[BC] FCC query re AM
Dana Puopolo
dpuopolo at usa.net
Thu Nov 11 12:38:26 CST 2010
PSSA and PSRA are in parallel to any secondary nighttime operation.
Here at WURD, we have 1 kW Day, 105 watts Night, DA-2. The daytime's lobe goes
right over downtown-it's roughly the same as 5 kW non-D. The night time is
considered a secondary operation, because it's less that 250 watts. It puts a
dimple over downtown Philly, so the actual ERP over downtown is about 60
watts.
WURD also has a 124 watt Pre-sunrise authority (granted in 1970) that I plan
to soon begin using again. It allows 124 watts into the day DA, which means
that it's almost 600 watts ERP towards downtown-a lot better then 60 watts.
Of course the ones calculated back in 2007 show gave them NO pre-sunrise.
Basically, if you have an authorization you can use it-and it's your choice as
to which one you use.
Oh-IIRC they also have a 1 watt post sunset. Not going to bother with this
one.
-D
From: Tom Spencer <Radiofreetom at gmail.com>
In perusing various stations' licenses, I've run across a puzzler...
Class D AM; listed as licensed to use some power (typically 100 - 150
watts) sunset to sunrise; unlimited-time operation, with a higher day
power (of course);
Here's the kicker - most of the Class D AMs I've looked at ALSO have
PSSAs and PSRAs with some other power specified.
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