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Jan 4, 2016 23:35
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The signal bounces off the ionosphere after the sun goes down, so generally they turn it way down at night because its a condition of their license https://en.wikipedia.org/wiki/AM_broadcasting#Operation but they also don't always crank the broadcast power up all the way to their license limit until their big listen program are on, and this case it was the rush/hannity/whoever idiot afternoon power block killing the line. normal daytime broadcast power wasn't enough to raise the signal floor until they got on
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Jan 4, 2016 23:38
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ionosphere reflects AM better at night so they have to crank the power down not to step on stations that are not competing during the day
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Jan 4, 2016 23:39
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Panty Saluter posted:Am stations use low power at night and raise it during the day. Not sure why, maybe to reduce interference? I suppose signals go further when it's cooler. The ionosphere changes when it's being shielded from the Sun by the Earth and signals propagate farther at night (and during the winter).
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Jan 4, 2016 23:44
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thanks for being the third person to say this
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Jan 4, 2016 23:54
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Awia posted:thanks for being the third person to say this this but unironically, i have to hear things three times before they stick
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Jan 5, 2016 00:15
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signal propagation, man ordinarily each of those posts would only be readable by 1/3 of the pos but they go farther in wintertime
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Jan 5, 2016 00:15
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lol if you've never been zapped by ringing voltage while toning pairs
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Jan 5, 2016 00:41
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Captain Foo posted:lol if you've never been zapped by ringing voltage while toning pairs idk if it was ringing voltage but my bare arm brushed an aerial phone drop with bad dry rot and i got a pretty nasty jolt
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Jan 5, 2016 01:27
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fishmech posted:this couldn't have gone to the states, unless this happened very recently. it would have been 478 as it was an 0845 number, and free dialup isps were still a thing until well into the mid naughties.
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Jan 5, 2016 01:44
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Panty Saluter posted:Am stations use low power at night and raise it during the day. Not sure why, maybe to reduce interference? I suppose signals go further when it's cooler. generally, am stations that turn down their power at night are doing that because another station on the same band is close enough that at night there may be interference. and the other station has higher priority for that frequency. so it's a condition of their licensing. most frequently, thi will be some rinky dink local station that's on the same frequency as a clear channel (not the company) AM station on their side of the country. the clear channel station gets absolute priority for their frequency so eg 880 khz WCBS out of NYC gets undisputed access to reception on 880 all over the eastern half of the country and all other 880s have to turn down at night if they pose a risk of interference. there used to be a lot of am stations that shut down entirely at "night" as a condition of license too, still a couple around but not much. but separate from all that, sometimes stations turn their signal power down at night simply because it saves them money. power ain't free after all, and often you can still serve your main broadcast area for your advertisers good enough which much lower power at night. nothing to do with avoiding interference, just wanting to have some extra cash goddamnedtwisto posted:it would have been 478 as it was an 0845 number, and free dialup isps were still a thing until well into the mid naughties. well you might as well just say the whole number at this point, being 478 area code and a 45x exchange means it would be somewhere in Macon, GA if it really was an active number.
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Jan 5, 2016 03:12
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fishmech posted:well you might as well just say the whole number at this point, being 478 area code and a 45x exchange means it would be somewhere in Macon, GA if it really was an active number. what CLLI is that exchange hosted in wikipedia brown  youre slipping man
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Jan 5, 2016 03:14
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fishmech is unironically the best
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Jan 5, 2016 03:19
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LastInLine posted:fishmech is unironically the best
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Jan 5, 2016 03:19
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LastInLine posted:fishmech is unironically the best
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Jan 5, 2016 03:20
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LastInLine posted:fishmech is unironically the best
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Jan 5, 2016 03:31
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fishmech posted:generally, am stations that turn down their power at night are doing that because another station on the same band is close enough that at night there may be interference. and the other station has higher priority for that frequency. so it's a condition of their licensing. most frequently, thi will be some rinky dink local station that's on the same frequency as a clear channel (not the company) AM station on their side of the country. the clear channel station gets absolute priority for their frequency so eg 880 khz WCBS out of NYC gets undisputed access to reception on 880 all over the eastern half of the country and all other 880s have to turn down at night if they pose a risk of interference. the minor league hockey team there used to be called the Macon Whoopee, and it is to my eternal regret that i never got a souvenir jersey before the team left
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Jan 5, 2016 03:41
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I used to borrow my dad's multiband/shortwave radio and go tuning around to see what I could get at night. used to pick up a few Chicago stations from Calgary.
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Jan 5, 2016 03:53
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fishmech posted:well you might as well just say the whole number at this point, being 478 area code and a 45x exchange means it would be somewhere in Macon, GA if it really was an active number. iunno, it was over a decade ago and not even at a company i worked at and i'm not spending days on google to score internet points, what would be the point of that?
