[RTTY] 300hz or 500hz IF filter?

[Bill Turner]

ORIGINAL MESSAGE:          (may be snipped)

On Fri, 23 Aug 2013 20:08:21 -0400, Kai wrote:

>
>Bill
>As I  noted in the FCC/NTIA/ITU-R reference the specific definition of the BW is 
>that which includes 99% of the power.  More specifically, less than 0.5% of the 
>power appears below and less than 0.5% of the power appears above the stated BW.

REPLY:

I can accept that, as well as 98% or 98.5% or practically anything in that
area, but that's not what you originally said. You originally said " The
theoretical bandwidth of 170 Hz shift 45.45 baud RTTY is just under 250 Hz."
and that is what I disagreed with. The theoretical bandwidth is infinite. 

73, Bill W6WRT