS (23 SEP - 02 OCT) High Latitude Paths ________________________________________________________ | EXTREMELY GOOD | | | | | | | | | | | | VERY GOOD | | | | | | | | | | | CONFIDENCE | GOOD | | | | | | | | | | | LEVEL | FAIR |***| **| **| **|***|***|***|***|***|***| ------- | POOR | |* |* |* | | | | | | | 70% | VERY POOR | | | | | | | | | | | | EXTREMELY POOR | | | | | | | | | | | |----------------|---|---|---|---|---|---|---|---|---|---| | PROPAGATION |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| | QUALITY | Given in 8 Local-Hour Intervals | -------------------------------------------------------- Middle Latitude Paths ________________________________________________________ | EXTREMELY GOOD | | | | | | | | | | | | VERY GOOD | | | | | | | | | | | CONFIDENCE | GOOD |***| **| **|***|***|***|***|***|***|***| LEVEL | FAIR | |* |* | | | | | | | | ------- | POOR | | | | | | | | | | | 70% | VERY POOR | | | | | | | | | | | | EXTREMELY POOR | | | | | | | | | | | |----------------|---|---|---|---|---|---|---|---|---|---| | PROPAGATION |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| | QUALITY | Given in 8 Local-Hour Intervals | -------------------------------------------------------- Low Latitude Paths ________________________________________________________ | EXTREMELY GOOD | | | | | | | | | | | | VERY GOOD | | | | | | | | | | | CONFIDENCE | GOOD |***|***|***|***|***|***|***|***|***|***| LEVEL | FAIR | | | | | | | | | | | ------- | POOR | | | | | | | | | | | 85% | VERY POOR | | | | | | | | | | | | EXTREMELY POOR | | | | | | | | | | | |----------------|---|---|---|---|---|---|---|---|---|---| | PROPAGATION |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| | QUALITY | Given in 8 Local-Hour Intervals | -------------------------------------------------------- NOTES: NORTHERN HEMISPHERE SOUTHERN HEMISPHERE High latitudes >= 55 deg. N. | High latitudes >= 55 deg. S. Middle latitudes >= 40 < 55 deg. N. | Middle latitudes >= 30 < 55 deg. S. Low latitudes < 40 deg. N. | Low latitudes < 30 deg. S. AURORAL ACTIVITY PREDICTIONS (23 SEP - 02 OCT) High Latitude Locations ________________________________________________________ | EXTREMELY HIGH | | | | | | | | | | | CONFIDENCE | VERY HIGH | | | | | | | | | | | LEVEL | HIGH | | | | | | | | | | | ------- | MODERATE | * | * | | | | | | | | | 70% | LOW |***|***|***|** |** |** |** |** |** |***| | NOT VISIBLE |***|***|***|***|***|***|***|***|***|***| |----------------|---|---|---|---|---|---|---|---|---|---| | AURORAL |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| | INTENSITY | Eve.Twilight/Midnight/Morn.Twilight | -------------------------------------------------------- Middle Latitude Locations ________________________________________________________ | EXTREMELY HIGH | | | | | | | | | | | CONFIDENCE | VERY HIGH | | | | | | | | | | | LEVEL | HIGH | | | | | | | | | | | ------- | MODERATE | | | | | | | | | | | 70% | LOW | | | | | | | | | | | | NOT VISIBLE |***|***|***|***|***|***|***|***|***|***| |----------------|---|---|---|---|---|---|---|---|---|---| | AURORAL |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| | INTENSITY | Eve.Twilight/Midnight/Morn.Twilight | -------------------------------------------------------- Low Latitude Locations ________________________________________________________ | EXTREMELY HIGH | | | | | | | | | | | CONFIDENCE | VERY HIGH | | | | | | | | | | | LEVEL | HIGH | | | | | | | | | | | ------- | MODERATE | | | | | | | | | | | 95% | LOW | | | | | | | | | | | | NOT VISIBLE |***|***|***|***|***|***|***|***|***|***| |----------------|---|---|---|---|---|---|---|---|---|---| | AURORAL |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun| | INTENSITY | Eve.Twilight/Midnight/Morn.Twilight | -------------------------------------------------------- NOTE: Version 2.00c of our Professional Dynamic Auroral Oval Simulation Software Package is now available. This professional software is particularly valuable to radio communicators, aurora photographers, educators, and astronomers. For more information regarding this software, contact: "Oler@Rho.Uleth.CA", or "COler@Solar.Stanford.Edu". For more information regarding these charts, send a request for the document, "Understanding Solar Terrestrial Reports" to: "Oler@Rho.Uleth.Ca" or to: "COler@Solar.Stanford.Edu". This document, as well as others and related data/forecasts exist on the STD BBS at: (403) 756-3008. ** End of Report ** ------------------------------ Date: 26 Sep 1994 17:57:33 GMT From: ihnp4.ucsd.edu!swrinde!gatech!news.byu.edu!netline-fddi.jpl.nasa.gov!nntp-server.caltech.edu!news.cerf.net!hacgate2.hac.com!usenet@network.ucsd.edu Subject: TH-75A mods (marine VHF broadcast) To: info-hams@ucsd.edu In article 001588CE@olympus.net, vaughnwt@olympus.net (Bill Vaughn) writes: >In article <CwHrtw.7q2@borland.com> eomiya@genghis (Elliot Omiya) writes: >>Is it possible to modify a Kenwood TH-75A (2m/440) so that it can >>broadcast on VHF 9 and 16 (I think 16 is 156.800 but I'm not sure). >>Also, is it "legal" to do such a modification? > >This is very illegal. You will be better off just buying a marine radio. They >are much cheaper than ham gear. And you will have a 25 watt rig. Even after >you get your marine station license it would be cheaper than your handheld. >Don't take short cuts with your safety on the water. Actually, doing the modification is not illegal. Transmitting on those frequencies with a transmitter that is not type accepted for such use would be illegal, however. Except that in an emergency, it is legal to use whatever means necessary to summon assistance. The FCC rules for marine radios require an (expensive) license just to possess one on a boat, even if you don't use it. To me, this is very counter productive as far as safety is concerned, as it discourages the occasional boater from obtaining a useful piece of emergency equipment. However, if you have an amateur license, your station is licensed by the FCC (as required by 47 CFR 80.13(a) for all stations in the maritime service) and you are breaking no laws just because it is capable of being used on frequencies outside the amateur bands. If you actually use that capability in a non-emergency, then the FCC can come down on you. Disclaimer: I'm no lawyer and wouldn't want to be one. -Brian suggs@tcville.es.hac.com ------------------------------ End of Info-Hams Digest V94 #1066 ******************************