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Author Topic: AM Frequency of The Week: 710  (Read 3895 times)
radioman148
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Re: AM Frequency of The Week: 710
« Reply #50 on: September 15, 2010, 03:35:57 AM »

I did my drive up 101 from Encino to San Jose.  Actually split it up, got out of Encino at 4pm yesterda, spent the night in Santa Maria, then finished the rest of the drive this morning.

I didn't find a convergence zone on 710. I had KSPN (Los Angeles) for a little less than the first half the drive.  By the time I got to Santa Maria, it was 7pm and skip from the east was rolling in, but still no station was on top of 710. I would have expected KIRO to blow out both California stations, but not at that point of the early evening. 

The following morning I got in the car at 7:30am, and the channel was effectively blank.  KFIA is apparently too directional for there to be a convergence zone. 

Unlike 740, where KBRT and KCBS battle it out for a little while north of Solvang.  BTW, the strongest SF station for the first part of my drive this morning (from Santa Maria) was KGO.  Obviously they were aimed right at me, but I would have guessed KNBR.

KGO has a gangbuster "north south" signal. I've heard them from Alaska down to Acapulco. However, their "east west" null is very effective. I have never heard KGO in Hawaii on any of my several trips out there.
I'd be curious to know how far to the east they can be heard. Has anyone had any success hearing KGO in Utah or Colorado perhaps?
« Last Edit: September 15, 2010, 03:39:26 AM by radioman148 » Logged
DavidEduardo
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Re: AM Frequency of The Week: 710
« Reply #51 on: September 15, 2010, 04:43:13 PM »

I'd be curious to know how far to the east they can be heard. Has anyone had any success hearing KGO in Utah or Colorado perhaps?

How about Ohio?

http://www.davidgleason.com/Archive%20Cleveland/California%20Verification%20Optimized.pdf

... and skip down to page 55 of the PDF.
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radioman148
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Re: AM Frequency of The Week: 710
« Reply #52 on: September 15, 2010, 05:57:48 PM »

I'd be curious to know how far to the east they can be heard. Has anyone had any success hearing KGO in Utah or Colorado perhaps?

How about Ohio?

http://www.davidgleason.com/Archive%20Cleveland/California%20Verification%20Optimized.pdf

... and skip down to page 55 of the PDF.

Very impressive, but in 1961 the frequencies were alot more vacant. I assume WGY must have been off. I wonder how far east KGO can be heard these days at night?
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KR4BD
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Re: AM Frequency of The Week: 710
« Reply #53 on: September 15, 2010, 07:50:39 PM »

In February 1980, while vacationing in Hawaii, I heard KGO on the East Coast of Kauai (just north of Kapaa) on a car radio parked in a park with a clear ocean view to the Northeast.  This happened just after Hawaiian sunset.  It was not strong, but it was KGO.  Many other stations were also heard including the now defunct KBAI-1150 from Morro Bay, CA. 
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gar fla
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Re: AM Frequency of The Week: 710
« Reply #54 on: September 15, 2010, 10:03:42 PM »

Nulls in signal pattern maps aren't always what they seem just by looking at them.

WWKB 1520 from Buffalo is a good example. You'd think they couldn't be heard at all in the midwest or Florida at night but I know some here have picked them up in the midwest and I've actually heard them here in Florida.
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radioman148
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Re: AM Frequency of The Week: 710
« Reply #55 on: September 15, 2010, 11:14:22 PM »

In February 1980, while vacationing in Hawaii, I heard KGO on the East Coast of Kauai (just north of Kapaa) on a car radio parked in a park with a clear ocean view to the Northeast.  This happened just after Hawaiian sunset.  It was not strong, but it was KGO.  Many other stations were also heard including the now defunct KBAI-1150 from Morro Bay, CA. 

I've never picked up KGO in Hawaii, but I have heard KCBS there, although weak.
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cyberdad
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Re: AM Frequency of The Week: 710
« Reply #56 on: September 15, 2010, 11:52:32 PM »

Nulls in signal pattern maps aren't always what they seem just by looking at them.

WWKB 1520 from Buffalo is a good example. You'd think they couldn't be heard at all in the midwest or Florida at night but I know some here have picked them up in the midwest and I've actually heard them here in Florida.

Totally agree.  As WKBW, I used to hear it nightly during my college days in the late '60s under KOMA.  Supposedly they have the same pattern now as then, but if you look at Radio Locator's map, they'd appear to be sending almost no juice to the west-southwest.

As for KGO...  It's been 16 years, but I thought I remembered hearing it one night in Maui, although David responded to my post on another thread here with a comment about the null, so I just assumed my memory was faulty.  Now, I'm thinking maybe I was remembering correctly after all.

(Sidebar comment for David....  Do you work in that Univision complex north of LAX off the 405?  I drove by there Monday, as I do just about every time I'm in So Cal.  I'm usually heading from LAX or Orange County up the hill for customer meetings in Encino and/or Van Nuys.  I also sometimes stay at the Marriott Courtyard across the road and a half-mile or so north.  I said "drove by".  That was the case Monday, but usually it's "crawl by"!)
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schmave
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Re: AM Frequency of The Week: 710
« Reply #57 on: September 16, 2010, 12:10:49 AM »

Nulls in signal pattern maps aren't always what they seem just by looking at them.

WWKB 1520 from Buffalo is a good example. You'd think they couldn't be heard at all in the midwest or Florida at night but I know some here have picked them up in the midwest and I've actually heard them here in Florida.

Totally agree.  As WKBW, I used to hear it nightly during my college days in the late '60s under KOMA.  Supposedly they have the same pattern now as then, but if you look at Radio Locator's map, they'd appear to be sending almost no juice to the west-southwest.

As for KGO...  It's been 16 years, but I thought I remembered hearing it one night in Maui, although David responded to my post on another thread here with a comment about the null, so I just assumed my memory was faulty.  Now, I'm thinking maybe I was remembering correctly after all.

(Sidebar comment for David....  Do you work in that Univision complex north of LAX off the 405?  I drove by there Monday, as I do just about every time I'm in So Cal.  I'm usually heading from LAX or Orange County up the hill for customer meetings in Encino and/or Van Nuys.  I also sometimes stay at the Marriott Courtyard across the road and a half-mile or so north.  I said "drove by".  That was the case Monday, but usually it's "crawl by"!)

I heard WKBW very well here in Ohio just about three hours ago.
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gar fla
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Re: AM Frequency of The Week: 710
« Reply #58 on: September 16, 2010, 09:22:01 AM »

The old WKBW, "KB Radio", was the first station I ever DXed and that's what really got me interested in DXing when I was 10 years old.

That was when I lived up north and WKBW would often seem as strong as the local WFIL. I was right in the direction of WKBW's signal.

Wnen it would fade away in the morning, I always looked forward to hearing it again in the late afternoon.

And yes, today's WWKB still has the same old signal pattern.
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radioman148
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Re: AM Frequency of The Week: 710
« Reply #59 on: September 16, 2010, 10:03:52 AM »

Nulls in signal pattern maps aren't always what they seem just by looking at them.

WWKB 1520 from Buffalo is a good example. You'd think they couldn't be heard at all in the midwest or Florida at night but I know some here have picked them up in the midwest and I've actually heard them here in Florida.

Actually I would think they could be heard in Florida since they do send a decent amount of signal that way. I don't know what the interference level is on 1520 down there now.
I do know way back in the late 50s that Dick Biondi stated that his show on then "WKBW" could be heard in Guantanamo.
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