[BC] Coastal 1A's

[PeterH5322@aol.com]

In a message dated 11/20/05 10:57:53 AM, bbrister at sbcglobal.net writes:


> The rest use non-directional antennas. It seems that stations like KFI and
> KNX in Los Angeles put half of their signals into the Pacific Ocean. The
> 1A's in New York City would have a little bigger challenge covering New
> England and the East Coast but I would think that could be overcome rather
> easily.
> 

WNBC operated a DA-1 before its move to City Island (or whatever its called).

KNX operated a DA-D for a while, using its former auxiliary tower (since 
removes) as the second element in the array. This experiment was not successful, 
possibly because the taller tower should point towards the minima, not towards 
the maxima, and in KNX's case the taller tower pointed towards the maxima.

KFI is a Class I-A (shared with a Maritime Class I-B which is grandfathered 
at 10 kW ND-U) and KNX was a de-facto Class I-A on 1050, now a Class I-B 
in-fact on 1070 (shared with another Maritime Class I-B, this one being 50 kW ND-U).

Good designs for coastal Class A DAs with targeted communities north and 
south of the Tx site can be seen in KGO's (three towers, symmetric in-line, 
end-fire, non-conforming, DA-1); KOMO's (three towers, slightly asymmetric, 
end-fire, DA-N); XEPRS' (three towers, symmetric, side-fire, DA-N); and KFBK's (two 
towers, symmetric, end-fire, Franklins, DA-2).