HF Radio Conditions

red bars indicate a major solar flare

 

 

 

 

 

Gridsquares Worked 40m and 20m on FT8, August 1 to October 15, 2017. Actual log appears below that.

http://wg7j.reinalda.net/gridmapper/gridmapper.php
Call Grid Mode Sent Recd Date Time On

Band Freq
N7TWP CN84 FT8 -18 -9 20170802 214445

40m 7.075028
WA6PHR CM94 FT8 -6 -5 20170802 225800

40m 7.075008
WA6PHR CM94 FT8 -10 -6 20170803 195800

40m 7.074879
KC7W CN85 FT8 -17 -13 20170803 200615

40m 7.075004
WA7TC CN88 FT8 -12 -9 20170804 15545

40m 7.075207
W7THY DM37 FT8 -9 -7 20170804 225500

40m 7.075207
KK6NON DM13 FT8 -9 -15 20170805 11145

40m 7.075213
KK6NON
FT8

20170805 11530

40m 7.075213
N7MDW CN94 FT8 -1 -14 20170806 24415

40m 7.075042
WB6DKH DM14 FT8 -5 -14 20170806 31815

40m 7.074996
VE7VZ DN09 FT8 -7 -16 20170806 63200

40m 7.075703
KR6CU DM04 FT8 -13 -15 20170806 205615

40m 7.075703
WE7CB DN40 FT8 -5 -9 20170806 212945

40m 7.075244
WB6LOT DM14 FT8 -1 4 20170807 30545

40m 7.075303
WA6PHR CM94 FT8 -12 -3 20170807 44800

40m 7.074663
N6YFM DM03 FT8 -8 -1 20170807 52830

40m 7.075124
KG7YPB CN84 FT8 -13 -8 20170808 52300

40m 7.075653
KJ7NO DN31 FT8 -12 -6 20170808 61000

40m 7.075056
NU7F DN06 FT8 -7 -1 20170809 62700

40m 7.075129
W8ATE
FT8 -9 -17 20170811 50915

40m 7.075267
WT8P CN87 FT8 -17 -19 20170811 224900

40m 7.075053
W6BSD CM87 FT8 -6 -7 20170812 62000

40m 7.074534
K1WTF DM79 FT8 -9 -4 20170812 62315

40m 7.074534
NU4U EM85 FT8 -13 -14 20170812 63630

40m 7.074534
KC7YE CN87 FT8 -13 -20 20170812 232730

40m 7.074937
N0RQV DN70 FT8 -8 1 20170813 54415

40m 7.07451
K5KKW DM65 FT8 -13 -8 20170813 55815

40m 7.07451
W6NIK CM88 FT8 6 0 20170814 20515

40m 7.074368
WC6YJ CM97 FT8 2 2 20170814 32930

40m 7.074376
WB7UBC CN85 FT8 -5 -7 20170815 51800

40m 7.075228
W7WM DM79 FT8 2 -6 20170816 40430

40m 7.074831
VE6DV DO33 FT8 -7 -14 20170816 65100

40m 7.075602
W9SBE EN51 FT8 -12 -10 20170816 223100

20m 14.0752
W0OGH DM52 FT8 -11 1 20170817 34300

20m 14.074366
VE7KCY CN89 FT8 -4 -15 20170817 62130

20m 14.074837
KB0VHA DM79 FT8 -5 -5 20170818 34100

40m 7.07438
AA5WH EL09 FT8 -14 -16 20170818 194715

20m 14.074946
VA3MJR FN03 FT8 -7 -14 20170819 43630

40m 7.074396
N5BCA EM12 FT8 -7 -19 20170819 73145

40m 7.075192
N5DI DM33 FT8 -10 -16 20170820 40630

40m 7.074583
K6SJT DM13 FT8 2 -17 20170820 42245

40m 7.074492
KI6RRD DM03 FT8 -5 -17 20170820 62615

40m 7.075367
W6AER CM87 FT8 -13 -18 20170821 35900

40m 7.074453
W7DRM CN87 FT8 -8 0 20170821 214400

20m 14.075393
NM5TX DM65 FT8 -15 -19 20170821 220600

20m 14.074454
K7KRW DN41 FT8 -9 -12 20170822 32645

40m 7.074976
W6AAJ DM12 FT8 8 -9 20170822 220430

20m 14.074404
KB8BIP EM88 FT8 -16 -10 20170822 221215

20m 14.0753
KB8BIP
FT8

20170822 222045

20m 14.0753
WL7X BP64 FT8 -14 -8 20170822 232545

20m 14.075002
NO6E CN73 FT8 -15 -12 20170823 55730

