[Elecraft] K3 Roofing filters

[Paul Barlow]

Dear Elecrafters,

I've been using my K2 for a dozen years and I'm thinking I might go for a
K3. I have a question about RX filtering I'd like to get straight. Is the
widest bandwidth available to the receiver the width of the widest roofing
filter? I was wondering about getting the general coverage receive filter
board, but I wanted to know if I'd be as well to get the AM (6kHz) roofing
filter as well - or could I dial out beyond the stock 2.7 kHz?

My usual mode is CW, so I know I'd want a narrow filter to help with -
although I realise that the DSP does the filtering, the xtal filters provide
roofing.

73,

Paul EI5KI