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| Subject: | Re: VLF: 5170.0025 Hz |
| From: | Markus Vester <[email protected]> |
| Date: | Thu, 19 Oct 2017 12:42:13 -0400 |
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Despite constant transmit antenna current, my signal level on Stefan's grabber dropped very significantly over the hours between midday and evening. This may be the day-night effect again: As the distance between Heidelberg and Nürnberg (178 km) is shorter than Heidelberg to Amberg (230 km), the skywave is steeper and the extra path relative to groundwave is about 20% longer. Thus a similar diurnal effect may now happen at lower frequency.
Best 73, Markus -----Ursprüngliche Mitteilung----- Von: Markus Vester <[email protected]> An: rsgb_lf_group <[email protected]> Verschickt: Do, 19. Okt 2017 14:29 Betreff: VLF: 5170.0025 Hz Since 11:46 UT I'm transmitting a carrier on 5170.0025 Hz, antenna current 0.21 A into approx. 8 m effective height. It looks like nice peaks are building up on the grabbers in Heidelberg and Amberg. |
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