To All from PA0SE
Christer, SM6PXJ, wrote:
For comparison, would it be possible for you to make the same measurement
and calculation for the GBR transmitter on 16 kHz?
I happily comply.
GBR on 16kHz is received here with a field strength of 5mV/m.
I'm not sure where GBR is located but I assume it to be Rugby.
With a ruler and a 1 : 4000000 map of Europe I found the distance to be
about 380km.
These data were used to enter the graphs in CCIR Recommendation 378-7. The
curves for 15kHz are the nearest ones to 16kHz and 17.2kHz (SAQ).
Applying this curve indicates that the EIRP at GBR necessary to produce a
field strength of 5mV/m at PA0SE must be:
41kW for propagation over perfect earth
63kW for propagation over sea water
63kW for propagation over "land".
73, Dick, PA0SE
JO22GD
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