[Elecraft] [K3] KFL3A-1.0K 1 kHz, 8-pole roofing filter : Purpose?

[Carl Clawson]

> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of S Sacco
> Sent: Wednesday, February 27, 2008 1:38 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] [K3] KFL3A-1.0K 1 kHz, 8-pole roofing 
> filter : Purpose?
> 
> Ever since I started looking at the K3, I've been wondering 
> about the purpose of the 1 kHz roofing filter.
> 
> It's too narrow for SSB, and, for me at least, WAY too wide for CW.
> 
> What would it be used for?  RTTY?

Well, if I'm searching and pouncing for multipliers in a contest I like to
tune down the band and hear what I'm coming up on before I get to it. 1 kHz
is about right for that. That way I can tune more quickly than if I have to
sit on a frequency long enough to see if someone's there -- someone I want
to work may be listening to someone I can't hear and I could skate right by
them if I went too fast. A wider filter makes this possible. Of course you
can use a 2.7 kHz roofing filter + DSP which is exactly what I plan to do,
being too cheap to buy the 1 kHz filter. If I were a more serious contester,
I'd get the 1 kHz filter. It could mean an extra multiplier or two now and
then.

73, Carl WS7L