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Re: LF: DCF39 ERP and field strength

To: <[email protected]>
Subject: Re: LF: DCF39 ERP and field strength
From: "Jose Manuel" <[email protected]>
Date: Sun, 14 May 2006 23:31:18 +0200
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Hello Markus:
Do you see any signal level variation in a 24 h period?
About the radiated power, I´ll take into account the correction, thanks.
73, José, EA1PX
----- Original Message -----
Sent: Sunday, May 14, 2006 10:38 PM
Subject: Re: LF: DCF39 ERP and field strength

Hi José,

though it is not explicitely mentioned in the caption beneath Geri's and Gamal's curve, I think their data actually mean a power of 40 kW EMRP (i.e. 125.6 dBµV/m at 1 km). Here at 310 km, I see 70 dBµV/m with about 6 dB groundwave absorption.

Despite this slightly higher EMRP, your measurement would still imply basically lossless low-angle skywave propagation.

73 de Markus, DF6NM

In einer eMail vom 14.05.2006 13:00:23 Westeuropäische Sommerzeit schreibt [email protected]:

Hello all
In the web of Geri, DK8KW, can be seen that DCF39 ERP is 40KW (22KW EMRP), based on measurements made by Geri some years ago. For this radiater power corresponds, at 1800 Km, in function of inverse of distance, 58 dB(uV/m); last nigth I made measurement of 60 dB(uV/m), so I wonder if still DCF39´s power is the same as before, and if the previous theorical field strength, with no reflection loss, can be exceeded some times due to the several propagation factors involved.
73 de José, EA1PX

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