Topband: Poor 160m DX Propagation

kq2m at kq2m.com kq2m at kq2m.com
Wed Apr 20 20:33:49 EDT 2022


Hi Roger,

I monitor solar weather regularly and over the past 6 weeks there have 
been lots of C and M class Solar flares with an X class flare thrown in. 
  Between all the flares, CME's and Radio storms there have been very few 
days when the K index has been below 2 even briefly, which, in Western 
CT is the propagation equivalent of throwing a wet blanket on a fire.  
Then add in the QRN from Thunder static and rain static plus at least 
FIVE Nor-easters in the past 6 weeks and you have all but eliminated 
most of the good band openings. I realize that the weather related 
storms don't affect propagation but all the qrn that they generate keeps 
some ops from wanting to turn on the radio to operate 160.

Perhaps the biggest cause of the reduced signal strength comes from the 
much higher Solar Flux and SSN numbers that we have been experiencing as 
cycle 25 ramps up.  The higher levels of ionization, daytime absorption 
and increased MUF are all negatively impacting 160 M openings around the 
world.  This will not improve significantly until the solar numbers are 
in decline again to low levels, hopefully not for another 5 - 6 years.

73

Bob, KQ2M


On 2022-04-20 11:11, Henk Remijn PA5KT via Topband wrote:
> https://www.spaceweatherlive.com/en/solar-activity/solar-cycle.html
> 
> 
> Op 20-4-2022 om 11:51 schreef Roger Kennedy:
>> Propagation on 160m between this part of Europe and North America 
>> seems to
>> have been really
>> poor for several weeks now . . .
>> 
>> RBN reports from across the pond are typically 20dB down on normal 
>> most of
>> the time . . . and hear very few NA stations on the band.
>> 
>> Not sure why that is . . .
>> 
>> Roger G3YRO
>> 
>> 
>> 
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