As I recall you have to adjust the slope tuning to bring in the tones.
John N1JM
On Sep 10, 2011, at 5:11 PM, wyc wrote:
>> From AA5AU's page http://www.aa5au.com/rtty_radios.html#TS-850 I see several
> people have used a narrow (250 or 270 Hz) CW filter on RTTY. (I understand
> there are drawbacks in hearing off-frequency signals...)
>
> I can't seem to get it to work. (I've got a Kenwood YG-455CN1 250 hz filter
> installed in the 455 Khz IF). When I switch that filter in, the noise
> spectrum drops way down for the right-most marker in the MMTTY UI. (I can
> send screen shots if it'd help.)
>
> I've tried both high tones and low tones, with the same result.
>
> I'm using the rig's true FSK - not AFSK.
>
> I wonder if I'm missing something - why are the RTTY tones not equally
> spaced within the filter passband?
>
> (I've also got a 400 Hz filter. It's broad enough to pass both tones. But
> for it, too, the tones don't seem to be centered in the passband.
>
> Any help would be welcome.
>
> tnx/73,
>
> Bill, K2PO
> _______________________________________________
> RTTY mailing list
> RTTY@contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
|