Ted,
I have the 700Hz/5-pole, the 400 Hz/8-pole, and the 200 Hz/5-pole.
The only real concern in selecting a preferred pitch is that the K3 will set the center of your CW filter so that Fc-[BW/2] is no lower than 200 Hz. If you select a center frequency less than 550 Hz, your 700Hz filter will be offset to the high side. For example, if you select 450 Hz the 700 Hz filter will cover 200-900 Hz not 100 to 800 Hz. That's not a big issue with wider filters but just something to be aware of when selecting filters and nominal sidetone frequencies. I tend to prefer 490 (it's close to B4 [493 = B4]) which works with any of the normal Elecraft CW filters (500, 400, 250 or 200). 73, ... Joe, W4TV On 2015-02-28 2:29 PM, Ted Edwards W3TB wrote:
I like to use the CWT function when operating CW and then the Spot button to zero-beat. I have been using 700 Hz as the pitch but would like to hear a lower frequency audio tone for my own preference. What is the mind of the Reflector on a best tone frequency and related to whether it has any impact on the roofing filter selections? I have the 700Hz/5-pole, the 400 Hz/8-pole, and the 200 Hz/5-pole. And thank you all ahead of time for your answers.
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