Has anyone figured out a way to make an IC-775 use the FL-100 and FL-52A for
AFSK?
Thanks
DE W0ETC
Jerry Flanders wrote:
>
> To set the record straight concerning the 756, I dug out this old post I
> made perhaps 18 months ago concerning how I used my 756 (since sold) on PSK
> with the narrow CW filters in the SSB mode:
> ==============================================
> FYI: I have the FL-100 and FL-52A 500Hz RTTY/CW filters installed in my
> IC-756. To use them on psk31, I went to the setup menu and told the menu
> that they were the FL-223 and FL-222 pair (narrow SSB filters). I also set
> the CW-N and RTTY-N modes to use these "new" filters. (Thanks, Ron Higgs
> and ZL1BPU for the tips on doing all this.)
>
> I can now operate all modes RTTY, CW, and psk31 at 1000 Hz with the 500 Hz
> filters working for me. SInce the rig shifts those filters around according
> to what it _thinks_ is the appropriate offset, I have to "undo" the shift
> by use of the PBT knobs. I have found the appropriate PBT settings to be:
>
> Mode PBT Knob Position*
> RTTY-N inner 4
> RTTY-N outer 8
> CW-N inner 4
> CW-N outer 8
> psk31 inner 8 (USB-N mode)
> psk31 outer 11 (USB-N mode)
>
> * (1=full CCW, 11=full CW)
>
> With my casdaded filters, I can narrow any of the passbands by
> tweaking the PBT positions in the usual way. For instance, I can use psk31
> at 9 and 10, with about 200 - 250 Hz passband. I can actually see it narrow
> down on the waterfall display as I tweak it...
>
> Jerry W4UK
>
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