[Kenwood] TS-450S Options

[Dennis Younker NE6I]

Hi John,

The CTSS encoder is used to transmit subaudible tones. These are sometimes 
necessary to access FM repeaters.  The encoder can be set to any of many 
standard tones. These tones are normally below the hearing range of the 
average person.

The filters are used to provide more narrow bandwidth in the receiver. 
Without looking them up, I'm not sure if all of those are compatible with 
the 450.  The Kenwoods have to I.F. stages and often have optional filters 
available for either stage.  Those below 1 kHz are for CW and above 1 kHz 
are for SSB.  If you are an active DXer or contester, filters more narrow 
than stock are often very helpful.  500 Hz is usually enough for CW although 
some folks like the 250 Hz filters. I have 250 in my TS-940S but I'm 
thinking about going to 400 or 500 Hz.  On SSB, the 1.8 kHz filter is great 
in crowded band conditions (IE contests!).

--Dennis, NE6I

----- Original Message ----- 
From: "John Parker" <parkjv1 at comcast.net>
To: <Kenwood at mailman.qth.net>
Sent: Tuesday, April 22, 2008 7:44 PM
Subject: [Kenwood] TS-450S Options


>I rally don't know that much about kenwoods so I have some more questions.
>
> Can someone shead some light on what these are used for.
>
>
> SO-2 High stability temperature compensated crystal oscillator.
> TU-8 CTCSS Encoder unit.
> YG-455C1 CW Filter 500 Hz [455 kHz IF]
> YG-455CN1 CW Filter 250 Hz [455 kHz IF]
> YK-88C1 CW Filter 500 Hz [8.83 MHz IF]
> YK-88CN1 CW Filter 270 Hz [8.83 MHz IF]
> YK-88S1 SSB Filter 2.4 kHz [8.83 MHz IF]
> YK-88SN1 SSB Filter 1.8 kHz [8.83 MHz IF]
>
> 73,
>
> John KD7KFT
>
> P.S. Money order going out tomorrow.....I talked with the owner today.  He
> will ship on Monday.  Man, this is like have your first child!!
>
>
>
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