To: | rsgb_lf_group@blacksheep.org |
---|---|
Subject: | Re: LF: New transmitter being tested on 18.5 kHz |
From: | MarkusVester@aol.com |
Date: | Mon, 17 Apr 2006 15:56:29 EDT |
Delivered-to: | daveyxm@gmail.com |
Reply-to: | rsgb_lf_group@blacksheep.org |
Sender: | owner-rsgb_lf_group@blacksheep.org |
Wolfgang, the funny thing is that the 18.5 kHz DF variations appeared during all three nights, whereas the colour of 23.4 was steady during that time, except for short periods at sunrise / sunset. Mentioning wavelength... could the effect have to do with the frequency itself? I am 476 km from Saterland, and for an assumed reflection height of 78 km, the geometrical path difference between groundwave and skywave would be about 25 km. This is two wavelengths at 24 kHz, versus 1.5 wavelengths near 18 kHz, possibly resulting in cancellation and an increased sensitivity against small perturbations. Will keep looking... 73 de Markus In einer eMail vom 17.04.2006 21:07:57 Westeuropäische Sommerzeit schreibt dl4yhf@freenet.de: Will be interesting to see if that directional VLF fading is related to |
<Prev in Thread] | Current Thread | [Next in Thread> |
---|---|---|
|
Previous by Date: | Re: LF: New transmitter being tested on 18.5 kHz, Wolf DL4YHF |
---|---|
Next by Date: | LF: T A the last night, Jean-Pierre Méré |
Previous by Thread: | Re: LF: New transmitter being tested on 18.5 kHz, Wolf DL4YHF |
Next by Thread: | LF: T A the last night, Jean-Pierre Méré |
Indexes: | [Date] [Thread] [Top] [All Lists] |