[Elecraft] 700 Hz Filter Benefit

[Don Wilhelm]

Joel (and all),

I got used to tuning the CW bands with a 700 Hz width when I used my K2, 
and liked the ability to hear 'around my frequency'.  Certainly the K3 
DSP can provide that width with a 1 kHz roofing filter (or even a 2.7 
kHz), but when the bands get crowded with strong signals, and I still 
want to tune around using a 700 Hz bandwidth, I found I needed a roofing 
filter that was closer to my desired bandwidth.  So I got in on the 
first batch of these filters.  Yes, I also have a 400 Hz filter in my K3.

When you 'home in' on a signal, the 500 Hz, 400 Hz, or even the 250 Hz 
filters are an advantage, but if you are hunting for potential contacts, 
I find the 700 Hz width to be ideal. YMMV.

Even my K2 had filters set for 400 Hz and 200 Hz that I could kick in 
when necessary, but my normal filter width with the K2 was 700 Hz.  As I 
said, I liked that and bought into the 700 Hz filters when they were 
first offered.

73,
Don W3FPR

On 1/22/2014 5:06 PM, Joel Black wrote:
> I'm not bashing the filter, but I'm pretty happy with my 2.7 kHz and 
> 500 Hz filters (main and sub receiver). What would be the benefit of 
> the 700 Hz filter?
>
> BTW, if I had it to do over, I'd have gone with the 400 Hz filters as 
> that seems to be where I keep the width.
>