[Elecraft] KFL3A-1.0K filter for voice???

[Ron D'Eau Claire]

For me, 1 KHz bandpass for voice is unreadable. If the filter is very, very
bad and the signal very strong,  enough stuff outside of the 1 kHz bandpass
might slip through to make it intelligible, but it's not as  readable as a
wider bandwidth along with the increased noise the wider bandwidth admits.
Nor are you going to hear that much slip past a 1.0 kHz filter in a
properly-working K3. 

 

Once the bandpass drops below somewhere between 2.1 and 2.7 kHz (depending
upon the voice) it takes a stronger signal to understand the voice. IMX, at
around 1.5 kHz or so all intelligibility is lost. 

 

If you have a K3, all it takes is turning down  the bandwidth below the
width of your roofing filter to hear what happens. The KFL3A-1.0K filter is
a "roofing filter" not the  filter that sets your working bandpass. The
working bandpass is set by the DSP filters, which are continuously
adjustable within the  limits of your roofing filter(s). 

 

Ron AC7AC

 

From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of JD
Sent: Friday, November 28, 2008 7:10 PM
To: Elecraft at mailman.qth.net
Subject: [Elecraft] KFL3A-1.0K filter for voice???

 

Hello,

Has anyone tried using the KFL3A-1.0K  1 kHz filter in situations of
extremely

close in stations? I realize the audio would be harsh but is it readable?

Is it a viable filter for extreme conditions?

 

Thanks,

Jeff, N0OST

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