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Jan 5, 2016 08:28
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goddamnedtwisto posted:i'm not spending days on google to score internet points, what would be the point of that?
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Jan 5, 2016 08:50
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AM is still used by people??  (in before a bunch of new worlders barge in and tell me that is makes perfect sense because)
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Jan 5, 2016 12:07
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KARMA! posted:AM is still used by people?? it is. its mainly for sports and conservative talk radio where the fidelity of fm isnt needed but the range of am is
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Jan 5, 2016 12:52
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LastInLine posted:it is. its mainly for sports and conservative talk radio where the fidelity of fm isnt needed but the range of am is low-power am licenses are also used a lot in the uk by religious buildings (churches and mosques mostly) in built-up areas so they can transmit the bells/call to prayer to locals without breaking noise-abatement rules of course a lot of them are moving to fm because it seems like the only place you can find an am receiver is on a cheap car stereo
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Jan 5, 2016 13:05
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KARMA! posted:AM is still used by people?? never ride in a skilled trades fleet vehicle ever
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Jan 5, 2016 15:57
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BangersInMyKnickers posted:never ride in a skilled trades fleet vehicle ever one of their reasons i hated going anywhere with my dad driving is that the radio in his car is not only permanently tuned to conservative loudmouths, but it's a distant station so what you hear is BZZZZZZZZZZWHHHHIIIINNNNEEE liberals ZZZZZZZZTTTTTTTT welfare
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Jan 5, 2016 16:55
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KARMA! posted:AM is still used by people?? in america we even have it digital
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Jan 5, 2016 17:11
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There's some kind of AM station near me that my computer speakers pick up, and it's hella annoying. They're some decent Klipsch speakers and they didn't used to pick up any signal, but now christian rock quietly mumbles out of them all day. How do I stop this?
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Jan 5, 2016 17:13
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buy actually decent speakers that have effective shielding
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Jan 5, 2016 17:20
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LeftistMuslimObama posted:There's some kind of AM station near me that my computer speakers pick up, and it's hella annoying. They're some decent Klipsch speakers and they didn't used to pick up any signal, but now christian rock quietly mumbles out of them all day. How do I stop this? get a different length audio in cable. if that doesn't work, you're boned.
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Jan 5, 2016 17:21
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LastInLine posted:it is. its mainly for sports and conservative talk radio where the fidelity of fm isnt needed but the range of am is also there are still parts of the godforsaken wasteland we call rural america that only get AM radio service
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Jan 5, 2016 17:23
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BangersInMyKnickers posted:get a different length audio in cable. if that doesn't work, you're boned. couldn't it also be coming in on the power line? like especially if it uses and external transformer the low voltage dc line wouldn't self-shield very well
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Jan 5, 2016 17:25
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Kilpsch is okayish and I doubt they skimped so hard as to not do any kind of filtering on the power side of their amp circuit. seems way more likely that its amplified noise coming in on the input
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Jan 5, 2016 17:28
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their computer speakers are made overseas in a not-great factory. i wouldnt be THAT surprised if some shoddy components had found their way in
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Jan 5, 2016 17:32
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Panty Saluter posted:couldn't it also be coming in on the power line? like especially if it uses and external transformer the low voltage dc line wouldn't self-shield very well stick a ferrite bead on each set of cords and see which kills it. at least that worked for the old speakers i had that picked up a spanish religous station
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Jan 5, 2016 17:51
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LeftistMuslimObama posted:There's some kind of AM station near me that my computer speakers pick up, and it's hella annoying. They're some decent Klipsch speakers and they didn't used to pick up any signal, but now christian rock quietly mumbles out of them all day. How do I stop this? get an anti-exorcism
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Jan 6, 2016 05:09
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The_Franz posted:one of their reasons i hated going anywhere with my dad driving is that the radio in his car is not only permanently tuned to conservative loudmouths, but it's a distant station so what you hear is BZZZZZZZZZZWHHHHIIIINNNNEEE liberals ZZZZZZZZTTTTTTTT welfare actually sounds like you're picking the signal up perfectly
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Jan 6, 2016 05:22
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fishmech posted:
We are one. But excitingly the FCC is probably going to allow FM translators for AM stations, and the FM translator can be on 24 hours (at which point it's not really a translator per se as we'll have a separate STL so that we can feed it when the AM station is off-air).
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Jan 6, 2016 05:30
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vOv posted:get an anti-exorcism agreed: hail satan
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Jan 6, 2016 05:37
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Munkeymon posted:agreed: hail satan yes op. this will fix your speakers in jiff https://www.youtube.com/watch?v=kmhOTG0rm5Q
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Jan 6, 2016 14:29
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| # ? Jun 8, 2024 19:19 |
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Satellit3 posted:yes op. this will fix your speakers in jiff https://www.youtube.com/watch?v=UbzUTRAUac4
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Jan 6, 2016 20:16
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