While wandering through the Upper Midwest.
Tue Feb 21 20:44:54 EST 2012
If CKUA is still using its three-tower site (two towers days, all
three at night), it is getting all of that coverage with 60-degree
towers (a little more than 280' = 60 degrees at 580)! With that soil
conductivity, you don't need half-wave towers to get out like
gangbusters. CBK uses a 90-degree tower. Of course, the tower has to
be a little taller than 450' to be 90 degrees at 540. A 1000' tower
would be almost exactly 200 degrees at 540. It would produce a field
equivalent to 80 kW from a 90-degree tower, so the signal improvement
would be noticeable. Can't do it now, though; too many co-channel
stations would be hurt, including a Class A in Mexico.
Dan Strassberg (firstname.lastname@example.org)
----- Original Message -----
To: "Dan.Strassberg" <email@example.com>
Cc: "Kevin Vahey" <firstname.lastname@example.org>; "Scott Fybush"
Sent: Tuesday, February 21, 2012 4:54 PM
Subject: Re: While wandering through the Upper Midwest.
>> Years ago, when my late wife and I traveled out that way, my
>> station was CKUA 580 in Edmonton (or is it Edmondton?). CKUA is
>> gone from AM now but it was owned by the University of Alberta and
>> only 10 kW (by day--not sure about nights; it would have had to
>> protect KMJ, WIBW, and WKTY).
> Actually, it still exists on AM! 50,000 watts these days, at least
> daytime. The CKUA network went through a bunch of financial troubles
> the mid-1990s and is now in the hands of a private foundation. It
> seems to
> be doing OK lately.
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