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Re: LF: 18.5 kHz in CT

To: <[email protected]>
Subject: Re: LF: 18.5 kHz in CT
From: "Jay Rusgrove" <[email protected]>
Date: Thu, 20 Apr 2006 19:07:40 -0400
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How accurate are the WWLLN frequency scales? In particular does 18.5 fall on 18.5? Was sorry to see them go off yesterday morning ;~(   Was hoping to get a look at them during the daytime.
----- Original Message -----
Sent: Thursday, April 20, 2006 6:54 PM
Subject: Re: LF: 18.5 kHz in CT

Hi José,

no, not really a cardioid. The cardioid symbol appears in SpecLab's RDF scale because I sometimes use the directional null function to mitigate green bands from a certain switched-mode power supply. This one is much stronger on the loops than on the E-field antenna, and I can minimize it by adding in a small portion of the H-field channel in antiphase (H/E-weighting = 0.2). For far field reception, this does create a small 20% asymmetry in the directional pattern.

Re the original subject line: The test transmissions from DHO38 18.5 kHz ceased yesterday morning 07:00. However some of the WWLLN spectrograms, mostly from the pacific area, still show another FSK signal on that frequency. I couldn't find this one in the station listings, does anyone know what it is?

73 and all the best

In einer eMail vom 20.04.2006 23:05:43 Westeuropäische Sommerzeit schreibt [email protected]:

Markus , does your Grabber have a cardiod receiving pattern?
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