Seems odd that 760 could be possibly be authorized to operate ND with 5 kW at night as that would theoretically cause interference to WJR. Back in the day before they were authorized night directional power with 50 kW, their night power of 5 kW was directional with the main null aimed at Detroit. For quite some time now KGB's night time signal up here in the West SFV has been barely audible. I presume that if they have been operating non directional at night, their power is in the neighbourhood of probably just a couple of hundred Watts.
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KOGO 600 No Longer Just 5,000 Watts
- Thread starter Gregg.
- Start date
How often does AM DX cross the Rockies though? And would it even have a chance? 5kW vs 50,000?
Yes, absolutely.
Years ago KCBQ 1170 San Diego after decades of using 5 kW directional at night was required to reduce their power night power to 700 Watts or so because of complaints from KVOO Tulsa (now KOTV). Now from their new site KCBQ runs 2.9 kW directional at night.
For years KACY (now KVEN) 1520 Port Hueneme (Oxnard) wanted to increase their night power to 5 kW DA from 1 kW DA. FCC said nope, there would be interference to KOMA (now KOKC) Oklahoma City.
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Skywave. Every single night.
Good point!
Under STA operation, there's a presumption that a station can run up to 25% of its licensed DA power when in ND mode.
If WJR experiences actual interference, it's allowed to complain to the FCC and KGB would have to reduce power as far as needed to make the interference stop.
If WJR experiences actual interference, it's allowed to complain to the FCC and KGB would have to reduce power as far as needed to make the interference stop.
Wonder if someone has an aircheck from Alaska with Wolfman Jack back when the station was XERB?The Best "San Diego area " signal was XEPRS.. before they lost a tower.
I can't find the audio I sent it for a reception report but heres another
And what I sent in for my report was even way better than that one.XEPRS-AM 1090 Tijuana, BC, Mex Fri Dec 31, 2021 928pm AK Time.mp3
drive.google.com
It would pound in like this, nghtly.. all alone.. 2800 miles away or so.
Until it lost a tower then Seattle and it would mix.
Standing in the middle of the main road in McGrath, AK with my Mightier 1090 mouse pad
View attachment 12251
Youre a ham and you wonder that?
I have had far less then 5kw from opposite sides of the rockies make it to me radio, from far away
I've never gotten anything from across the Rockies before. And we're talking AM broadcast because I have no HF capabilities in my HOA. I suppose I might if I had better equipment.
im right on the eastern edge of the rockies.. ive heard ams from tijuana, san diego, tuscon, mexicali, vegas, from all over california and beyond on poitns west..... nightly
And here in California, KOA in Denver is an easy catch.
I've heard one AM with as little as 1 watt over the rockies.
XEABCA 820 Mexicali was a regular with 5kw right after sunrise here in WY.
As to AMs from the West being listenable in the East, think about what DXers could hear clearly before every channel had 24/7 stations. From Cleveland, I regularly heard stations like KPRO 1kw on 1440 from Riverside. Or a half dozen 500 watt day timers doing testing after midnight. Or KTIP, Porterville, 250 watts on a “graveyard” channel.
I dunno then. Probably a mixture of indoor antenna, stucco housing and an urban environment is the issue. I'll have to try harder to identify stations.
I do know the noise level is a lot higher than it was. In the 90s I didn't need more than a whip antenna and shortwave was teaming. Now WWV is unreliable and even 9330 was there but weak and we all know they ran serious power.
And here in SoCal if you null out KLAC 570 just right you'll hear KVI Seattle and they're only ND 5 kW. Yes skywave is alive and well!
K.M. Richards
Program Director, The Eighties Channel™
Tomás, you really should look these things up before you post. David's site has all the Broadcasting issues available for searching (which is where I doublecheck my information).
Since KACY is one of the stations in my resumé, I can say definitively that there was never a 5kW application. They did get an upgrade to 50kW about a decade before I was there, but with a pattern that pushed most of it out over the Pacific to protect KOMA. (We did have listeners in Hawaii during our day power and pattern.)
We actually had two separate transmitters ... a RCA Ampliphase for days and an old Collins for nights. It literally was a two-person job to switch back and forth: One would be in the 50kW room and power down the RCA, then switch patterns, at which point the second person would fire up the Collins. I was that second person most nights during my time there, as I was officially on the KACY-FM staff and only occasionally pulled an all-night shift on the AM when they were short-handed.
KACY got a 10kW daytime/1kW nighttime authorization in 1961; before that it was 250w. As I said, that was the first increase applied for since they went on the air in 1958. The 50kW authorization came in 1968. It downgraded to 10kW in 1991 or 1992 (if I remember correctly; I checked the other dates in Broadcasting, but couldn't find the authorization for the reduction, only that it was 10kW days when it was sold in 1993) when the calls were KTRO, because then-owner Hal Frank was tired of paying the electric bill for the Ampliphase.
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