[BC] DA Systems 12 - 14 - 21 towers

[DHultsman5 at aol.com]

In a message dated 10/31/2007 6:12:04 AM Central Daylight Time, 
curt at spam-o-matic.net writes:

> Was that a 21 tower array, or between the three sites 21 towers ?
> > >The 1500 at one time, if memory serves, was 21 but from multiple sites.
> > 
> 

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As I recall at the time KLIF  was constructed it was the first 12 tower used 
as one pattern.  I believe the Storer station in Detriot had 12 tower but used 
them in combinations between day and night but not all 12 in one pattern.  

I was told by our consultants that there was an application filed for a 14 
tower array somewhere in the west.  I am unaware if this site as constructed.

I doubt if any large array would be constructed as a new site today due to 
land acquisition, zoning (NIMBY) and resulting service, with the exception of 
major markets.

  However Clear Channel has been doing some very impressive DA combinations. 
The combining of the 540 Khz and 740 kHz. 50 kW sites in Orlando and the three 
stations in Boston, MA.

While I was in Boston last month I visited John Warner, Clear Channel VP/ AM 
Systems, at the 7 tower site with the triplex of the three DA-2 stations.  
Very impressive installation and design.   See a photo of the Kintronics Phasor 
in Radio Guide in the Kintronics ad.  The Common point filter is on top of one 
of the three phasor cabinets.

These combinations are being done by stations out of necessity, Age of the 
system,  economys of scale by combining sites and selling off excessive real 
estate. 

Dave Hultsman
On the road in Jackson, MS


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