The rest of the article"Solar scientists have shown from the historical record that sunspot activity correlates well with climate change on earth. Fewer recent sunspots fits well with times of global cooling......"
Winter 2017-18: A harbinger of things to come?
- Termite
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Winter 2017-18: A harbinger of things to come?
"Life is a bitch. Shit happens. Adapt, improvise, and overcome. Acknowledge it, and move on."
- HTRN
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Re: Winter 2017-18: A harbinger of things to come?
It is warmer at mcmurdo than my current location.
FUCK WINTER.
FUCK WINTER.
HTRN, I would tell you that you are an evil fucker, but you probably get that a lot ~ Netpackrat
Describing what HTRN does as "antics" is like describing the wreck of the Titanic as "a minor boating incident" ~ First Shirt
Describing what HTRN does as "antics" is like describing the wreck of the Titanic as "a minor boating incident" ~ First Shirt
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Re: Winter 2017-18: A harbinger of things to come?
In fairness, it is summer down there.HTRN wrote:It is warmer at mcmurdo than my current location.
Fortuna Fortis Paratus
- Weetabix
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Re: Winter 2017-18: A harbinger of things to come?
Even worse than climate change is that low sunspot activity screws with HF propagation. I was all set to try to figure that out.
Note to self: start reading sig lines. They're actually quite amusing. :D
- Termite
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Re: Winter 2017-18: A harbinger of things to come?
Why would low sunspot activity negatively affect shortwave radio?Weetabix wrote:..... low sunspot activity screws with HF propagation.
"Life is a bitch. Shit happens. Adapt, improvise, and overcome. Acknowledge it, and move on."
- Weetabix
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Re: Winter 2017-18: A harbinger of things to come?
from: http://www.arrl.org/here-comes-the-sunLong-time users have found that the upper HF bands are reliably open for propagation only when the average number of sunspots is above certain minimum levels.
from here: https://www.electronics-notes.com/artic ... tivity.phpany form of radio communications that uses the HF bands and ionospheric radio propagation is very dependent upon the state of the ionosphere. The higher the levels of radiation received from the Sun, the greater the levels of ionisation in the ionosphere and in general this brings better propagation conditions for HF radio communications.
It is found that the number of sunspots on the Sun has a considerable effect on the levels of radiation emitted and hence impacting on the ionosphere. In turn this has a marked effect on radio communications of all forms.
Note to self: start reading sig lines. They're actually quite amusing. :D
- randy
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Re: Winter 2017-18: A harbinger of things to come?
What Weetabix said.
There are weekly reports that summarize sunspot activity using NASA and other space weather data to plug into propagation software (or calculate using tables if you are into self abuse) so that HF radio enthusiasts can plan their activity around where in the world they can talk in the next few days.
lately the conditions have, in technical terms, sucked. Right now (as I type) 40 Meters is good, but anything in the lower range is almost non-existent on some bands.
You can still play HF but your options are limited and often your ops are geared to what you can do, not what you want to do.
There are weekly reports that summarize sunspot activity using NASA and other space weather data to plug into propagation software (or calculate using tables if you are into self abuse) so that HF radio enthusiasts can plan their activity around where in the world they can talk in the next few days.
lately the conditions have, in technical terms, sucked. Right now (as I type) 40 Meters is good, but anything in the lower range is almost non-existent on some bands.
You can still play HF but your options are limited and often your ops are geared to what you can do, not what you want to do.
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...even before I read MHI, my response to seeing a poster for the stars of the latest Twilight movies was "I see 2 targets and a collaborator".
- Termite
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Re: Winter 2017-18: A harbinger of things to come?
RE randy and Weetabix:
I'm so used to dealing with VHF and UHF fm radio I forget about HF am. I do listen to talk radio on commercial AM, but I haven't listened to shortwave in a long time, even though I have a nice portable Grundig receiver.
I'm so used to dealing with VHF and UHF fm radio I forget about HF am. I do listen to talk radio on commercial AM, but I haven't listened to shortwave in a long time, even though I have a nice portable Grundig receiver.
"Life is a bitch. Shit happens. Adapt, improvise, and overcome. Acknowledge it, and move on."
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Re: Winter 2017-18: A harbinger of things to come?
Yeah I haven't seen temperatures like this since the time I was stupid enough to visit Canada in January. (In fairness it was only Nova Scotia, so still much warmer than the upper Plains.)HTRN wrote:It is warmer at mcmurdo than my current location.
FUCK WINTER.
Though it's interesting when you recalibrate so 17F is 'warm', so you go outside and do stuff in only pants and a long sleeve button down (not even flannel) shirt.
Maybe we're just jaded, but your villainy is not particularly impressive. -Ennesby
If you know what you're doing, you're not learning anything. -Unknown
Sanity is the process by which you continually adjust your beliefs so they are predictively sound. -esr
If you know what you're doing, you're not learning anything. -Unknown
Sanity is the process by which you continually adjust your beliefs so they are predictively sound. -esr
- Weetabix
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Re: Winter 2017-18: A harbinger of things to come?
If you're ever up at 1 or 2 AM, tune around the AM dial and listen for a while. I've heard stations from better than 500 miles away. Kind of fun.Termite wrote:RE randy and Weetabix:
I'm so used to dealing with VHF and UHF fm radio I forget about HF am. I do listen to talk radio on commercial AM, but I haven't listened to shortwave in a long time, even though I have a nice portable Grundig receiver.
Note to self: start reading sig lines. They're actually quite amusing. :D