AA0ZZ KEYER MUTE DELAY ANALYSIS CBJ 10/1/2009 ==================================================================================================================== ==>>>> USE THIS <<<< ================================================================================================ ==================================================================================================================== METHOD 1 - Mute for 7 ms before and after XMIT Affects weight in that DITS ARE SHORTENED by 7ms, SPACES ARE LENGTHENED by 7ms. Advantage over Method 2: Un-muted on every space (QSK) ==================================================================================================================== 25WPM DITS +-----------------------+ +-----------------------+ +---------- Key | 48 | 48 | 48 | | -----------+ +-----------------------+ +----------------------+ | +---------------------------+ +---------------------------+ | Mute | 48+7=55 | 48-7=41 | 48+7=55 | | -----------+ +-------------------+ +------------------|--------- | | | | +-------------------+ +-------------------+ | XMIT | 7 | 48-7=41 | 48+7=55 | 48-7=33 | | -----------|---+ +---------------------------+ +--------------------------- Analysis: Ideal Dit-to-Space ratio is 1.0 Here the Dit-to-Space ratio is 41/55 = .74 25WPM DAHS +-----------------------------------------------------------------------+ +---------- Key | 144 | 48 | -----------+ +----------------------+ +---------------------------------------------------------------------------+ +-------- Mute | 144+7=151 | 48-7=41 | -----------+ +------------------+ | | +-------------------------------------------------------------------+ +------- XMIT | 7 | 144-7=137 | 48+7=55 | -----------|---+ +--------------------------+ Analysis: Ideal Dah-to-Space ratio is 3.0 Here the Dah-to-Space ratio is 137/55 = 2.49 50WPM DITS +-----------+ +-----------+ +-----------+ +-----------+ | Key | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | -----------+ +-----------+ +-----------+ +-----------+ +----------+ | +---------------+ +---------------+ +--------------+ +--------------+ | Mute | 24+7=31 | 17 | 24+7=31 | 17 | 31 | 17 | 31 | 17 | -----------+ +-------+ +-------+ +--------+ +-------| | | | | +-------+ +-------+ +-------+ +-------+ | XMIT | 7 |24-7=17| 24+7=31 | 17 | 31 | 17 | 31 | 17 | | -----------|---+ +---------------+ +---------------+ +---------------+ +----------| | Analysis: Ideal Dit-to-Space ratio is 1.0 Here the Dit-to-Space ratio is 17/31 = .55 50WPM DAHS +-----------------------------------+ +-----------------------------------+ | Key | 72 | 24 | 72 | 24 | -----------+ +-----------+ +----------+ | +---------------------------------------+ +--------------------------------------+ | Mute | 72+7=79 | 17 | 79 | 17 | -----------+ +-------+ +-------| | | | | +-------------------------------+ +-------------------------------+ | XMIT | 7 | 72-7=65 | 24+7=31 | 65 | | -----------|---+ +---------------+ +----------| | Analysis: Ideal Dah-to-Space ratio is 3.0 Here the Dah-to-Space ratio is 65/31 = 2.1 ==================================================================================================================== ==================================================================================================================== ==================================================================================================================== METHOD 1a - Same as "1" except mute for 15ms before and after XMIT (instead of 7ms). Affects weight in that DITS ARE SHORTENED by 15ms, SPACES ARE LENGTHENED by 15ms. ==================================================================================================================== 25WPM DITS +-----------------------+ +-----------------------+ +-------- Key | 48 | 48 | 48 | | -----------+ +-----------------------+ +----------------------+ | +------------------------------+ +------------------------------+ | Mute | 48+15=63 | 48-15=33 | 63 | | -----------+ +----------------+ +---------------|--------- | | | | +----------------+ +----------------+ | XMIT | 15 | 48-15=33 | 48+15=63 | 33 | | -----------|------+ +------------------------------+ +----------------------| | | Analysis: Ideal Dit-to-Space ratio is 1.0 Here the Dit-to-Space ratio is 33/63 = .52 25WPM DAHS +-----------------------------------------------------------------------+ +-------- Key | 144 | 48 | -----------+ +----------------------+ +------------------------------------------------------------------------------+ +---- Mute | 144+15=159 | 48-15=35 | -----------+ +---------------+ | | +----------------------------------------------------------------+ +----- XMIT | 15 | 144-15=129 | 48+15=63 | -----------|------+ +---------------------------+ | Analysis: Ideal Dit-to-Space ratio is 1.0 Here the Dit-to-Space ratio is 33/63 = .52 | 50WPM DITS | +-----------+ +-----------+ +-----------+ +----------+ | Key | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | -----------+ +-----------+ +-----------+ +-----------+ +-----------| | | +-----------------+ +------------------+ +------------------+ +----------------+ | Mute | 24+15=39 | 9 | 24+15=39 | 9 | 39 | 9 | 39 | 9 | -----------+ +----+ +----+ +-----+ +-----| | | | | +----+ +----+ +----+ +----+ | XMIT | 15 | 9 | 24+15=39 | 9 | 39 | 9 | 39 | 9 | | -----------|------+ +------------------+ +------------------+ +------------------+ +----------| | Analysis: Ideal Dit-to-Space ratio is 1.0 Here the Dit-to-Space ratio is 9/39 = .23 50WPM DAHS +-----------------------------------+ +-----------------------------------+ | Key | 72 | 24 | 72 | 24 | -----------+ +-----------+ +----------+ | +----------------------------------------+24-15 +----------------------------------------+ | Mute | 72+15=87 | =9 | 87 | 9 | -----------+ +------+ +-----| | | | | +----------------------------+ +----------------------------+ | XMIT | 15 | 72-15=57 | 24+15=39 | 57 | | -----------|------+ +------------------+ +----------| | | Analysis: Ideal Dah-to-Space ratio is 3.0 Here the Dah-to-Space ratio is 57/39 = 1.5 ==================================================================================================================== ==================================================================================================================== ==================================================================================================================== METHOD 2 - Same as 1 except use longer mute hang time (No QSK). End mute when no new key closure detected after one dit time. Advantage: second dit is full length ==================================================================================================================== 25WPM +-----------------------+ +-----------------------+ | Key | 48 | 48 | 48 | 48 | -----------+ +-----------------------+ +----------------------|--------- | | +----------------------------------------------------------------------------------------------|----+ Mute | | 7 | -----------+ | +--- | | | | +-------------------+ +-----------------------+ | XMIT | 7 | 48-7=41 | 48 | 48 | | -----------|---+ +-----------------------+ +-------------------------------- | 50WPM | +-----------+ +-----------+ +-----------+ +----------+ | Key | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | -----------+ +-----------+ +-----------+ +-----------+ +-----------| | | +----------------------------------------------------------------------------------------------|----+ Mute | | 7 | -----------+ | +---- | | | | +-------+ +-----------+ +-----------+ +----------+ | XMIT | 7 |24-7=17| 24 | 24 | 24 | 24 | 24 | 24 | 24 | -----------|---+ +-----------+ +-----------+ +-----------+ +---------------------