locked What is meaning of "a1" and "?" in FT8 received window #decode #reception


Dick McClain
 

In following window, what is the meaning of the "a1" and the "?" which is 
shown on some lines on the right side?

Thanks and 73,
Dick,, KD4S




Bill Somerville
 

On 01/09/2021 22:38, Dick McClain wrote:
In following window, what is the meaning of the "a1" and the "?" which is
shown on some lines on the right side?

Thanks and 73,
Dick,, KD4S
Hi Dick,

the WSJT-X User Guide has the answer to that.

https://physics.princeton.edu/pulsar/k1jt/wsjtx-doc/wsjtx-main-2.4.0.html#_ap_decoding

73
Bill
G4WJS.


Dave (NK7Z)
 

Long explanation, see page 78 of the current manual.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 9/1/21 2:38 PM, Dick McClain wrote:
In following window, what is the meaning of the "a1" and the "?" which is
shown on some lines on the right side?
Thanks and 73,
Dick,, KD4S


KT7AZ
 

Short answer, shows the probability of reliability of signal data.  There is a chart you can refer too, but is normal at the link in another post.
Gary
--
KT7AZ