Jerry Pyle wrote:
> I am in the process of setting up my station to run RTTY, preferably FSK.
>
> My Omni VI Mod3 has all of the filter slots filled and upon inspection I
> found that there is not a 217 filter amongst the bunch.
>
> I have been on the searchable archives looking for a possible Inrad filter
> that will work in place of the 217 (which we all know TenTec no longer
> makes) or another workable solution using my existing 500hz filters.
>
>
>
>
>
>
>
> Jerry - WB7S
>
> Basin, WY
>
>
>
> http://wb7s.home.bresnan.net
>
>
>
> 73
I use my Omni6 on RTTY without a problem. Had a 217 and sold it, too
narrow. Use LSB and your 500hz filter(s) and you won't have a problem.
FSK is fine as long as the 2 xtals are 170Hz apart, any more/less you
will not be happy. I use AFSK and as long as it is set right you won't
have any problems.
If you do use FSK, the PBT needs to be set at 3 o'clock.
All that is needed for the FSK keying cicuit is a 1K resistor in series
with the TXD line.
Ed W3NR
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