40m 7.07491
K5TC EM32 FT8 -1 -8 20170823 231530

20m 14.074472
KG4OLG EM29 FT8 -1 -9 20170824 50830

40m 7.075401
AH6BI BK29 FT8 -13 -12 20170824 54345

40m 7.075179
K7KRW DN41 FT8 -7 -18 20170825 30500

40m 7.07509
N6QAD CM87 FT8 -9 -5 20170825 40600

40m 7.074424
AK7DB DM26 FT8 -11 -12 20170825 54730

40m 7.074552
KL7YK BP51 FT8 -5 -16 20170826 60830

40m 7.075487
K6BLY DM13 FT8 -5 -2 20170826 223015

20m 14.074851
WL7CG BP61 FT8 -15 -16 20170826 230145

20m 14.074921
KI7GZY DM41 FT8 -1 -7 20170827 233300

20m 14.074488
KC7CS DM43 FT8 -1 -15 20170828 60200

40m 7.074876
KI7AAY CN87 FT8 -15 -15 20170829 14415

40m 7.074925
WX0K EM39 FT8 -19 -18 20170829 230930

20m 14.074321
K5SGD EM13 FT8 -11 -9 20170829 235530

20m 14.074437
KF6DNJ CM97 FT8 -10 -18 20170831 40800

40m 7.075323
AJ0Z EN11 FT8 0 -15 20170831 55800

40m 7.074334
N6ED DM03 FT8 2 -12 20170831 221215

20m 14.075608
N5VX EM04 FT8 -2 -3 20170831 235845

20m 14.074402
N7ON DM09 FT8 -6 -6 20170901 60400

40m 7.075756
WA0RVK EM36 FT8 -9 -12 20170901 64115

40m 7.075285
KG5EIU EM12 FT8 0 -18 20170902 232400

20m 14.074339
K0UAS EM08 FT8 0 -14 20170902 234800

20m 14.074311
WD9HSY EN61 FT8 -2 -7 20170903 21415

20m 14.074305
KM4VAD EM55 FT8 -11 1 20170903 34515

20m 14.074305
K7JBL CN85 FT8 -8 -4 20170903 40930

20m 14.074413
N5BCA EM12 FT8 -6 -10 20170903 42200

20m 14.074487
KW7A DM49 FT8 0 -9 20170903 52545

20m 14.074578
N8OQ FM07 FT8 -17 -13 20170904 31330

20m 14.074418
K7NUU CN90 FT8 -6 -8 20170904 32100

20m 14.074418
NL7S BP51 FT8 -6 -11 20170907 64615

40m 7.074763
N0EO EN36 FT8 -4 -14 20170910 225015

20m 14.074345
VE7BC CN89 FT8 -6 -19 20170911 42000

20m 14.075635
KC8YDS EN91 FT8 -18 -15 20170914 31130

40m 7.074311
W8NOR DM42 FT8 2 -7 20170914 35030

40m 7.074411
N2VAN FN02 FT8 -12 -17 20170915 45545

40m 7.075195
VE7KCY CN89 FT8 -14 -13 20170918 62500

40m 7.074866
KG7RFU CN85 FT8 -11 -13 20170918 70415

40m 7.075424
K6ME
FT8 -7 -12 20170920 64415

40m 7.075046
AL7TC BP51 FT8 -7 -15 20170921 51315

40m 7.074831
KC5CYY EM04 FT8 -16 -16 20170923 53815

40m 7.07433
AL4Y BO49 FT8 -15 -2 20170923 55300

40m 7.074762
JA1CQK QM05 FT8 -13 -9 20170924 212130

20m 14.074403
JA1XEC QM06 FT8 -2 -14 20170924 212345

20m 14.074403
JA9BFN PM86 FT8 -10 -9 20171001 212800

20m 14.074343
KY0R DM78 FT8 -11 -11 20171001 215100

20m 14.074389
WG5N EM24 FT8 -20 -16 20171001 232930

20m 14.074251
K3UA EN90 FT8 -3 -19 20171001 234400

20m 14.07435
K4SAW EM67 FT8 -13 -10 20171001 234900

20m 14.07435
W6ZQ DM14 FT8 -5 -15 20171006 45800

40m 7.07435
KE7FEI DM43 FT8 6 -1 20171011 3915

20m 14.07435
KL7HFI CO28 FT8 -8 -11 20171014 221930

20m 14.07441
K3VPZ FM19 FT8 -15 -13 20171014 222830

20m 14.074412
WA2HIP FN54 FT8 -6 -19 20171014 230930

20m 14.074452
K9DJ EN54 FT8 -5 -8 20171015 530

20m 14.074452
N5LYJ EM05 FT8 -15 -9 20171015 1430

20m 14.074454

 

