[Elecraft] K3 Filters: 2.7 or 2.8???

[Bill Tippett]

NY4M:
 >which filter would produce the highest transmitted audio fidelity

         Probably the 2.7 because it is actually slightly
wider than the 2.8 and has a wider shape factor:

Filter  6 dB BW 6/60 dB Shape Factor

2.7             2.91 kHz                2.9
2.8             2.89 kHz                1.6

 >It seems the 2.8 is a higher quality filter, because it is an Inrad

         They could all be Inrad.  What you care about is in the data above.

 >but wouldn't its steeper skirts tend to "pinch" the transmitted audio?

         True, but out-of-band distortion products might also be less.

 >I suspect there would be little discernable difference.

         I think that's correct.  Stick with the stock 2.7 kHz
save $90 and get a high quality microphone.

                                 73,  Bill  W4ZV