Some registered account users are experiencing password recognition issues. The issue appears to have been triggered by a PHP update last night. If this is occurring, please try logging in and using the "forgot password?" utility. Bear in mind auto-generated password reset emails may appear in your spam folder. If this does not work, please click the "Contact Us" option near the lower right hand corner of the index page to contact me via email.

Thank you for your patience!
- M.W.

History of WLW

The technical side of broadcasting. Think IBOC is a sham? Talk about it here! How about HDTV? Post DX reports here as well.
Post Reply
User avatar
Turkeytop
Posts: 9303
Joined: Mon Aug 16, 2010 9:27 pm

History of WLW

Unread post by Turkeytop »

Someone sent me this video about WLW. Some of you might find it interesting,

https://youtu.be/y1u0bHx83Vw
User avatar
Ben Zonia
Posts: 2464
Joined: Sat Jun 03, 2006 10:35 pm
Location: Honor

Re: History of WLW

Unread post by Ben Zonia »

WLW had to go to 500000 watts directional to protect CFRB, then on 690, in Toronto, in WLW's short lived "Superpower" experiment, after complaints from the operators of CFRB.

Image
"I had a job for a while as an announcer at WWV but I finally quit, because I couldn't stand the hours."

-Author Unknown
k8jd
Posts: 626
Joined: Fri Jun 28, 2013 3:35 pm
Location: Commerce, MI

Re: History of WLW

Unread post by k8jd »

how many towers did that pattern need ??
User avatar
Turkeytop
Posts: 9303
Joined: Mon Aug 16, 2010 9:27 pm

Re: History of WLW

Unread post by Turkeytop »

At 50 KW, WLW pounds in every night in Ontario and here in Florida too.
User avatar
Ben Zonia
Posts: 2464
Joined: Sat Jun 03, 2006 10:35 pm
Location: Honor

Re: History of WLW

Unread post by Ben Zonia »

k8jd wrote: Sat Jan 06, 2024 3:12 pm how many towers did that pattern need ??
I haven't found a description of the DA yet, but it is a strange looking pattern. Maybe two electrically far spaced towers, and a third drop wire element suspended in between? Pattern almost looks physically impossible, without a large number of towers, like an FM BC DA pattern envelope vs. actual measured would.

My first guess by designing it conventionally would require at least six towers in a line, three sets of two near cardioid two towers, spaced about one half wavelength and one wavelength apart, about 450 degrees between the furthest towers from each other. I doubt that the real array was anywhere near that complex. Look at the WAAM 1600 Day tower arrangement, and two more towers beyond, for my starting model. Oriented to the SSW rather than 351 degrees true.

https://www.fccinfo.com/CMDProEngine.ph ... 5&sHours=D

Possible structural design, from early WOR DA. Also includes actual WLW DA array, apparently an isosceles triangle arrangement, explaining the symmetrical pattern without more towers.

https://www.google.com/url?sa=i&url=htt ... AdAAAAABAI

So I guess three in a long electrical wavelength isosceles triangle is the actual answer.
"I had a job for a while as an announcer at WWV but I finally quit, because I couldn't stand the hours."

-Author Unknown
k8jd
Posts: 626
Joined: Fri Jun 28, 2013 3:35 pm
Location: Commerce, MI

Re: History of WLW

Unread post by k8jd »

GREAT EVALUATION OF POSSIBLE DESIGNS. Sometimes the cost of many towers colors the final designs. Like the WXYZ AM antenna in Southfield.using two towers to do what three usually did. :shock: :D
User avatar
Ben Zonia
Posts: 2464
Joined: Sat Jun 03, 2006 10:35 pm
Location: Honor

Re: History of WLW

Unread post by Ben Zonia »

WLW History Card.

Just the administrative record, but it chronicles the difficulties WLW had trying to be 500 kW, not the least of which is going directional to protect CFRB 690. Then the Canadian government made CFRB give up 690 Class I-A for a much reduced 1010, supposedly Class I-B. Then they moved 690 to Montreal for the French service. Now they have an English Sports format on 690 in Montreal. They should have allowed CFRX to use a lot more power on 6070 to make up for the lost service area of CFRB.

https://licensing.fcc.gov/cgi-bin/prod/ ... r_id=81965
"I had a job for a while as an announcer at WWV but I finally quit, because I couldn't stand the hours."

-Author Unknown
Post Reply