[BC] Can traditional AM and IBOC co-exist?

[cldube]

>Thus I was thinking in terms of cost and eliminating tower lights on a new
> structure.

That's what I would have imagined, although I would suspect that their AM 
consultants might have mentioned the skywave aspect of a short radiator to 
the owners. But one never knows. Of course- some might find that idea 
attractive if they have nighttime authorization LOL!

Thanks for the reply.

Chuck

----- Original Message ----- 
From: "Phil Alexander" <dynotherm at earthlink.net>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Sent: Monday, July 11, 2005 12:19 PM
Subject: Re: [BC] Can traditional AM and IBOC co-exist?


> On 11 Jul 2005 at 11:02, Chuck Dube wrote:
>
>> Hi Phil-
>>
>> Interesting discussion. Why is it that x-banders also tend to work with
>> shorter
>> towers? One would think that given the wavelength, they'd want to utilize
>> the benefit of a shorter structure inherently. Call me naive- I'm very
>> curious!
>
> OK, the ones I'm familiar with are short, but the sample is too small. <g>
>
> Open mouth insert foot. Looking over the list of stations in the X-band,
> there are some electrically tall towers there. In fact, there are quite
> a few that are too tall. This is probably a function of using an existing
> 90 or 112 degree tower from the old frequency. If a Class D on an old
> Class II is moving up from below 900 kHz and they use their existing 
> tower,
> that would put them up around 160 - 175 degrees. However, if they want to
> eliminate lighting, they will be around 120 deg or less. The capital cost
> conscious building new towers are probably the ones using 85 - 120 
> degrees.
>
> Interesting. I hadn't considered what would happen to a low end station
> moving to X-band with the existing tower. It appears some of them have 
> done
> that. Many of the old towers are 40 - 60 years old and far from current 
> code.
> Thus I was thinking in terms of cost and eliminating tower lights on a new
> structure.
>
>
> Phil Alexander, CSRE, AMD
> Broadcast Engineering Services and Technology
> (a Div. of Advanced Parts Corporation)
> Ph. (317) 335-2065   FAX (317) 335-9037
>
>
>
>
>