 

VOACAP Custom Predictions
This is not a real-time image. Click on the image below to go to voacap.com:

For the kind of map shown above, go here

 

 

foF2: F2-Layer Critical Frequency Map
This is a real-time image: a high-resolution global map of F2-layer
critical frequencies. This shows the maximum radio frequency that can be
reflected by the F2-region of the ionosphere at vertical incidence (that is,
when the signal is transmitted straight up into the ionosphere). This definitely
shows why, some days, short-skip on e.g. 40 meters is just not working.
From www.sws.bom.gov.au

 

 

 

More on the F and E layers, and Ionograms:
This is not a real-time image.
This site shows quite a bit of information on ionospheric conditions. Quite a learning
curve trying to interpret it. The image here is not current. You have to navigate to the
correct date and time from here:
==>Click on Locations, get the list of locations, and e.g. Pt Arguello (Santa Barbara Calif)
is one U.S. location. Other U.S. locations include Austin, Boulder, College AK, Guam, Idaho,
and Wallops Island. Kudos to K6HTN Kate for pointing out this site.

from ulcar.uml.edu/DIDBase/

 

Interpretation of ionograms:
Wikipedia
QSL Net

 

 

 

 

WSPR Mode

 

Worldwide WSPR Activity, can filter by callsign and band
WSPR Basics
WSPR Frequencies
Author K1JT WSPR page

 

 

 

 

My Log at QRZ.com (partial) - all modes - not current

 

 

 

 

 

 

Solar info courtesy N0NBH (not including the NOAA bar chart, and the foF2 maps)

 

 

 


 

Magnetic Loop and Small Loop Antennas

 

 


 

NAVTEX Stations at 518 kHz (517 USB dial, 1000Hz offset)

Station Identifier WX Broadcast Schedule (UTC)
Effective August 14, 2012 at 0000 UTC
Adak X (Broadcast terminated Dec ‘96)
Kodiak1 J
X
0130, 0530, 09302, 1330, 1730, 21302
0350, 0750, 11502, 1550, 1950, 23502
Astoria W 03402, 0740, 1140, 15402, 1940, 2340
San Francisco C 0020, 04202, 0820, 1220, 16202, 2020
Cambria Q 02402, 0640, 1040, 14402, 1840, 2240
Marianas V 0330, 0730, 1130, 1530, 1930, 2330
Honolulu O 0220, 0620, 10202, 1420, 1820, 22202
Boston F 0050, 0450, 08502, 1250, 1650, 20502
Portsmouth N 02102, 0610, 1010, 14102, 1810, 2210
CharlestonE0040, 0440, 08402, 1240, 1640, 20402
Miami A 0000, 0400, 08002, 1200, 1600, 20002
San Juan R 02502, 0650, 1050, 14502, 1850, 2250
New Orleans G 0100, 0500, 09002, 1300, 1700, 21002
1. Kodiak also broadcasts weather forecasts during time slots initially allocated to Adak.

2. Routine weather forecasts are broadcast four times per day with these being the normal times when repeats of Notices to Mariners are broadcast in lieu of weather. Weather warnings may be broadcast at any time.

The U.S. Coast Guard may on occasion have to defer or shorten the broadcast of a scheduled weather forecast via NAVTEX to ensure delivery of more urgent navigational and safety warnings.

NAVTEX receivers must be programmed with proper NAVTEX station and subject identifiers in order to receive weather broadcasts.

It is intended that all NAVTEX weather be broadcast with subject indicator "B", for Meteorological Warnings, which cannot be rejected by the NAVTEX receiver, or "E" for routine forecasts. However, this cannot be fully implemented at the present time within the U.S. Therefore, all mariners in U.S. waters should program their NAVTEX receivers to include subject indicator "E" in order to receive both warnings and routine weather forecasts via NAVTEX.

Effective April 22, 2008 U.S. NAVTEX broadcasts of weather forecasts containing a warning or a Dense Fog Advisory will be broadcast with a Subject Indicator of "B" vs. "E", such that receipt cannot be suppressed on the user's equipment. Mariners are encouraged to include subject indicator "E" in programming their NAVTEX in order to receive routine weather forecasts as well as weather warnings via NAVTEX.

Above table is from: NOAA

 

More Navtex links:

 


 

 


 

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Page last revised August 27, 2017

The graphic of the spark-gap radio station is taken from http://home.windstream.net/adye/webpages/Spark%20Gap.htm