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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: SAQ |
| From: | DK7FC <[email protected]> |
| Date: | Thu, 25 Oct 2018 09:21:11 +0200 |
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Hi Domenico, Which filter settings did you choose to obtain the CW filter?I also used vlfrx-tools to extract the SAQ message. The SNR was much stronger on the N-S loop than from the E field. Mixing E and H (including a small portion of the E-W loop) resulted in an SNR increase of > 6 dB. But in the end i used SpecLab to build the CW filter, a rough noise blanker for the very loud sferics (12 dB threshold) and finally a slow AGC which made it even more comfortable to listen to... 73, Stefan Am 24.10.2018 23:35, schrieb Domenico IZ7SLZ: Good reception of SAQ here in JN80nu thanks to very low QRN and to Paul's vlfrx-tools used for acquiring, filtering and stream the audio to Windows PC. Then i have used Spectrum Lab to convert to analog and send the audio to the speaker. Path is about 2300 km.This is the audio recordered: https://drive.google.com/file/d/1QzJYH8GajL2PzCngnkteNT3p5vBN-tAY/view?usp=sharingIn perfect 'vintage' marine radio officer style, i have prepared the text sent by SAQ :https://drive.google.com/file/d/1R36BPmf5lyiAlOzDj-bj1dZuNkKleQt3/view?usp=sharing a nice text about the Peace. Thanks to the SAQ staff for their activities. 73, Domenico IZ7SLZ |
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