[SFDXA] W4HM Daily HF-MF Radio Wave Propagation Forecast #2019-130
Bill
bmarx at bellsouth.net
Thu May 9 13:25:55 EDT 2019
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*---------------------------------------------------------------------------------------------------------------------*
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*W4HM Solar Cycle 24 Update and Solar Cycle 25 Forecast- Short and to
the point.*
**
*Solar minimum will begin later in 2019-2020 and may last longer than
any previous solar cycle in the 20th century. When solar cycle 25
finally gets underway it could be the weakest since the middle of the
19th century. Another “Dalton” type lesser grand solar minimum may occur
with a corresponding cooling of earth’s climate. *
**
*This would negate anthropogenic climate change (harmful man induced
global warming) if it were occurring, (((((WHICH IT ISN’T.)))))*
**
*For more “TRUTH” on the socialist lie of anthropogenic climate change
(harmful man induced global warming) check out
**https://wattsupwiththat.com**and **http://www.climatedepot.com*_****_
**
*On February 1, 2008 I forecasted that solar cycle 24 would be the
smallest solar cycle in the past 100 years. That forecast verified. I
also forecasted that solar cycle 25 would be almost non nonexistent SSN
<50**.*
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*----------------------------------------------------------------------------------------------------***
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*#130 issued Thursday May 9, 2019 at 1400 UTC*
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*GLOBAL (HF-MF 3000-30000 kHz- 300-3000 kHz) RADIO WAVE PROPAGATION
CONDITIONS EXPECTED-***
**
*Radio wave propagation condition “trend” on May 9, 2019- steady.*
**
*Radio wave propagation condition “trend” on May 10, 2019- steady.*
**
*Radio wave propagation condition “trend” on May 11, 2019- minor
deterioration.*
**
**
*NORTHERN HEMISPHERE HF RADIO WAVE PROPAGATION FORECAST *g*-*
**
*Received RF signal strength scale-*
*Very Good- +1 over S9 or greater*
*Good- S7-9*
*Fair- S4-6*
*Poor- S1-3*
*Very Poor- S0*
**
*3150-3400, 3500-4100, 4750-5050, 5700-6300 kHz- S9 at night and S1-2 at
day,
6900-7800, 9200-9995, 10000-10150, 11500-12200 kHz- S9+ 1 at night and
S4-7 at day,
13570-13850, 14000-14350, 15005-15900, 17450-17950, 18068-18168 kHz- S0
at night and S4-6 at day,
21000-21850 kHz- S0 at night and S1-2 at day,
24890-24990, 25600-26100 kHz- S0 at night and S0-1 at day,
*
*28000-29700 kHz- S0 at night and S0 at day.*
**
**
*SOUTHERN HEMISPHERE HF RADIO WAVE PROPAGATION FORECAST *g*-*
**
*3150-3400, 3500-4100, 4750-5050, 5700-6300 kHz- S9 at night and S1-2 at
day,
6900-7800, 9200-9995, 10000-10150, 11500-12200 kHz- S9+ 1 at night and
S4-7 at day,
13570-13850, 14000-14350, 15005-15900, 17450-17950, 18068-18168 kHz- S0
at night and S4-6 at day,
21000-21850 kHz- S0 at night and S1-2 at day,
24890-24990, 25600-26100 kHz- S0 at night and S0-1 at day,
*
*28000-29700 kHz- S0 at night and S0 at day.*
**
*GLOBAL (MF) (300-3000 KHZ) RADIO WAVE PROPAGATION CONDITIONS EXPECTED-*
**
*Received RF signal strength scale-*
*Very Good- +1 over S9 or greater*
*Good- S7-9*
*Fair- S4-6*
*Poor- S1-3*
*Very Poor- S0*
**
**
*FORECASTED NORTHERN HEMISPHERE SHORT PATH-*
*-East <-> West To 1100 Mi /1800 km *
*S7-8*
**North <-> South To 1100 Mi /1800 km*
*S8-9*
*+South <-> North To 1100 Mi /1800 km*
*S6-7*
*
**FORECASTED SOUTHERN HEMISPHERE SHORT PATH-*
*-East <-> West To 1100 Mi / 1800 km*
*S7-8*
**South <-> North To 1100 Mi /1800 km*
*S8-9*
*+North <-> South To 1100 Mi / 1800 km*
