Hi Jim,
Thank you for providing several information and consideration on 160m.
As you stated below, 3Y0Z team should simply select 1.840MHz for their FT8
operation informing us to do so in advance. I do not know the reason why they
pick up 1.835MHz. which is against IARU R1 & 2 bandplans without guessing it
is “disconnect”.
I hope member of this group near them will contact them and talk to make
appropriate suggestion based on our experience. Bouvet is too far to talk from
Tokyo and only FT8 can do (a joke).
Regards,
On 160M, for example,the JT65 band segment is a 2.5 kHz channel
corresponding to a USB transmitter with an indicated carrier frequency
of 1838 kHz, FT8 with a carrier at 1840.
take
de JA5AEA
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
________________________________
From: Takehiko Tsutsumi <ja5...@outlook.com>
Sent: Tuesday, November 28, 2017 3:06:07 PM
To: WSJT software development
Subject: Re: Does 3Y0Z FT8 Band Plan Violate IARU and Local Bandplans?
Hi,
Apparently, It looks like there is a disconnect between us and 3Y0Z team based
on the fact that I have not received any response from you.
After reviewing their band plan including CW, SSB, RTTY along with IARU R2, I
confirmed FT8 is the only mode against IARU R2 bandplan. That means CW, SSB and
RTTY are perfect from IARU R2 band plan harmonization viewpoint.
I have already posted the similar message to "3Y0Z -Bouvet Island DXpedition"
Facebook and I am waiting their response.
If you have any communication with them, I am appreciated if you will help to
warn them.
Regards,
take
de JA5AEA
3YØZ Band Plan
BAND CW SSB RTTY FT8*
160 1.826.5 MHz
1.835 MHz
80 3.523 MHz 3.785 Mhz 3.580 MHz 3.570 MHz
60 ** 5.400 MHz ** 5.400 MHz **
5.357 MHz **
40 7.023 MHz 7.082 MHz 7.045 MHz 7.071 MHz
30 10.108 Mhz
10.142 MHz 10.133 MHz
20 14.023 MHz 14.185 MHz 14.080 MHz 14.067 MHz
17 18.079 MHz 18.130 MHz 18.099 MHz 18.095 MHz
15 21.023 MHz 21.285 MHz 21.080 MHz 21.067 MHz
12 24.894 MHz 24.955 MHz 24.912MHz 24.912 MHz
10 28.023 MHz 28.485 MHz 28.080 MHz 28.067 MHz
6 50.190 MHz (EME)
50.316 MHz
2 144.144 MHz (EME)
On 11/27/2017 12:07 AM, Tsutsumi Takehiko wrote:
Hi,
I found an interesting 3Y0Z bandplan scheduled to operate in early 2018 and I
wonder they may violate IARU and local (JA) bandplans and it may create trouble
for us.
For example, on 20m, it say that 3Y0Z transmits TX= 200-400Hz on QRG=14.067MHz
and we are instructed to transmit TX=400-2,00Hz on QRG=14.067MHz. This means we
are operating on CW band.
See 3Y0Z Band Plan and FT8 operation operation notice (* mark).
http://www.bouvetdx.org/band-plan-frequencies/
I searched with “Bouvet” on this mailing lists and found the following thread.
I am not sure they are appropriate reference or not but I attached for your
review. Unfortunately, I am against Rich’s recommendation to use
14.112-14.125MHz by the reason that FT8 is a NBD and it can not be ALL Modes by
the definition of IARU (?).
Does anybody know the process to create FT8 band plan of this DX-pedition?
Regards,
take
de JA5AEA
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
On 8/20/2017 3:27 PM, Rich - K1HTV wrote:
>
> Additional 20 M FT8 frequencies for DXpeditions & general DX use
> ------------------------------------------------------------------------------------------------
>
> The question has been posed as to the best frequencies for DXpeditions
> while operating the FT8 mode.
>
> Lets focus on 20 Meters, which will probably be the most heavily used
> DX band as we approach the bottom of the solar cycle.
>
>
> From the IARU Region 1,2 & 3 Bandplan documents:
>
> IARU Region 1:
>
> 14 060 – 14 070 (200 Hz BW) CW,
> 14 060 kHz – QRP Centre of Activity
>
> 14 070 – 14 089 (500 Hz BW) - Narrow band modes – digimodes
>
> 14 089 – 14 099 (500 Hz BW) -Narrow band modes - digimodes
> automatically controlled data stations (unattended)
>
> 14 099 – 14 101 - IBP, exclusively for beacons
>
> 14 101 – 14 112 (2700 Hz BW) - All modes – digimodes, automatically
> controlled data stations (unattended)
>
> 14 112 – 14 125 (2700 Hz BW) All modes
>
>
> * * * * **
>
>
> IARU Region 2:
>
> 14060-14090 (500Hz BW) - ALL MODES, DIGIMODES
> 14100.5-14125 (2700Hz BW) - ALL MODES, FAST DIGIMODES, AUTOMATIC
>
>
> IARU Region 3:
>
> Considering the dramatic increase in data mode usage on the 20 meter
> band, it is recommended that the sub-band for
> these classes of signals be 14.070 MHz to 14.112 MHz (with +/- 500 Hz
> at 14.100 MHz for beacons), and within that
> data sub-band the current practices of traditional data modes may
> continue up to 14.095 MHz with 14.095 to 14.112 MHz
> being reserved for other data modes including Packet.
>
>
> - - - - - - -
>
>
> In IARU Regions 1 & 2, both indicate ALL modes up to 14.125 MHz. Only
> in Region 3 are the digital modes recommended
> between 14.070 and 14.112 MHz.
>
>
> For major DXpeditions in Regions 1 & 2 is there any reason why
> frequencies above 14.112 MHz can't be used for the FT8 mode by
> DXpeditions or for FT8 DXing in general? It has been less that 2
> months since WSJT-X software with the FT8 mode has been made available
> to the general Ham population. But already the frequency range between
> 14074.2 and 14076.4 KHz is very often packed with hundreds of stations
> simultaniously using that small segment. And the congestion will only
> get worse in the months to come, especially when DXpeditions start
> using the new digital mode.
>
>
> I would strongly suggest that serious consideration be given for the
> use the FT8 mode on 20 Meter frequencies between
> 14.112 and 14.125 MHz.
>
>
> 73,
> Rich - K1HTV
>
>
>
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>
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