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Update the White Paper describing features of WSJT-X Version 2.0.
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Joe Taylor
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@ -8,10 +8,10 @@ payloads rather than the present 72 or 75 bits. This modest increase
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in information content will make possible new message types that
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support the following special types of QSOs and exchanged information:
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1. NA VHF Contest operation with full support of grid exchanges and
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"/R" (Rover) callsigns
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1. NA VHF Contest operation with full and transparent support of grid
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locators and "/R" (Rover) callsigns
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2. EU VHF Contest operation with the exchange of 6-digit grids, QSO
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2. EU VHF Contest operation with the exchange of 6-digit locators, QSO
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serial numbers, and "/P" (portable) callsigns
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3. ARRL Field Day operation with standard Field Day exchanges
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@ -22,68 +22,34 @@ support the following special types of QSOs and exchanged information:
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callsigns
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6. A special "telemetry" message format for exchange of arbitrary
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information up to 71 bits
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information (up to 71 bits)
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Decoding sensitivity for the new messages will be atleast as good as
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for the FT8 and MSK144 modes presently in WSJT-X v1.9.1. The existing
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FT8 DXpedition mode will be supported, and a more powerful DXpedition
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mode may be offered as well.
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Decoding sensitivity for the new messages will be essentially the same
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as for the FT8 and MSK144 modes presently in WSJT-X v1.9.1. The
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existing FT8 DXpedition mode will still be supported, and a more
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powerful DXpedition mode may be offered as well.
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In this document we'll call the new FT8 protocol "FT8+". It will be a
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superset of the FT8 implemented in v1.9.1, providing at least
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temporary compatibility and inter-operability with older program
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versions. We may decide to remove the support for backward
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compatibility in FT8 after a specified switchover interval.
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versions. We may decide to remove support for old-style 72- and
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75-bit messages after a specified switchover interval.
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In contrast, the new MSK144 protocol will replace the old one without
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backward compatibility. We believe the smaller and more specialized
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group of MSK144 users will upgrade quickly and not find this
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restriction to be a problem.
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To minimize any confusion that may arise during a switchover from
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v1.9.1 to v2.0, we tentatively propose the following schedule:
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September 15, 2018:
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-------------------
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A beta-test version v2.0.0-rc1 will be made available for download.
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FT8+ will support the old (v1.9.1) protocol as well as the new message
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types described below. Frequencies formerly used for JT9 on the HF
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and VHF bands will be recommended for testing the new features in
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FT8+. MSK144 will be fully functional between any two stations using
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v2.0.0-rc1, but will not be backward compatible with earlier program
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versions. The original MSK144 protocol will be declared obsolete.
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Program version v2.0.0-rc1 (and any subsequent versions 2.0.0-rc#)
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will probably include an automatic "timeout date" or other mechanism
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to force upgrading when newer versions become available.
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November 1, 2018:
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-----------------
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Official GA release of WSJT-X v2.0.0.
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Dates of relevant upcoming ARRL contests
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-----------------------------------------
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VHF QSO Party: September 8-10, 2018
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RTTY Roundup: January 5-6, 2019
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VHF SS: January 19-21, 2019
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Note that our proposed schedule makes v2.0 available for relevant ARRL
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contests in 2019. However, the ARRL September 2018 VHF QSO Party will
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need to use v1.9.1.
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Here are some examples of messages that will be supported by FT8+ and
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MSK144 in WSJT-X v2.0. The list is not exhaustive. Parameters i3 and
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n3 are used in the software to define major and minor message types.
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Here are some examples of message formats that will be supported by
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FT8+ and MSK144 in WSJT-X v2.0. The list is not exhaustive.
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Parameters i3 and n3 (shown in column 1) are used in the software to
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define major and minor 77-bit message types.
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----------------------------------------------------------------------------------
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i3.n3 Example Messages Comments
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----------------------------------------------------------------------------------
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0.0 TNX BOB 73 GL Free text
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0.1 K1ABC RR73; W9XYZ <KH1/KH7Z> -08 DXpedition Mode (Fox only)
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0.1 K1ABC RR73; W9XYZ <KH1/KH7Z> -08 DXpedition Mode (sent only by Fox)
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0.2 G4ABC/P R 570007 JO22DB EU VHF Contest
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0.2 PA9XYZ 590003 IO91NP EU VHF Contest
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0.3 K1ABC W9XYZ 6A WI ARRL Field Day
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@ -122,7 +88,11 @@ i3.n3 Example Messages Comments
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Here are some examples of minimal QSO sequences that take advantage
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(where necessary) of the new protocol capabilities:
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(where necessary) of the new protocol capabilities. Model QSOs number
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1 and 2 are supported already, with the present FT8 and MSK144
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protocols, and number 3 with the existing FT8 DXpedition Mode. Model
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QSOs 4-8 (and others not illustrated here) require the new protocols
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with 77-bit messages.
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----------------------------------------------------------------------------------
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1. Standard QSO
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@ -151,6 +121,7 @@ CQ KH1/KH7Z
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K1ABC KH7Z -12
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KH7Z K1ABC R-14
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KH7Z W9XYZ EN37
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... possibly other callers ...
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K1ABC RR73; W9XYZ <KH1/KH7Z> -08
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----------------------------------------------------------------------------------
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@ -187,7 +158,7 @@ PA9XYZ 590003 IO91NP
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PA9XYZ G4ABC/P RR73
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----------------------------------------------------------------------------------
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8. Compound calls
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8. Compound call
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----------------------------------------------------------------------------------
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CQ PJ4/K1ABC
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<PJ4/K1ABC> W9XYZ
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@ -195,3 +166,47 @@ W9XYZ K1ABC -11
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K1ABC W9XYZ R-09
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W9XYZ <PJ4/K1ABC> RRR
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<PJ4/K1ABC> W9XYZ 73
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----------------------------------------------------------------------------------
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To minimize confusion that's likely to arise during a switchover from
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v1.9.1 to v2.0, we propose to follow a well advertised schedule:
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"RC1 Date" -- perhaps as early as September 15, 2018?
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-------------------------------------------------------
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This will be the first chance for beta testers to try WSJT-X using the
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77-bit messages. We may restrict this opportunity to specific
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volunteer testers, and we'll probably include an "upgrade by
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xxxx_date" message to remind people that they are using a release
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intended only for testing.
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FT8+ will support the old (v1.9.1) protocol as well as the new message
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types outlined above. To avoid QRMing legacy FT8 users with messages
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they can't decode, we'll recommend testing FT8+ on frequencies
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formerly used for JT9.
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MSK144 will be fully functional between any two stations using the RC1
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software, but it will not be backward compatible with earlier program
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versions.
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"RC2, RC3,... Date" -- perhaps in October?
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--------------------------------------------
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As needed, depending on results of testing.
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GA Release Date -- perhaps in November?
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---------------------------------------------
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Official General Availability release of WSJT-X v2.0.0. The original
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MSK144 protocol will be declared obsolete.
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For reference: Dates of relevant upcoming ARRL contests
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-------------------------------------------------------
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VHF QSO Party: September 8-10, 2018
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RTTY Roundup: January 5-6, 2019
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VHF SS: January 19-21, 2019
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Our proposed schedule should make WSJT-X Version 2.0 usable for
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relevant ARRL operating events in 2019.
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