K2 panadapter bandwidth?

[Elecraft mailing list]

I was curious as to those running a panadapter with the K2.
How much bandwidth are you able to see?
I hooked up my FiFi SDR to the IF out and at 192 khz the band edges are faded out.
Thank you 

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[Don Wilhelm]

Harry,

What band?  That is dependent on the width of the bandpass filter which
will vary from band to band.
Are you sure it is not falloff from your soundcard - that is another
source of falloff in the stream, as well as the bandwidth of your SDR
receiver - I know nothing about the FiFi SDR, so I cannot comment on
thatm only raisse the possibility.

73,
Don W3FPR

On 4/8/2017 12:28 AM, Harry Yingst via Elecraft wrote:
> I was curious as to those running a panadapter with the K2.
> How much bandwidth are you able to see?
> I hooked up my FiFi SDR to the IF out and at 192 khz the band edges are faded out.
> Thank you
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[Alan Bloom]

I don't believe this is a limitation of the K2.  The panadapter
bandwidth is limited by the bandwidth of the sound card.

By the way, if the sound card's sample rate is 192 kHz, the panadapter
bandwidth is actually somewhat less than that, limited by the
anti-aliasing filter in the sound card, typically 170-180 kHz.  In
contrast, the P3 bandwidth is flat out to 200 kHz.

Alan N1AL


On 04/07/2017 09:28 PM, Harry Yingst via Elecraft wrote:
> I was curious as to those running a panadapter with the K2.
> How much bandwidth are you able to see?
> I hooked up my FiFi SDR to the IF out and at 192 khz the band edges are faded out.
> Thank you
>
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