[BC] KDK

[Dana Puopolo]

When I lived in PGH in the mid 1970's, one of the people I knew there owned a
small share of ZDK in Antigua. At the time they were operating on 1100 with 10
kW non-d full time.  He wanted me to look at a possibly better frequency for
them. I chose 1060 because I believed it would do better in Florida and the
Gulf coast area then 1100.  To my knowledge they never implimented it, but I
think it would have worked fine for them. They wanted a minimum of 25 kW.  

-D

 

------ Original Message ------
Received: Sun, 07 Oct 2007 01:41:11 AM EDT
From: PeterH5322 <peterh5322 at rattlebrain.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Subject: Re: [BC] KRFT Desoto, MO Night Power Increase


>> Ought to get into Miami well enough.  You are talking about ZNS 1540?
>> Right?
>
>Wrong...it's blocked by a first-adjacent, assuming WRHC is operating on 
>1550 (instead of 1560, where it was camped out for years until WQEW got 
>it moved back where it belongs...)

Although ZNS-1 is a Class I-A by NARBA, it was operating at 10 kW ND-U 
until "Rio" forced all Class I-As to operate with 50 kW, or whatever 
higher power they were notified at.

This forced ZNS-1 and CBU to go to 50 kW DA-1.

ZNS-1 protects Albany and Waterloo at night.

Coincidentally with WCKY moving from its failed 3-tower array to its 
present 4-tower array, protection to first-adjacents on 1520 and 1540 
became necessary.

Waterloo was apparently designed to protect not only ZNS-1 (Waterloo is a 
Class I-B, so it is inferior in class to ZNS-1) but a planned-for Class 
I-B in the Southwest, which was never built. Probably intended for 
Phoenix (which state has no Class Is at all) or Los Angeles.

Los Angeles installed a Class II-B on 1540 with 50/10 DA-2, but did not 
provide protection for first-adjacent KFBK, possibly in anticipation of 
being elevated to Class I-B.

When Rose Hills recently redesigned the array for higher night power, the 
array was redesigned to provide first-adjacent protection to Sacto. Also 
to a second-adjacent which wasn't being adequately protected in the first 
place.

Incidentally, "Rio" also affected one Class II-B in a strange way. One in 
Mexico was notified as 100/50 kW ND-U for the better part of a 
half-century, but Class Bs are not allowed more than 50 kW at any time, 
so this station is now 50 kW ND-U on a foreign Class I-A clear.

It's the only instance I know of where "Rio" forced a station to reduce 
its day power.

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