[Elecraft] Center Frequency when setting RTTY Filters

[Charlie, W0YG]

Since the ability to set filters when using the RTTY mode is different than 
LSB/USB if used for AFSK, what center frequency do you use?  Perhaps I 
should rephrase this.  When setting filters in the RTTY mode (the K2 
defaults to the SSB filters when in RTTY mode unless RTTY filters are set) 
do you use 1000 Hz as the center frequency?

Thanks and 73,

Charlie, W0YG..>>