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Fybush: Langer gets WMSX, boosts WSRO signal

raccoonradio said:
details at http://www.fybush.com The WSRO 650 signal goes to a directional 1.5 kW in a couple wks
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WSRO will go directional on the 28th, but will it also go to 1.5 kW-D at that time? Don't know. Very often (but I don't think always), the FCC requires AMs that go directional or modify their DAs to first operate at 1/4 of their CP power until a license to cover is granted. (1/4 of the CP power produces a field that is everywhere just half of that specified in the CP.) Until recently, getting a license to cover a directional AM required fairly extensive proof-of-performance measurements.

For the last year or so, however, directional AMs have been allowed to apply instead for an MoM (Method of Moments) proof, which relies more heavily on calculations than on actual measurements. So, when WSRO first goes on with its DA, it may--or may not--be running at 375W, not 1.5 kW.

Also, based on its ND operation, WSRO should, at some point, be allowed to operate from Framingham sunset to Nashville sunset at higher night power than the 60W specified in its CP. (The ND night power was 9W.) The 60W-DA will protect WSM's 0.5 mV/m 50% skywave contour, but until Nashville sunset, only WSM's 0.1 mV/m grounndwave contour requires protection. (Or is it the 0.5 mV/m groundwave contour?). I believe that, from Framingham sunset to Nashville sunset, WSRO has been allowed to operate with something like 50% of its licensed daytime power. If that's correct, WSRO should eventually be allowed to operate at 500W for an hour or so after local sunset. Not sure what the post-sunset power will be but, for certain, with the ND operation, it has been significantly greater than the night power.
 
WSRO has been running 250 watts until Nashville sunset all along. They drop to the 9 watts one hour after local sunset.
 
LA_Guy said:
WSRO has been running 250 watts until Nashville sunset all along. They drop to the 9 watts one hour after local sunset.
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All well and good when the day power is 500W or less, Dana, but I don't think WSRO will be allowed to run 1500W DA until Nashville sunset, The operation for that hour after local sunset is governed by a PSSA... right? Unless the PSSA rules have changed, the maximum PSSA power is 500W. Back when WBIX (it had the WMEX calls at the time) was running 40 kW-D/22 kW-CH DA-D and CH using different patterns for D and CH from Mt Wayte Ave and was signing off at Philadelphia sunset, I was told that it was running 500W with the CH pattern for the 15 minutes between Natick sunset abnd Philadelphia sunset. If the power were limited to just protect KYW's protected groundwave contour, I think the power for those 15 min could have been a lot higher than 500W, but the PSSA limitation capped the power at 500W.
 
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