[BC] AM IBOC In The Dallas / Fort Worth Market

[PeterH5322]

>Give me the ground conductivity of the San Francisco Bay Area. 30! It seems 
>it would take more than 50Kw here in the South to do what a 5Kw plant does 
>there.

The AMs in S.F. are under-engineered.

Neither Class A has a conforming radiator, although both have a salt 
water ground.

The lowest frequency Class A didn't install a vertical radiator until 
1949.

The highest frequency Class A didn't install a vertical radiator until 
1941.

One "legacy" Class B is still operating 5/1 ND-U, seventy years after the 
technology was available to upgrade to 5 DA-N. And, back then there were 
no co-channel stations in the western U.S. Now there are many.

The lowest frequency Class B didn't upgrade from 5/1 ND-U to 5 DA-N until 
fifty years after the technology available there to do so.

The second lowest frequency Class B has a conforming radiator only 
because its site owner (it is a tenant) installed a 225 degree radiator 
many moons ago. This Class B is operating into a ground system which is 
sized for one of the highest Class C frequencies.

And so on.