ARLA/CLUSTER: 3Y0Z: Dez passos para trabalhar no modo digital FT8 a DXpedition à Ilha de Bouvet

[João Costa > CT1FBF]

*3YØZ Band Plan*

BANDCWSSBRTTYFT8*
*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)*

**  These are our FT8 TRANSMIT frequencies.  We will operate in the normal
split fashion common on FT8.  We will transmit low in the passband (200 –
400 Hz) and listen up.  DO NOT TRANSMIT ON OUR TRANSMIT FREQUENCY; we will
not listen there.  Set your transmit frequency higher in the passband.  Be
certain your TX and RX frequencies are not locked together.  Click <HERE>
<http://www.g4ifb.com/html/digimodes.html#JT65>  to view ZL2IFB’s Tips for
FT8 DXers.*

***  We will follow Norway’s 60 meter frequency allocation plan.  Our
transmit frequency will be 5.400 MHz for CW and SSB , operating true
SPLIT.  Our FT8 transmit frequency will be 5.357 MHz.*

*We may adjust our transmit or receive frequencies, depending on conditions
or interference.*


*FT8Ten Steps on How to Work 3YØZ (Bouvet) With FT8*

*Due to the relative newness of this mode, there is a need for operators to
understand how to operate FT8 correctly, and to maximize their chances of
getting into the 3YØZ log.*

*FT8 will not be a “primary� mode.   We will use this mode when the band
dies, or before it opens.   If a band appears dead, watch for us on the FT8
transmit frequencies listed above.  3YØZ operations on FT8 will not use
“normal� FT8 sequencing (read below).   Using and understanding the
following guidelines will maximize your success in making an FT8 (digital)
contact with 3YØZ Bouvet.*

   1. *First, your computer clock needs to be ACCURATE.  Do not assume it
   is.  An accurate time synch is mandatory for proper decoding and
   sequencing;
http://www.makeuseof.com/tag/pc-times-match-atomic-clock-sync-windows/
   <http://www.makeuseof.com/tag/pc-times-match-atomic-clock-sync-windows/>gives
   instructions on how to do this.*


   1. *Download and install WSJT-X (Version 1.8.0-rc3 or newer)
   from http://physics.princeton.edu/pulsar/K1JT/wsjtx.html
   <http://physics.princeton.edu/pulsar/K1JT/wsjtx.html>*


   1. *Read the the FT8 Help files.  ZL2IFB’s <Tips for FT8 DXers>
   <http://www.g4ifb.com/html/digimodes.html#JT65> is also extremely helpful.*

*4.  We will NOT be using the normal FT8 band segments.  To avoid QRMing
normal FT8 activities, we will conduct our DXpedition FT8 activities just
below the normal PSK segments (except on 6 meters).  See our band plan
above.*

*5.  Do not transmit on our transmit frequency.  Select a clear spot on the
waterfall in the Wide Graph, do a <Shift, Left Click> on that clear spot to
set your transmit frequency, and call us there.  Check the box labeled
“Hold Tx Freq� to keep your transmit frequency locked.  We will not respond
to callers on our transmit frequency.*

*6.  Our transmit frequency may move around low in the passband, but that
is OK.  FT8 will decode the entire passband, and you will decode us
wherever we transmit in that passband segment.  Our moving around will also
help deter DQRM.*

*7.  FT8 is a low power, weak signal mode.  High power and/or “heavy� audio
processing will only hinder your ability to make a contact.*

*8.  Click the “Next� button under “Generate Std Msgs� for the “Tx2�
message.  This will allow you to call us with a signal report, rather than
with your grid square.  We will not respond to stations calling us with
their grid square.  Calling us with a signal report will reduce the number
of sequences per QSO.*

*9.  A typical exchange between KL7YL and 3YØZ will look like:*






*a.)  Bouvet:  K1ABC 3YØZ 73   (finishing a preceding contact)b.)  Vivien
calls:  3YØZ KL7YL -06c.)  Bouvet answers with:   KL7YL 3YØZ -02d.)  Vivien
answers with:  3YØZ KL7YL RRRe.)  Bouvet answers:    KL7YL 3YØZ 73f.)  The
QSO is now complete and KL7YL is in the log.  This took only one minute
(four 15-second sequences) for a complete contact.*

*10.  IMPORTANT!*

*If you see 3YØZ return to someone else, stop transmitting by clicking the
“Halt Tx� button on the FT8 control panel.  Continuing to transmit during a
QSO will NOT increase your chances of making a contact.  Immediately after
seeing 3YØZ transmit a “73� to another station, click on the “Enable Tx�
button to begin transmitting a signal report to 3YØZ.*

*Repeat until you are called by 3YØZ.*
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