[RTTY] MMTTY startup tone?
chen at mac.com
Tue Feb 25 19:15:27 EST 2014
On Feb 25, 2014, at 3:53 PM, Jamie WW3S wrote:
> I noticed in this the last few rtty contests a stranger sounding “start” to RTTY, and if I recall, there was some discussion here about a setting in MMTTY that allows other station to sync on your signal better....is that what I’m hearing, and what is that setting?
You are probably hearing a 2Tone transmission, which starts with a long Space tone instead of the traditional short Mark tone. The reason David gave is that it allows selective fading to be measured by the receiver before the first character is transmitted.
I have been told that fldigi is doing the same thing, but don't have first hand knowledge.
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