[BC] X-Banders - Was: Can traditional AM and IBOC co-exist?

PeterH5322@aol.com PeterH5322
Tue Jul 12 10:59:26 CDT 2005


>According to Bob Carpenter's program/FCC data, KKGM has a CP for 10 kW omni 
>from a new site using a 164 degree tower, for which the field at 1 km is 
>shown as 1,143 mV/m.  That would convert to ~361 mV/m at 1 km for 1 kW.
>
>If an FCC limit of ~282 mV/m for 1 kW at 1 km exists for X-banders with 
>towers of any electrical height--what do you think explains this?

Situational ethics.

I know of:

1) Class Cs with 440 mV/m/kW at 1 km radiators and are less than 1 kW 
days, but are a full kilowatt at night.

2) Class Cs with 440 mV/m/kW at 1 km radiators and a full kilowatt days, 
but are less than 1 kW at night.

3) Class Cs with 440 mV/m/kW at 1 km radiators and are a full kilowatt 
days, and are a full kilowatt at night.

4) X-banders which have 10 kW, days into 440 mV/m/kW at 1 km radiators, 
but are limited to 281 mV/m at 1 km nights, so they are really 24.5 kW 
days and 1 kW nights.

(In the last case, the metro has 13 million persons, and the ground 
conductivity is good, at least 8 mS, so 25/1 is not a bad signal, 
although 225 degrees is not so good for fading)


More information about the Broadcast mailing list