*S6-7*
*FORECASTED GREAT CIRCLE LONG OR SKEWED PATH- *
*Northern Hemisphere (TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans
Pacific and cross Equatorial propagation conditions in**excess of
approximately 3200 mi / 5200 km-*
*High Latitude*
*S2-3*
*Mid Latitude*
*S5-6*
*Low latitude*
*S3-4*
**
*FORECASTED GREAT CIRCLE LONG OR SKEWED PATH- *
*Southern Hemisphere (TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans
Pacific and cross Equatorial propagation conditions in**excess of
approximately 3200 mi / 5200 km-*
*High Latitude*
*S2-3*
*Mid Latitude*
*S5-6*
*Low latitude*
*S3-4*
**
**
*Received RF signal strength scale-*
*Very Good- +1 over S9 or greater*
*Good- S7-9*
*Fair- S4-6*
*Poor- S1-3*
*Very Poor- S0*
**
*This HF-MF Radio wave propagation forecast is produced based on the
SIGINT_CAP HF-MF radio wave propagation prediction software. X and O ray
tracing is included.*
*I wrote it beginning in the late 1980’s and continue to refine it in 2019.*
*But I’m sorry to say that it still can’t be distributed to the general
public.*
*It does outperform VOA CAP and Prop Lab.*
**
*I do check the actual band conditions at my location in the USA and
tweak the forecast manually where and when necessary.*
**
*I also check global HF-MF radio wave propagation conditions via remoted
radio*
*receivers on every continent of the globe and tweak the forecast
manually if*
*and when necessary.*
**
*And last but not least I look at ionsonde stations on every continent
of the*
*globe.*
**
*The hamateur radio JT65A mode RF signal levels received are based on 5
watts*
*and ½ wave dipole up at 40 feet.*
**
*The hamateur radio PSK31 mode RF signal levels received are based on 25*
*watts and ½ wave dipole up at 40 feet.*
**
*The hamateur radio CW mode RF signal levels received are based on 50 watts*
*and ½ wave dipole up at 40 feet.*
**
*The hamateur radio SSB RF mode signal levels received are based on 100
watts*
*and ½ wave dipole up at 40 feet.*
**
*The HF shortwave broadcast band AM Mode RF signal levels are based on*
*100,000 watts (100 kw) and a typical high gain VOA type curtain array*
*antenna.*
**
*The MF broadcast band AM Mode RF signal levels are based on 50,000
watts (50 kw) and an omnidirectional vertical antenna.*
**
*Please keep in mind that this is a relatively simplified HF-MF radio wave*
*propagation forecast, so as to keep it easily understandable and
applicable*
*by the average radio enthusiast.*
**
*Standard Disclaimer-*
**
*Note! I use error prone RAW public domain data from the NOAA Space*
*Environment Center, other U.S. government entities and educational*
*institutions, to produce this daily HF-MF radio wave propagation*
*forecast. This data is gathered and made public by the U.S. Government
using*
*taxpayer $$$ (including mine).*
**
*However this daily HF-MF propagation forecast that I produce from the RAW*
*public domain data is my personal intellectual property. Therefore this*
*daily HF-MF radio wave propagation forecast contained herein is
copyrighted ©*
*1988-2019 by Thomas F. Giella, W4HM.*
**
*Feel free without prior permission to redistribute this daily HF-MF
radio wave*
*propagation forecast, as long as you redistribute it in its entirety and*
*give me credit for it.*
**
*Also HF-MF radio wave propagation forecasting is still an inexact*
*science and therefore also an art. The forecasts are not official but for*
*educational and hobby related purposes only and are subject to human error*
*and acts of God, therefore no guarantee or warranty implied.*
**
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