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87.5 FM is the first useable radio broadcast frequency on the FM radio band spanning between 87.5 and 108 FM or VHF Band 2.The use of 87.5 FM as the main carrier frequency of a legally established and licensed radio station is rare in most countries as it transmits signals slightly off band down to roughly 87.3 and possibly as low as 87.2 FM.
Half-life (symbol t ½) is the time required for a quantity (of substance) to reduce to half of its initial value.The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive.
DWFO (87.5 FM), broadcasting as 87.5 Republika, is a radio station owned and operated by the Presidential Broadcast Service, the broadcast arm of the Presidential Communications Group.
These stations transmit an analog FM signal centered on 87.75 MHz, designated by receiver and station marketing as "87.7 FM". This is just below the lowest FM band frequency of 87.9 MHz, and within the internationally recognized Band II, which extends down to 87.5 MHz and is thus receivable by most consumer radios.
Operators on this band and the 6-meter band (50–54 MHz) use the presence of broadcast stations as an indication that there is an "opening" into Eastern Europe or Russia. This can be a mixed blessing because the 4 meter amateur allocation is only 0.5 MHz or less, and a single broadcast station causes considerable interference to a large part ...
87 is: . the sum of the squares of the first four primes (87 = 2 2 + 3 2 + 5 2 + 7 2).; the sum of the sums of the divisors of the first 10 positive integers. [1]the thirtieth semiprime, [2] and the twenty-sixth distinct semiprime [3] and the eighth of the form (3.q).
WRME-LD (channel 33) is a low-power television station in Chicago, Illinois, United States, affiliated with Jewelry Television.The station's audio channel, transmitting at 87.75 MHz (or VHF channel 6), lies within the FM band; as a result, WRME-LD's audio channel operates as a radio station at 87.7 FM.
The brand was formerly owned and operated by Mega Media, which it operated under a leasing deal with WNYZ-LP, broadcasting at 87.7 (channel 6), with plans to expand the format to other cities only to incur financial losses and disputes over the business arrangements, leading to the station's demise in 2009.