I find the 2.1 KHz filter useful for SSB contesting when the band is crowded. At other times it also seems to reduce band noise when it is engaged. (The other filter that will be engaged in my radio is a 5 pole 2.7 KHz filter.)

If you set a low cutoff of 350 Hz then the 2.1 KHz filter will pass audio up to 2.45 KHz, which makes SSB voice quite intelligible.

73 Bill AE6JV

On 8/26/18 at 5:45 AM, [email protected] (Lee Murrah via Elecraft) wrote:

What does the 2.1 KHz filter do for you?

-------------------------------------------------------------------------
Bill Frantz        | Re: Hardware Management Modes: | Periwinkle
(408)356-8506 | If there's a mode, there's a | 16345 Englewood Ave www.pwpconsult.com | failure mode. - Jerry Leichter | Los Gatos, CA 95032

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