Hi Glenn,
FT4 and FT8 are a tiny fraction of what's available in WSJT-X. Modes
that meet the needs you describe are already available in the program.
Spend some time reading the WSJT-X User Guide. Pay particular attention
to Section 17.2. Its Table 7 summarizes the threshold sensitivities of
many of the available modes and submodes. For weak signal work on 160m
you might want to look at the FST4-xxx submodes. These submodes offer
sensitivities from 3 dB to 22 dB better than FT8 on an AWGN channel, and
comparable improvements on most channel conditions likely to be found on
our MF bands, including 160m.
-- 73, Joe, K1JT
On 12/7/2023 10:46 AM, Glenn Williams via wsjt-devel wrote:
Hello,
FT8 on 160m pales.
WSJT-X operators customarily running FT8 and FT4 on 80m through 10m HF
bands are likely disappointed with trials on 160m. As one of those
operators I recently ran WSPR on 160m in comparison to working FT8 QSOs
on 160m. In NA EST daytime operation at 2220Z WSPR faultlessly listed a
-28 dBm decode.
Here I suggest we need an improved decode sensitivity for 160m QSOs,
likely needing to be done with a new mode. Granted, the TX and RX times
would have to be increased (Shannon-Hartley Theorem). That would require
additional operator patience and associated protocols for the extended
timing.
--73, Glenn, AF8C
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