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106.1 In Worcester

D

DavidZ

Star Participant
Radio-locator lists 2 stations at 106.1 in Worcester. One is W230AO (WORC) (CP) and the other is WSRG (LPFM). On one of the links for WORC, it lists AM1310 & 106.1 for Mega Worcester. Other sites do not list the FM. However when I was listening yesterday the AM & FM was running different programming.

When I looked up WSRG it comes up as Radio Metabel at 106.1 FM & 1700AM. Radio-locator has no station listed for AM 1700 in Worcester but there was what I believed to be a Spanish language religious station on the AM when I listened yesterday afternoon.

Does anyone know what’s up with this?

http://radio-locator.com/cgi-bin/locate?select=city&city=Worcester&state=MA
 
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So how does Gois get a translator on 106.1 when there is another station already broadcasting there?
 
The FCC limits the MAXIMUM DISTANCE a LPFM can cover, IIRC it is 5.6KM or approx 3.5 mile radius for the 60DBu signal.

The wattage and HAAT are calculated to ensure that the 60DBu pattern does not ever exceed the 5.6 KM distance in the regulation.

There will be some coverage in the 50 and 40 DBu area, and that is somewhat of an afterthought.... it is what it is.... but a LPFM can not interfere with a translator or a Class rated FM. The LPFM also has to accept any interference from a station higher up on the food chain.

So.... as long as the 60DBu patterns do not overlap, and the C.O.L.'s are covered, they are Kosher.

In any case a LPFM can not exceed 100 watts .... if you can't cover the 5.6KM radius with 100 watts, the application would not be approved.

http://recnet.com/73811
 
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MRBIboredop said:
The FCC limits the MAXIMUM DISTANCE a LPFM can cover, IIRC it is 5.6KM or approx 3.5 mile radius for the 60DBu signal.

The wattage and HAAT are calculated to ensure that the 60DBu pattern does not ever exceed the 5.6 KM distance in the regulation.

So.... as long as the 60DBu patterns do not overlap, and the C.O.L.'s are covered, they are Kosher.

In any case a LPFM can not exceed 100 watts .... if you can't cover the 5.6KM radius with 100 watts, the application would not be approved.

http://recnet.com/73811
Click to expand...

Distance of coverage is not part of the FCC rule. The maximum authorization is 100 watts at 100 feet, and the FCC's own site says that such a facility will cover approximately 5.6 km around the transmitter. The keyword here is "approximately" as sites in hilly locations may significantly under-perform and in a few cases they might over-perform in some locations.

LPFM stations are authorized for noncommercial educational broadcasting only (no commercial operation) and operate with an effective radiated power (ERP) of 100 watts (0.1 kilowatts) or less, with maximum facilities of 100 watts ERP at 30 meters (100 feet) antenna height above average terrain (HAAT). The approximate service range of a 100 watt LPFM station is 5.6 kilometers (3.5 miles radius).

https://www.fcc.gov/media/radio/lpfm


LPFMs with higher antenna height will reduce power to be the equivalent of 100 watts at 100 feet. For people who do not understand power vs. height calculations, they specify that the power at over 100 feet must not cover more than the equivalent of 100 watts at 100 ft. Since there is no such thing as perfect terrain in populated areas, the distance issue is subjective but always subordinate to the power vs. height calculations.

Cities of location are not germane in the LPFM rules as there are already cases of more than one LPFM on the same channel in the same city of license. So there are no City of License rules, and stations are intended to serve neighborhoods, not cities.

There are many cases where an LPFM would not come close to covering the 5.6 km radius due to terrain issues such as hills, mountains, canyons, etc. In such case, the issue is entirely about power and height.
 
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