This release - prevents unnecessary resizing of RTTY receive panes when initiating transmission - upgrades MMTTY to version 1.68a, which provides a new "Dual Peak Filter" (tnx to Mako-san JE3HHT and Oba-san JA7UDE) - upgrades EXTFSK to version 1.06, which increases the range of serial ports supported to COM1-COM16 (tnx to Oba-san JA7UDE) - if MMTTY version 1.68 or later is running, provides a Dual Peak Filter checkbox in the Main window's "RTTY Receive" panel - adds an AA6YQ-FIR-512 profile to the USERPARA.ini file in WinWarbler's Profiles folder; this profile optimizes MMTTY's RTTY demodulator for weak-signal decoding - remembers Monitor list column widths between operating sessions (tnx to GB KC5GB) - switches to QPSK mode when directed by SpotCollector to handle a QSPK31, QPSK63, or QPSK125 spot - updates the CW.htm, CWSettings.htm, PTTSettings.htm, SoundcardRTTYReception.htm, and SoundcardRTTYSettings.htm documentation files Notes: 1. To enable the new "Dual Peak Filter", check the DPF box in the Main window's "RTTY Receive" panel; unlike enabling the Bandpass (BPF) or Notch filters, the effects of this filter are not visible in the tuning display (spectrum or waterfall). 2. To optimize WinWarbler for weak signal RTTY decoding, select the AA6YQ-FIR-512 profile; this profile does not compensate for echos or selective fading. WinWarbler 6.8.6 is available via the DXLab Launcher or via 73, Dave, AA6YQ