[Lf] Field Strength G3WSC in DL

['Geri' Kinzel, DK8KW]

Hello YLs and OMs,


I made some field strength measurements of the G3WSC operation as follows:


Call                    ERP as          Field Strenght
                        said in QSO
=============================================================   
G3WSC/p                 1 W ERP         19.1 dB microVolt/m     

G3WSC in QSO 
yesterday night         13 W ERP                24.1 dB microVolt/m

G3WSC Beacon 
Saturday morning                ?               34.1 dB microVolt/m


at a distance of 697 km



as comparison

7S6SAJ                  ?               41.6 dB microVolt/m 

at a distance of 737 km.

(to compare with other signals on my homepage: add 108.1 dB to the dBu
values shown in the table, I will update my table with dB microVolt values
soon). 


The CCIR-propagation curves for ground-wave propagation roughly indicate a
field strength of 45 dB microVolt/m for a 1 kW ERP signal at a distance of
700 km (depending on ground conductivity).

As my measurments were just taken randomly, they include some variables
such as varying propagation, day- and night difference, etc. and therefore
are not completely consistent. However, the data at least give some
indication about the radiated power. 

Keep on the work, its worth doing it! I will keep on observing and
measuring, hopefully catch your signal on 73 kHz today, I am looking
especially for my first 'normal CW' crossband QSO. What are your operarting
frequencies and schedules for 73 kHz?

Vy 73

Geri, DK8KW (W1KW)
http://www.qru.de