[Elecraft] FM Filter for AM?

[Wayne Burdick]

Bob,

I could change all of the transmit filter bandwidth restrictions in  
firmware, and this is on my list. But it would be a complex change,  
and I have to weigh it against many competing firmware change  
requests. I assume the presence of a 2.7 or 2.8 kHz filter in all of  
the frequency-setting algorithms for SSB, CW, and DATA modes.  
Similarly, I assume a 6 kHz filter for TX in AM and ESSB modes.

73,
Wayne
N6KR

Bob Naumann wrote:

> Can someone explain why this restriction exists?
>
> *Why* can't you transmit through a 2.1 filter for example. *Why* is it
> precluded?