[Elecraft] K3: just how wide is it?

[Jack Smith]

It's probably too early in the morning for Larry, N8LP, to be up, so 
I'll mention that he has measured K3 RF filter bandwidth data posted at 
http://www.telepostinc.com/K3_Stuff.html.

Jack K8ZOA



dj7mgq at muenchen-mail.de wrote:
> Hi Doug,
>
>> OK...just how wide is the bandwidth when "limited by the K3's BP 
>> filters?
>
> For what it's worth...
>
> A quick and very dirty attempt to "simulate" one of the filters using 
> Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width 
> of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I 
> assumed a Q of 1000 for the capacitors and 200 for the inductors.
>
> Maybe using Elsie or the AADE filter designer might help give you a 
> rough idea, if you can't do simulations with Spice.
>
> vy 73 de toby
>
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