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Re: LF: 1476 kHz AM

from [Markus Vester] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: 1476 kHz AM
From: Markus Vester <[email protected]>
Date: Sun, 11 Nov 2018 10:43:28 +0000 (UTC)
Cc: [email protected]
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References: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Hi Marcus,

yes http://df6nm.darc.de/mf/1476kHz.jpg should have auto-updated every hour, except that unfortunately my PC stalled shortly after 4 UT.

The slow Argo is helpful. Comparing your 4:34 UT screenshot on OneDrive
https://onedrive.live.com/?authkey=%21AP9Llo5xGFVVaEM&cid=87CB17EDE8238CAA&id=87CB17EDE8238CAA%21150674&parId=87CB17EDE8238CAA%21133142&o=OneUp
to my last one
http://df6nm.darc.de/mf/1476kHz_181111_0400.jpg
we find that the swinger varied between +0.45 Hz (close to Ralph's frequency) and 0 Hz (nominal 1476 kHz). So it seems your display was around 0.5 Hz low at the end.

Unfortunately, this time Ralph's line did not appear near the upper boundary of the swinger waveform. Do you want to you try again tonight?

Best 73,
Markus (DF6NM)



-----Ursprüngliche Mitteilung-----
Von: Marcus PY3CRX PY2PLL <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: So, 11. Nov. 2018 3:05
Betreff: Re: LF: 1476 kHz AM

OK, may be the version I'm using have only 30/60/120 so I set it to 120 normal, 10 minute ticks.

Now 1:45 UTC ... the "sw inger" seems to vary across Ralph's line. The link to 1476.jpg on your site is updated from time to time? Or it is a manual sample?

At one of my screenshots there's a thin line at 22:52 UTC, the moment when I switched to 60KHz to check freq cal. Then came back to 1476. Drift .1Hz for an not-ovenized lo seems ok for now. At least I figured that I can macth any freq within +/- 1.5Hz.

May be I put another SDR-IQ using DL4YHF SpecLab ... and learn how to make it locked to PPS :D


73
Marcus
PY2PLL


Em 10/11/2018 23:06, Markus Vester escreveu:



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