I have a TS-940S with just an INRAD 400Hz filter #103 in the 8.83MHz IF.
I do have a Kenwood YG-455CN-1 250Hz for the 455kHz IF which I tried it once
and I completely loose one of the tones (not sure which one though)... could
the filter be bad or is the radio in need of realignment?
73,
Julio VE3FH
----- Original Message -----
From: "WS7I" <ws7i@ewarg.org>
To: "RTTY" <rtty@contesting.com>; "Tom Osborne" <w7why@verizon.net>
Sent: Fri, Feb 19, 2010 11:12
Subject: Re: [RTTY] Kenwood IF filters ???
> I have used stacked 250 Hz filters for over 20 years in RTTY contesting
and they just simply work.
>
> Had them in old Icom 751's and the Kenwood 850 which I used for a while. I
have them in the Yaesu FT-1000D even tho I add to add the final one as it
didn't come stock with it.
>
> I do have a 350 Hz filter in my Icom 706 as I tried them both and liked
that one as I use it for DXing and DXpeditions as well as contesting.
>
> I do use 500 Hz for most DXing.
>
>
>
> ---------- Original Message ----------------------------------
> From: "Tom Osborne" <w7why@verizon.net>
> Date: Thu, 18 Feb 2010 19:52:26 -0800
>
> >
> >I also use 250 cycle filters here in my TS-450's. I like them for RTTY
> >contesting. Seems like 500 is too wide for my comfort level. 73
> >Tom W7WHY
> >
> >
> >
> >
> >I only use 250 Hz filters in both IFs. Both in my analog rigs and in my
> >Icom 7600.
> >
> >73
> >Jim W7RY
> >
> >
> >> Hmmmm ??? Okay. I am using MMTTY. WPX last week was my first
contest.
> >> I
> >> wasn't aware MMTTY did filtering. My TS-450s has the stock filters for
> >> SSB:
> >> 6khz in the 8.83mhz passband an 2.4khz in 455khz IF. Obviously those
> >> filters are frustrating for RTTY.
> >>
> >> Show of hands please from users with TS-850s & TS-450s - 2 x 400hz
filters
> >> for both IF stages, or 2 x 250hz filters in both. Is my logic correct?
> >> RTTY signals are "supposed" to be 170hz wide, so a 250hz filter would
be
> >> optimal......yes/no.......(circle one hihi)
> >>
> >> Al (KE1FO) - why did you find the narrow filters frustrating? Can you
> >> comment on "MMTTY filtering"?
> >>
> >> David
> >> VE3VID
> >
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