Hi Bill,
Thanks for sharing your draft: an interesting analysis of the changeover
to the "v2.0" message formats for FT8. Here are a few more comments, in
addition to the ones already posted here by Bill Somerville, G4WJS.
1. We published a schedule, three months in advance, specifying target
dates for intermediate candidate releases for beta testing. We
publicized this schedule as widely as possible, and we stuck to it.
2. The first three candidate releases included "bi-lingual" capability
for the old and new protocols. This helped to encourage beta testing
and feedback from interested users, and helped to show users that
upgrading was a simple drop-in replacement.
3. Candidate releases 4 and 5 were "new protocol only". They allowed us
to eliminate large amounts of obsolete code and fix most of the bugs
introduced by these wholesale changes.
-- 73, Joe, K1JT
On 1/15/2019 7:04 PM, Bill Frantz wrote:
I have written a short paper about the conversion from from release 1 to
release of the FT8 protocol and invite people to review the initial
draft. It is mainly oriented toward software engineers.
<https://www.dropbox.com/s/mynj3cb1ycdyk05/FT8%20Flag%20Day.txt?dl=0>
Flag Day with FT8
Bill Frantz, AE6JV
West Valley Amateur Radio Association
Northern California DX Club
Northern California Contest Club
Abstract
Recently a community of over 20,000 users did a conversion between
release 1 and release 2 of a amateur radio digital communications
protocol called FT8. The old version of the protocol was not compatible
with the new version, resulting in a flag day event for users. However,
the conversion was rapid proceeded smoothly. Lessons from this
conversion should be useful for other software projects.
Please let me know of any errors or omissions.
Thanks - Bill AE6JV
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