Jim has made the point I was heading towards. Even when 1.9 is released
publically, there will be plenty of users of older versions and some will jump
into fray. In a test, it’s not very likely there will be much QRM. In the
real world, when a rare DX is at stake, I expect it could be quite a mess.
Some will be transmitting on the DX frequency, some will be transmitting into
the 300-900 Hz space, etc. I’m simply trying to stimulate a little
brainstorming about how this could go wrong and what could be done to mitigate
it. We’ve already seen lots of examples of people running old versions of the
code, running RCs past their expiration date, etc.
I’m not a purveyor of gloom and doom, far from it. But it’s difficult to roll
out a dramatically different version of the program once so many are running an
older incompatible version. And, even if they are running 1.9, how will they
get the experience to use the new mode effectively?
Dave / NX6D
________________________________
From: James Shaver <n2...@windstream.net>
Sent: Monday, March 5, 2018 11:09:37 AM
To: 'WSJT software development'
Subject: Re: [wsjt-devel] Public test of FT8 DXpedition mode March 6-7
It also might not be a bad thing if some well-meaning but otherwise
uninformed ops running 1.8 wander into the "pileup" as it may help simulate
real-world conditions where this may also happen with more frequency.
Though they may not decode the "fox" I've seen any number of times where
people will start calling a "DX" even though they can't hear them so I'd
expect this will happen during the public test as word spreads. It'll help
add legitimacy to real-world QRM.
Just my 2 cents, feel free to keep the change :)
Jim S.
N2ADV
-----Original Message-----
From: Joe Taylor [mailto:j...@princeton.edu]
Sent: Monday, March 5, 2018 2:02 PM
To: wsjt-devel@lists.sourceforge.net
Subject: Re: [wsjt-devel] Public test of FT8 DXpedition mode March 6-7
On 3/4/2018 8:12 PM, David Fisher NX6D wrote:
> I’m curious to know what will happen when someone wanders into these
> tests, without RC2, and tries to send one of the messages not used in
> these abbreviated sequences. Will those callers be ignored?
Only Fox sends a new type of message -- that is, one not supported in WSJT-X
v1.8.0.
I hope it's clear in the FT8 DXpedition Mode User Guide
https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fphysics.princeton.edu%2Fpulsar%2Fk1jt%2FFT8_DXpedition_Mode.pdf&data=02%7C01%7C%7Cfd79ea2387714f9be0fa08d582cce425%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636558738863273348&sdata=Fv8YsdwGWJtpSR6%2FWEfmU20p4YKCftMbHMR1DPSlWWk%3D&reserved=0
... that Fox will respond only to
1. Initial calls like line 2 in the User Guide's example sequence (top of
page 2). These messages must be received above 1000 Hz; and
2. Messages like lines 4 and 6, from stations to whom Fox has already sent a
signal report. These must be received between 300 and 900 Hz.
-- 73, Joe, K1JT
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