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Amended rules for 77-bit message types.
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@ -10,19 +10,30 @@ i3.n3 Example message Bits Total Purpose
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0.2 PA3XYZ/P R 590003 IO91NP 28 1 1 3 12 25 70 EU VHF contest
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0.2 PA3XYZ/P R 590003 IO91NP 28 1 1 3 12 25 70 EU VHF contest
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0.3 WA9XYZ KA1ABC R 16A EMA 28 28 1 4 3 7 71 ARRL Field Day
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0.3 WA9XYZ KA1ABC R 16A EMA 28 28 1 4 3 7 71 ARRL Field Day
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0.4 WA9XYZ KA1ABC R 32A EMA 28 28 1 4 3 7 71 ARRL Field Day
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0.4 WA9XYZ KA1ABC R 32A EMA 28 28 1 4 3 7 71 ARRL Field Day
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0.5 71-bit telemetry 71 71 TBD
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0.5 0123456789abcdef01 71 71 Telemetry (18 hex)
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0.6
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1 WA9XYZ/R KA1ABC/R R FN42 28 1 28 1 1 15 74 Standard msg
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1 WA9XYZ/R KA1ABC/R R FN42 28 1 28 1 1 15 74 Standard msg
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2 TU; W9XYZ K1ABC R 579 MA 1 28 28 1 3 13 74 ARRL RTTY contest
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2 TU; W9XYZ K1ABC R 579 MA 1 28 28 1 3 13 74 ARRL RTTY contest
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3 PA3XYZ/P GM4ABC/P R JO22 28 1 28 1 1 15 74 EU VHF contest
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3 PA3XYZ/P GM4ABC/P R JO22 28 1 28 1 1 15 74 EU VHF contest
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4 <WA9XYZ> PJ4/KA1ABC R-11 13 53 1 1 6 74 Nonstandard calls
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4 <WA9XYZ> PJ4/KA1ABC RR73 13 58 1 2 74 Nonstandard calls
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5 ...
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5 ...
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6
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6
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7
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7
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----------------------------------------------------------------------------------
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----------------------------------------------------------------------------------
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In case we need them, later:
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5 TU; W9XYZ K1ABC R 579 8 MA 1 28 28 1 3 6 7 74 CQ WW RTTY
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6 TU; W9XYZ K1ABC R 579 MA 1 28 28 1 3 13 74 CQ WPX RTTY
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----------------------------------------------------------------------------------
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NB: three 74-bit message types and two 71-bit message subtypes are still TBD.
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NB: three 74-bit message types and two 71-bit message subtypes are still TBD.
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----------------------------------------------------------------------------------
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----------------------------------------------------------------------------------
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The 28-bit callsign field includes about 19 million impossible "calls"
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that start with three digits. That's more than 2^24 = 17,777,216, so
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these values could be used to implement a 24-bit CRC -- in addition to the
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"CQ xx" and "CQ nnn" forms, possibly enhanced a bit further.
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Further details:
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Further details:
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0.0 Free text, up to 13 characters.
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0.0 Free text, up to 13 characters.
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@ -46,7 +57,13 @@ Further details:
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3. Same as Type 1, but uses /P instead of /R. For European VHF contests.
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3. Same as Type 1, but uses /P instead of /R. For European VHF contests.
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4. One nonstandard call with up to 10 characters, one hashed call, Roger,
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4. One nonstandard call with up to 11 characters, one hashed call,
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and signal report.
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followed by <blank>, RRR, RR73, or 73.
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The following are tentative, not to be included in first release:
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5. CQ WW RTTY - US/Can: RST CQZ state/prov R 579 5 NJ R1 r3 z6 u7
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DX: RST + CQzone R 559 15 R1 r3 z6
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6. CQ WPX RTTY - RST + serial R 589 0013 R1 r3 n12
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