----- Original Message -----
Sent: Wednesday, June 19, 2013 8:54
PM
Subject: LF: Re: 630m Spain
Hi Federico, there
could be a number of reasons for your problems.
LF/MF does not travel as well in daylight as it
does after dark. You are looking at a 1000km + path so you need good skywave.
Operation after dark will give you about another 20dB at the receiver ar
ranges greater than 700km
You may be running Maximum allowed power but on
these bands it depends where that power is going. The radiation resistance and
the loss are in series, and the Rrad is much smaller than the loss. You need
to experiment with reducing the ground loss which is probably taking the
majority of your available power. Halving the ground loss can in some
circumstances give you four times the radiated power.
Good Luck
Alan
G3NYK
----- Original Message -----
Sent: Wednesday, June 19, 2013 6:46
PM
Subject: LF: 630m Spain
I've been three weeks calling CQ on the frequency of 472.5 kHz between 17
and 17.30 UTC
and listening to the band at different times of day without
result.
Keep
calling CQ between 17
and 17.30. I
would appreciate even if negative controls.
My signals at 20 km are strong and
clean.
A possible correspondent at 80 km, is fighting a
strong local QRM.
My signal does not
activate the RX of
Twente.
My
power is close to the maximum allowed.
Federico
EA2HB
