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Task #255 — K1EL WinKey USB CW timing becomes very poor (Farnsworth style) when PTT delay is default 50 ms

Attached to Project— Win-Test
Opened by Robert A. Wilson (N6TV) - Monday, 21 Sep 2009, 10:44am
Last edited by F5MZN (f5mzn) - Thursday, 26 Nov 2009, 7:21pm
Bug Report
Requires testing
F5MZN (f5mzn)
Current WT-4.x
90% complete

Both SM5AJV and KL7RA report poor CW timing (similar to Farnsworth mode with extra spaces between characters) when using the K1EL WinKey USB device with the Win-Test default value of PTT Delay = 50 ms specified in the Win-Test Interface Configuration.

Changing the PTT Delay to 0, 1 or even 13 ms seems to eliminate the problem.

The problem does not occur with WinKey chips inside the microHAM MK2R/MK2R+, it only happens with the K1EL WinKey USB box.

Please check to see that Win-Test is issuing the proper \"Set PTT Lead/Tail delay\" command to the WinKey. For 50 ms, the proper command is


for 50 ms lead in, 0 ms tail. Numbers are in units of 10ms (<01> = 10 ms) according to the Winkey USB Manual:

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Comment by F5MZN - Thursday, 26 Nov 2009, 7:20pm

Fix proposed in buid #226.