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Eclipse DX

The technical side of broadcasting. Think IBOC is a sham? Talk about it here! How about HDTV? Post DX reports here as well.
Marcus
Posts: 200
Joined: Fri Jan 21, 2005 1:08 pm
Location: Sarnia, Ontario

Eclipse DX

Post by Marcus » Mon Aug 21, 2017 4:37 pm

My location was about 75% moon over sun at best, yet I still picked up some DX on AM. Here is what I found.
1020 KDKA Pittsburgh
1170 WWVA Wheeling
1200 WKST New Castle, PA
1580 WJFK Morningside - Washington
1630 WRDW Augusta,GA : ESPN
1640 WSJP Sussex - Milwaukee
1670 WOZN Madison, WI
1690 WVON Berwyn - Chicago

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RingtailedFox
Posts: 442
Joined: Tue Jul 26, 2011 3:11 pm
Location: A raccoon's nest high up in a tree in west Windsor, Ontario
Contact:

Re: Eclipse DX

Post by RingtailedFox » Mon Aug 21, 2017 4:47 pm

moonbounce, or just reduced interference from the blocked solar radiation?
~ The Legendary Raccoon-Fox has spoken!

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mtburb
Posts: 456
Joined: Sun Oct 18, 2015 12:28 pm
Location: Wyandotte

Re: Eclipse DX

Post by mtburb » Mon Aug 21, 2017 5:13 pm

I did notice that WTOL was continuing to show up well during the day, which is not normal.
For three days in January 2017 (15th, 16th, 19th) and one night in September 2017 (22nd), I managed to receive KDKA Pittsburgh from 202 miles away indoors!

My tropo station reception reports: https://www.rabbitears.info/dxlocation.php?id=403

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Turkeytop
Posts: 2892
Joined: Mon Aug 16, 2010 9:27 pm

Re: Eclipse DX

Post by Turkeytop » Mon Aug 21, 2017 6:38 pm

I tuned across the MW band. The only thing out of the ordinary I heard was WWL from Cincinnati.

CHU on 3330 KHZ was pounding in pretty strong, unusual for that time of day. About an hour later, I tuned back to it and it was very weak.

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ZenithCKLW
Posts: 87
Joined: Sat Nov 13, 2004 11:21 am
Location: Livonia, MI

Re: Eclipse DX

Post by ZenithCKLW » Mon Aug 21, 2017 7:07 pm

700 WLW from Cincinnati, or 870 WWL from New Orleans? Both good catches during the day.

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Turkeytop
Posts: 2892
Joined: Mon Aug 16, 2010 9:27 pm

Re: Eclipse DX

Post by Turkeytop » Mon Aug 21, 2017 7:12 pm

ZenithCKLW wrote:
Mon Aug 21, 2017 7:07 pm
700 WLW from Cincinnati, or 870 WWL from New Orleans? Both good catches during the day.

Oops. I meant WLW. :oops:

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SolarMax
Posts: 410
Joined: Sat Dec 04, 2004 5:59 pm
Location: 313

Re: Eclipse DX

Post by SolarMax » Tue Aug 22, 2017 3:14 pm

RingtailedFox wrote:
Mon Aug 21, 2017 4:47 pm
moonbounce, or just reduced interference from the blocked solar radiation?
Moonbounce not ever going to be a thing on the AM band. Just some quick ionospheric layer shuffling for a few minutes.

k8jd
Posts: 312
Joined: Fri Jun 28, 2013 3:35 pm
Location: Commerce, MI

Re: Eclipse DX

Post by k8jd » Tue Aug 22, 2017 8:18 pm

I was hoping to do some quick AM scans but I had a photo setup going and a big pinhole viewing box set up for my wife and mother-in-law to look at the eclipse and never got to a radio.
I expect there would be a change to the D layer while the sun was blocked, allowing the middle distance AM signals to come thru, maybe with a less critical daytime antenna pattern used, and higher daytime power levels, would get more signals here from stations never heard in the daylight ! I would add photo of the partial eclipse but can't figure how to get my image files to go on this page !
Someone mentioned moonbounce on MW AM signal :lol:

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Splouge
Posts: 546
Joined: Mon Sep 07, 2015 2:34 pm
Location: 9 miles from the laziest ever TV station, W33BY, or as they call themselves, WHPR TV

Re: Eclipse DX

Post by Splouge » Wed Aug 23, 2017 12:26 pm

720 WGN (I think) came in at Gibraltar. After the eclipse was over, I managed to get CICO in Melvindale. Which I'm no longer able to get regularly.
One time, I got WYZZ Peoria 330 miles away indoors clearly for 10 minutes on Dec 5, 2015

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rst599
Posts: 84
Joined: Tue Dec 07, 2004 2:20 pm
Location: 30 Meters

Re: Eclipse DX

Post by rst599 » Wed Aug 23, 2017 2:08 pm

The lack of solar energy was expected to cause spot depletion in the D layer, which normally absorbs MF and lower HF frequencies up to about 5 MHz, plus or minus, and reflects signals above that up to about 10 MHz. During the eclipse there were many reports of enhanced (for the time of day) propagation on the amateur 80 and 160 meter bands. There was a radio contest specifically organized to test the effects of the eclipse on the ionosphere, which I participated in. I made contact with a station in southern New Jersey on 160 meters (1820 kHz) which would not normally be workable from here during the day. I also noticed that 40 meters (7 MHz) "went long" (with the lack of absorption, signals could reach the F layer) and I made contact with several stations out west. For the most part, 20 meters (14 MHz) behaved normally, since it's not much affected by the D layer, and F-layer ionization persists longer when the sun goes down.

Unfortunately, I didn't get a chance to see what the effect was on AM broadcast propagation, but from reports in this thread, skywave was pretty good.

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