On 26/07/2017 17:54, Alex, VE3NEA wrote:
The JT65 Communications Protocol document describes two QSO scenarios,
an HF-type scenario that consists of 4 messages, and a VHF-type one,
that consists of 6 messages. Currently the FT8 Auto Seq function in
WSJT-X supports only the VHF scenario. Since FT8 has become so popular
on HF, the HF-style auto sequence should probably be implemented as
well. The message sequence would be like this:
1: VK0EK VE3NEA FN03
2: VE3NEA VK0EK -20
3: VK0EK VE3NEA R-15
4: VE3NEA VK0EK RR CQ
Note the last message that both completes the current QSO and invites
other stations to call. This message should be added to the already
existing list of special messages (CQ, QRZ and DE). I hope there is
still a spare grid square around the North Pole for this new message.
The first three messages in this sequence work the same way as in the
6-message scenario. At stage 4, if the caller (VE3NEA) receives (4),
he knows that the QSO is complete. If he receives (2) again, this
means that the DX did not copy his report, so he repeats his message
(3). If he receives "CQ VK0EK MD66" instead, the caller knows that the
DX OP has given up, and the QSO should not be logged. If nothing is
received at stage 4, then perhaps (3) should be sent a couple more
times before giving up.
Would it be possible to implement this scenario as a user-selected
option in Auto Seq in WSJT-X?
73 Alex VE3NEA
Hi Alex,
the "... RR CQ" type message is what many users use "... RR73" for and
WSJT-X v1.8.0 will optionally support that, it will also support another
abbreviation used for pile up situations or in very brief 6m openings
where a reply to a CQ or QRZ message can be a report message rather than
sending a grid message. The former should only be used judiciously when
the station electing to substitute RR73 for RRR must assess the band
conditions and QSO partner signal strength and use it only when message
repetitions are unlikely to be needed.
This is already coded in the WSJT-X development branch and awaiting
testing before merging to the v1.8 release branch.
73
Bill
G4WJS.
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