It is interesting to me that the new JT modes seem to be emphasizing speed.
From my perspective I view the digital modes as a means of completing qso's
that can't be done with traditional analog modes and am happy to trade off
speed for better weak signal performance. Or I like really fast modes that
can exploit brief propagation modes such as meteor scatter outside of a major
meteor shower.
That being said the activity levels where I live are low enough that if I
manage to work more than 10 stations while activating a rare grid in VE7 land I
consider the trip to be a great success (: So my perspective may be a bit
unusual (:
I'll be curious to see how this new mode works out in practice. I appreciate
the efforts of the developers and early adopters / testers.
In the mean time I am expecting to use JT9 on 50 MHz this season.
73
Mark S
VE7AFZ
mark@alignedsolutions.com
604 762 4099
> On May 2, 2019, at 9:29 AM, Aa4zz via VHFcontesting
> <vhfcontesting@contesting.com> wrote:
>
> Per Joe Taylor's talk at the VHF Super Conference
> The faster speed comes with a trade off of 4.5db less sensitivity.
> Of course for many QSO's that will not matter, but on weak signals it may.
> 73 Paul AA4ZZ
>
>
>
>
> Message: 1
> Date: Mon, 29 Apr 2019 10:47:01 -0700
> From: Brian Dickman <brian.dickman@gmail.com>
> To: VHFcontesting@contesting.com
> Subject: [VHFcontesting] FT4 mode
> Message-ID:
> <CAJnrbTwEcfmp0MVKXZV7kSc8OFhvTK9w-4YVE+hUHu_mvveMzg@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Since the topic hasn't appeared on this list yet, I figured it would be a
> good idea to make folks here aware of the pending WSJT FT4 mode in case
> they hadn't seen it already.
>
> The tl;dr:
> * 2.5X faster than FT8
> * Same contesting features as FT8
> * Automatic search and pounce mode
> * 144.170MHz proposed 2m frequency
>
> To read more, here's a couple links:
>
> *
> http://www.arrl.org/news/faster-more-contest-friendly-ft4-digital-protocol-to-debut-in-a-week
> * http://physics.princeton.edu/pulsar/k1jt/FT4_Protocol.pdf
> *
> http://www.southgatearc.org/news/2019/april/video-of-ft4-talk-by-joe-taylor-k1jt.htm#.XMc36OhKhaQ
> (video
> of a club talk Joe Taylor made about FT4)
>
> 73,
> --
> Brian AF7MD
>
>
>
>
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