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explain what this test is doing, I couldn't figure it out

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Jeff Epler 2025-08-07 10:00:48 -05:00
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test/wwvbgen_testcases/enddst-phase
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# SPDX-FileCopyrightText: 2021 Jeff Epler
#
# SPDX-License-Identifier: CC0-1.0
#
# "For six minutes each half hour, from 10–16 and 40–46 minutes past each hour,
# one-minute frames are replaced by a special extended time frame. Rather than
# transmitting 35 bits of information in one minute, this transmits 7 bits
# (time of day and DST status only) over 6 minutes, giving 30 times as much
# energy per transmitted bit, a 14.8 dB improvement in the link budget compared
# to the standard one-minute time code." (wikipedia)
#
WWVB timecode: year=2021 days=311 hour=08 min=10 dst=1 ut1=-100 ly=0 ls=0 --channel=phase
2021-311 08:10 010000110100000111110110000001010110111111100110110101010001
2021-311 08:11 001001100111100011101110101111010010110010100111001000110001