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LF: Fwd: opds32 decodes of DK7FC

To: Garry and Linda Hess <[email protected]>
Subject: LF: Fwd: opds32 decodes of DK7FC
From: Stefan Schäfer <[email protected]>
Date: Sun, 03 Nov 2013 17:42:38 +0100
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Hi Garry,

Thank you for the report over such a distance in OPDS32. It makes it worth all the efforts! And it is my best distance so far in that mode. And it is interesting that you've got such nice results with a small E field probe at such a low height. You know, there are still "experts" who say that such a small antenna cannot work over a higher distance and weak signals...
I hope you don't mind that i forward the email to the LF reflector (private, not public), so that VO1NA, DF6NM and a small and slowly growing group of OPDS friends can see the results to get some motivation to continue spending effort in that nice 2200m band.

The season is just starting and i am sure there will be several more chances for detections, maybe also from other EU TX stns.

Vy 73, cuagn, Stefan/DK7FC, JN49IK


-------- Original-Nachricht --------
Betreff: opds32 decodes of DK7FC
Datum: Sun, 03 Nov 2013 10:08:17 -0600
Von: Garry Hess <[email protected]>
Antwort an: [email protected]
Organisation: none
An: DK7FC, Stefan <[email protected]>


Guten Morgen Stefan,

I've been trying to decode your 137 kHz opera transmissions with the new 
deep search code and last night was successful:

2013-11-03 01:04:18 DK7FC   7041km 137559.926Hz  22mHz -40.7dBOp  94% 18.4dB
2013-11-03 00:29:17 DK7FC   7041km 137559.924Hz   5mHz -46.5dBOp  97% 16.9dB

My clock is locked to GPS but for some reason the decode lines are 0.011 
Hz high. I've since corrected that by modifying fc in opds.ini.

Your signal peeked out of the noise around 0100Z and is clearly evident 
at the top of the attached ARGO QRSS30 capture (VO1NA is the lower 50% 
duty cycle trace). The receive antenna was an e-probe up only about 3 
meters in the back yard, running to an SDR-IQ and Windows XP PC.

Thanks for putting out such a regular potent signal!
-- 
73, Garry, K3SIW, EN52ta, Elgin, IL

Attachment: capt32_VO1NA_DK7FC_sdr-iq1_eprobe2_110313A.jpg
Description: JPEG image

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