Stations That Power UP Instead Of Powering Down

[schmave]

I think WHBY 1150 Kimberly is 20000 watts days and 25000 watts nights. WWJ applied for 12 kW day and 50 kW night, but measured the WHAK 960 contours, and they didn't overlap with the new wider lobe WWJ day pattern (5 towers of the 6). They probably also ran radials on their own day signal during the proofs for the 12 kW. Those applications were not complete online. Anyway, they modified the application for 50 kW daytime, and they are 50 kW fulltime now. CHIR/CHYR-7 went from 250 to 500 to 1000 watts night. While it was still on AM before they moved to FM, they were fulltime on 710 with 10000 day and 1000 (700 watts input) watts. They got complaints about it from WLW as I recall, not WOR.

I am sure they did. That would be very noticeable on WLW's signal across much of northern Ohio if they were non-directional.

 

[Laurence Glavin]

During the time period that Air America was heard on WLIB-AM 1190 in New York City, I used to listen to some of its programming at night and pre-sunrise near Boston. The Air America affiliate in Boston was WXKS-AM 1430 which was 5000 watts nondirectional days and an easy pickup all day long. At night, its 1,000-watt was directional towards the Atlantic Ocean. I hope liberal sharks enjoyed it. But since WLIB-AM powered UP at night, it came in fairly well north of Boston. It still comes in in the suburbs even though a station at 1200 moved in with 50K.

 

[Schroedingers Cat]

I am sure they did. That would be very noticeable on WLW's signal across much of northern Ohio if they were non-directional.

Up until very near the end before moving to FM, CHYR operated directionally on 710 with 6 towers at night. It had a very small inverse field in any direction to the south. I guess WLW's concern was the interference in Michigan.

http://transition.fcc.gov/ftp/Bureaus/MB/Databases/AM_DA_patterns/495267-54971.pdf

 

[schmave]

I am sure they did. That would be very noticeable on WLW's signal across much of northern Ohio if they were non-directional.

Up until very near the end before moving to FM, CHYR operated directionally on 710 with 6 towers at night. It had a very small inverse field in any direction to the south. I guess WLW's concern was the interference in Michigan.

http://transition.fcc.gov/ftp/Bureaus/MB/Databases/AM_DA_patterns/495267-54971.pdf

Holy crap, you're not kidding. I assume those towers were pretty close to the lake so basically no Canadian audience was to the south. In that case, not so sure of the reasoning.

 

[jd]

I assume those towers were pretty close to the lake so basically no Canadian audience was to the south.

You're exactly right about that. Here's the location of the site, now home to the lone tower of CHYR-FM (switch to satellite view and zoom in):

http://www.fccinfo.com/MapIt5.php?l...>Leamington,+ON&city=Leamington&Button=Map+It

 

[Schroedingers Cat]

CHYR's towers were just north of the parts of Canada which are actually further south geographically than parts of California. The 42nd parallel of latitude, to be specific. Point Pelee and Pelee Island are to the south. The same parallel is the border between California and Oregon.

CHYR 96.7 moved closer to Windsor, but CJSP 92.7 is on the tower that remains near Point Pelee. CJSP was the original call of CHYR on 710.

Under treaty, CHYR 710 did not have to protect WOR in Canada or over Lake Erie or Lake Ontario, and first adjacents like WLW 700 and WGN 720 are not addressed other than the day groundwave 0.5 mV/m to 0.5 mV/m overlap restriction.

A well known aficionado in Michigan is reported to have been behind the WLW complaints, but I don't think they had any treaty basis for objection.

 

[dave73]

Isn't the Chicago 950 1k day/5k night?

Yes it is; call letters are WNTD. I didn't realize that it has been that way for a long time, over 30 years, in fact.

In the case of WNTD, they not only broadcast at 1kw day & 5kw night, they also broadcast from different sites for day & night as well. For their daytime site, they're 1kw ND from the Midland building at 15th Street & Western Avenue in Chicago. Their nighttime site is located in Burnham, IL, & they're directional mostly to the north & south at 5kw on 6 towers. While some areas are Grade B during the day, some Grade B areas are Grade A at night. I know for Gary, IN, WNTD comes in better at night than during the day, because the nighttime pattern aims more of the southern signal toward Indiana, while the daytime pattern is ND, but weaker toward Indiana.

This is the link to WNTD's daytime site via google maps.

This is the link to WNTD's nighttime site via google maps.

 

[Buckeyes2001]

WCNS/Latrobe, PA on 1480 doubles power from 500W daytime to 1kW nighttime, though directional mainly to the north at night. I just caught this station at about 7:15pm EST in Vermilion, OH. Not sure if they switch exactly at sunset or not.

 

[crainbebo]

Gosh, I completely forgot this topic.

KRDU 1130 Dinuba, CA is 5000w daytime, but at night rises 1300w to 6300w. It is a Christian station.

-crainbebo

 

[gar hi]

I have one where I live---WZAB "880 the Biz" Sweetwater, 4k day/5k night per Radio-Locator. I still can hardly hear it at night.

Interesting.

WZAB often booms in here in Tampa during critical hours around sunset and during the peak of the summer, they are often heard at night stronger than WCBS.

 

[N4GBK]

WMFD Wilmington, NC 630 powers up at night to1kW. Or more likely they power down days to 800 watts.

 

[Bob1370]

WWJ is no longer using higher night power...its current antenna farm in the down-river area south of Detroit allows a full 50 kW 24/7, DA-2.