The 2.8 has better symmetry and no frequency offset. Personally, I have no use
for a 2.1. If you are a CW or RTTY man get a 400 Hz.
Wes N7WS
On 8/26/2018 5:45 AM, Lee Murrah via Elecraft wrote:
I am looking to upgrade my K3S with filters and am using the DX version of the
radio as a guide. What is the advantage of the 2.8 KHz filter over the stock
2.7? What does the 2.1 KHz filter do for you?
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