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Old December 19th 09, 05:16 PM posted to rec.radio.shortwave
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Default Question about AM and critical hours, does snow count?

On Dec 19, 6:22*am, dave wrote:


When I was a kid, KYND Tempe, 1580, was 50 KW ND from 10 AM to 3 PM,
from Sunrise to 10 A and from 3P to Sunset they were 10 KW. *This would
have been 1964.

Buck Owens owned the station for a while. *Dick Gilbert put it on the air.


Owens bought it in 1967 and sold it in 1998, so he had it for 31
years, and I believe it had calls includeing KCWW, KNIX, KTUF and was
for some time the originating station for the classic country
satellite net that Owens had.

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Old December 20th 09, 06:21 AM posted to rec.radio.shortwave
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Default Question about AM and critical hours, does snow count?

On Dec 19, 6:17*am, dave wrote:
Gregg wrote:

I knew about the period before and after sunrise - but I hadn't heard
of that term
"Critical Hours" before.


It's usually to protect a station to the East.


Didn't know that either David. Can you tell me why specifically only
stations to the east? :-)
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Old December 20th 09, 06:39 AM posted to rec.radio.shortwave
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Default Question about AM and critical hours, does snow count?

On Dec 19, 4:46*pm, "Brenda Ann"
wrote:
"dave" wrote in message

.. .

wrote:
I think snow doesn't have any effect on AM transmitting.Too much ice
buildup though can, and sometimes does pull down towers and wires.
cuhulin


Doesn't affect actual transmission from the tower site, but it sure affects
groundwave coverage. During a snowstorm back in about 1995, I could listen,
on my pocket transistor radio, to 620 KGW, 1080 KWJJ and 1190 KEX from
Portland, OR from my home in Lewiston, ID (about 370 miles). This was in the
late morning hours, BTW. *No skip. *The storm was extant the entire
distance.


OK, then it does or can aid into your DXing.

I never really knew if the snow itself did, I always had the belief it
did in some
ways, if for anything else but to allow a more distant signal to be
heard more
clearly for lack of any static or hiss. That's the way it was last
night when I copied
the station in Long Island, it was as clear as hearing something here
local, not the signal
strength itself but understanding what I was hearing.

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Old December 20th 09, 11:08 AM posted to rec.radio.shortwave
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Default Question about AM and critical hours, does snow count?


"Gregg" wrote in message
...
On Dec 19, 6:17 am, dave wrote:
Gregg wrote:

I knew about the period before and after sunrise - but I hadn't heard
of that term
"Critical Hours" before.


It's usually to protect a station to the East.


Didn't know that either David. Can you tell me why specifically only
stations to the east? :-)

I would think this would be because of gray line skip. Points east will have
already begun receiving skip by the time a station considerably to the west
will have seen sunset.





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Old December 20th 09, 01:02 PM posted to rec.radio.shortwave
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Default Question about AM and critical hours, does snow count?

On Dec 20, 3:08*am, "Brenda Ann"
wrote:
"Gregg" wrote in message

...
On Dec 19, 6:17 am, dave wrote:

Gregg wrote:


I knew about the period before and after sunrise - but I hadn't heard
of that term
"Critical Hours" before.


It's usually to protect a station to the East.


Didn't know that either David. Can you tell me why specifically only
stations to the east? :-)

I would think this would be because of gray line skip. Points east will have
already begun receiving skip by the time a station considerably to the west
will have seen sunset.


Ah. I see. I should have figured that out on my own. Thanks BA

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