Re: Info on K3 "IF OUT"

Posted by John Ragle on Apr 23, 2011; 4:10pm
URL: http://elecraft.85.s1.nabble.com/Info-on-K3-IF-OUT-tp6299452p6299679.html

In part, my reason for asking is the following...

I am feeding the K3 IF Out into a fast ADC at 192 kHz, followed by a
Winloe detector, etc. for panoramic viewing, but despite the 192 kHz
sampling frequency I am only getting about 44 kHz TOTAL spectral width.
Thus, there seems to be a front-end bandwidth of about +/- ~25 kHz. Is
this true? Or am I doing something wrong?

The P3 comes up with a TOTAL spectral width of ~200 kHz. Where does it
pick its signal from?

John Ragle -- W1ZI

=====

On 4/23/2011 11:44 AM, [hidden email] wrote:

> It is a wideband, low-level signal.  The bandwidth is just limited by the
> front-end filters in the K3.  The level is about 7 dB less than the level
> at the K3 antenna input (preamp and attenuator off).  On older K3s that
> don't have the IF OUT modification the level is less than that, by about
> 8-10 dB as I recall.
>
> Alan  N1AL
>
>
>> Aside from the frequency, I can find nothing about the characteristics
>> of the K3 "IF OUT" feed. Could some kind person provide info about
>> bandwidth, levels, etc...?
>>
>> John Ragle -- W1ZI
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