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Joined 1 year ago
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Cake day: July 2nd, 2023

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  • For those like myself, wondering why is this significant, here’s a comment from Reddit:

    Here’s a long answer. To the first question, “What’s the significance of 915Mhz?”

    In the United States, all devices which emit electromagnetic energy (radio waves) are legally under the purview of the Federal Communications Commission (FCC). The FCC publishes regulations which state the conditions that must be met to make these emissions legal. Most of the time, the rules primarily relate to the frequency and power of the radio waves being emitted. Secondarily, the intentions of the device owner are considered.

    So what’s special about 915 MHz under these rules? 915 MHz is the center frequency of a band of frequencies, stretching from 902 MHz to 928 MHz, which has been set aside for “Industrial, Scientific and Medicine” use (ISM). Subject to several other conditions, this band is free for anyone to use for nearly any legal purpose.

    This is unlike other frequencies, such as the band from 88 MHz to 108 MHz, which can only legally be used by commercial FM radio stations, and only then if they’ve received a license for the specific frequency they’ve been assigned and hired licensed engineers who ensure that the signal won’t interfere with any other licensed stations and obeys other technical requirements.

    There are other ISM bands beside 902-928 MHz. One of them is at 2.4 GHz, which make look familiar as well.














  • Validated voters

    Members of Pew Research Center’s nationally representative American Trends Panel were matched to public voting records from national commercial voter files in an attempt to find records for voting in the 2016 and 2020 general elections. Validated voters are citizens who told us in a post-election survey that they voted in a given election and have a record for voting in that election in a commercial voter file. Nonvoters are citizens who were not found to have a record of voting in any of the voter files or told us they did not vote.

    In an effort to accurately locate official voting records, up to three commercial voter files were searched for each panelist. The number of commercial files consulted varied by when a panelist was recruited to the ATP. Three files were used for panelists recruited in 2022 or before, while one file was used for panelists recruited in 2023. Altogether, files from four different vendors were used, including two that serve conservative and Republican organizations and campaigns, one that serves progressive and Democratic organizations and campaigns, and one that is nonpartisan.

    Additional details and caveats about the validation of votes in 2016 and 2020 can be found in these methodological reports:

    An examination of the 2016 electorate, based on validated voters
    Validated voters methodology
    

    https://www.pewresearch.org/politics/2024/10/10/pre-election-attitudes-methodology/

    I believe you gotta go to each survey they’ve done for each of the widget to find out the source. I think they’re all based on the voter registration