diff --git a/NEWS b/NEWS index f80ef3344..c9acdcef8 100644 --- a/NEWS +++ b/NEWS @@ -13,6 +13,28 @@ Copyright 2001 - 2021 by Joe Taylor, K1JT. + Release: WSJT-X 2.4.0-rc1 + Feb 3, 2021 + ------------------------- + +WSJT-X 2.4.0 is a program upgrade offering a new mode called Q65. It +builds on the capabilities of the QRA64 mode to offer a flexible large +symbol alphabet, low code rate, mode with excellent characteristics +when used for EME on VHF through to microwave bands, and with +challenging weak signal propagation via iono-scatter and similar on +VHF bands. The Q65 mode carries the same 77-bit message payload as the +popular FT8, MSK144, FT4, and FST4 QSO modes. Q65 also offers a range +of T/R periods (15 second through to 5 mins) and tone spacings (up to +32 times the base spacing) suitable for adapting to required +sensitivity and various channel frequency spreading characteristics. +The Wide Graph plotter has a super-sensitive synchronization spectrum +capable of detecting signals below visibility on the waterfall plot. +The new synchronization plot combined with comprehensive a priori (AP) +decoding techniques and message summing and averaging over multiple Rx +periods should make use near the limits of extreme weak signal +operating better than prior modes in all appropriate situations. + + Release: WSJT-X 2.3.0 Feb 2, 2021 ---------------------