Hello Phil,
My answers to your questions would be:
1. Question: is the radio a completely analog radio (no DSP) if you DO NOT
buy
the DSP filter option?
Yes, completely analog. Even the KDSP2 is the audio stage.
2. Question: is the DSP filter worth the money?
Personally I don't think so, the artifact is annoying and no way comparable to
K3. IMHO, it is just a primitive DSP as at today technology.
3. Question: is the Audio filter useful? Is the Audio filter still useful if
I buy the DSP filter?
Yes, you can get KAF2 audio filter cheaply in the second hand market because
some elecrafters would like to dispose of theirs when they get the KDSP2. For a
price of about USD45 in the second hand market, you can get an audio filter +
internal clock, very value for money. Only either KDSP2 or KAF2 can be
installed but not both.
73
Johnny VR2XMC
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