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Re: LF: 0.003 Hz drift DJ8WX at 8970,022 Hz

To: [email protected]
Subject: Re: LF: 0.003 Hz drift DJ8WX at 8970,022 Hz
From: wolf_dl4yhf <[email protected]>
Date: Sat, 02 Feb 2013 20:27:29 +0100
In-reply-to: <[email protected]>
References: <[email protected]>,<7F4CF64248DB4E6184E59688EA3B5435@Extensa> <[email protected]>
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Hi Laurence and all,

You asked:

>
Is it better to have a longer FFT input size and smaller decimate or say smaller input size and larger decimate :-) ?
<

It doesn't matter for this application. Important is only the resulting FFT bin width, which is displayed on the 'FFT Settings' panel. Longer FFT and less decimation has the advantage of covering a larger bandwidth (to pan around), but since we know Uwe's frequency quite accurately that's not so important. On PCs with less than a gagabyte of RAM, or if many other programs need to run simultaneously, keep the FFT size below 512k .


73,
 Wolf DL4YHF .

(back from the club station; quite heavy QRM/QRN here so I decided to call it day on MF)


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