Hi Bill,
Under CPU AMD A8-5500, i.e. poorman's i3, WSJT-X v1.7.0 r7405 works flawlessly
even at blue separator down to zero. It stays at zero after restart the program
and I could not see Gary's issue about the position change of blue separator.
I believe JT9.exe is well designed for multiple format decoding i.e.
JT65/JT9/WSPR. It is Friday afternoon hear and 20m is not crowded and decode
time is less than 5 seconds and I am hoping it will not exceed 10 seconds even
at Weekend traffic. I will let you know if I found problems.
Therefore, I wish to put the following proposal on your desk for further
discussion.
1. Keep the same frequency between JT65 and JT9 up to 6m band.
2. Move the default blue separator at zero frequency at JT9+JT65 mode.
3. Default Tx mode on the front panel will be changed from Tx JT65 # to Tx JT9
@ at JT9+JT65 mode.
We will eventually terminate JT65 mode service within a few years and above is
the middle step for JT65 to JT9 transition. If PC power is poor, we recommend
user will select either JT9 or JT65 single mode. If PC power is sufficient,
user can enjoy dual decoding with JT9+JT65 mode.
I really hope that members will be serious about the JT65 to JT9 transition by
my proposal.
Regards,
take
de JA5AEA
Date: Thu, 6 Jul 2017 22:33:43 +0100
From: Bill Somerville<[email protected]>
To:[email protected]
Subject: Re: [wsjt-devel] WSJT-X: Working frequency suggestions
Message-ID:<[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
On 06/07/2017 09:14, Takehiko Tsutsumi wrote:
Finally, it is a great idea to allocate "JT9 on same frequency as
JT65" on 2200m and 630m. I really wish you to expand this idea up to
6m band as it is a first step to obsolete JT65 and replace to JT9
today and FT8 later. It is the time to deploy this transition to
encourage newly developed frequency spectrum efficient code usage by
the recent rapid increase of the traffic. I do not think we will see
the side effects sharing the spectrum between JT65 and JT9. Am I right?
HI Take san,
thanks for your other comments, that is helpful as we have little
experience or data modes usage in region 3.
There is a down side to sharing JT9 and JT65 allocations, the JT9
decoder gets confused by JT65 signals and has to spend a lot of time
trying to synchronize them as one or more JT9 signals. This detracts
from the JT9 decoding turnaround. This is why the dual mode JT9+JT65
decoder expects to decode JT9 signals above the blue separator line. If
you move that separator down to zero on a band full of JT65 signals you
will probably see the problem.
73
Bill
G4WJS.
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