[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)
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