[GreenKeys] RTTY shift(s) etc.

[Gary Chatters]

On Tue, 20 Apr 2004 telegrapher@att.net wrote:

> Seems to me that back in the 70's it was proposed to the FCC that we be
> allowed to use 85 cycle shift.  I don't remember what the reply was but
> it amounted to, more or less that it wouldn't gain us anything so "NO"
> was the answer.
>


By the '70's, the FCC permitted FSK operations with not more than 1 kHz
shift.  Any objections to using 85Hz shift did not come from the FCC.  I
don't know why 170Hz shift became popular.  It was probably easier to
impelment than 85Hz shift.

gc