On Aug 4, 2024, at 04:45, Chris via groups.io <csima@...> wrote:

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Hi,

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the choice of the bandwith has a lot to do with personal preferene.

The cfj455k14 are often in reality around 2.2k kHz wide at -6dB. This can be desired in crowded band conitions.

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I prefer a SSB bandwith of 2.7 kHz and have in the past replaced this filter with the cfj455k13 on serveral rigs and not used the optinal filter slot. I find the audio much more pleasing.

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It is important to adjust the carrier offset in the service menu to get the optimum slice of the audio spectrum as the filters are variing in their center frequency.

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The downside of a wider filter is a bit more "monkey chatter" in a crowded band.

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Besides that, this filter defines the audio banwith of the tranmitted signal.

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You may want the better audio fidelity, or prfefer to concentrate your rf power on a smaller bandwidth to be more "punchier".

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Your rig, your choice.

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73, Chris

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