It is interesting to remember the UK 73 kHz band experimentation which
began april 1996.
On my side my first QSO x band was 28/03/1998 with Peter G3LDO. On normal
CW, he was transmitting on 73.2 kHz and I gave to him 579 at 340 km.
I have his QSL for this rare QSO. HI.
73 de Andy. F6CNI
Hi
Markus,
Am 04.08.2013 09:46, schrieb Markus Vester:
Stefan, 10 W ERP is not that hard - anyone who
can radiate 80 W ERP on 136 will be able to do 10 W on half the frequency
;-))
Oh yes indeed. The radiation resistance of the
wire is about 1/4 and the needed L is about 4x, so the coil losses will be 4x
higher too. The ground losses may drop a bit. Then it depends on the ratio of
coil losses to ground losses. So 80W is realistic :-)
I don't know
anything about LF propagation on that band. Is it much different to 2200m? And
what are the distance records?
Yesterday night a friend showed me his new
GPS-stabilized quadrocopter. It's stunning how it could just about be parked
in midair, despite some lateral winds. Seems that would make a great antenna
carrier! Not all of the neighbour's seemed to enjoy it as much as we did...
MOST interesting! Did you ask him what the weight can
be lifted? And will it still be stable then? Is it expensive? Do you fear some
EMC problems? (The topic should be discussed in a new subject then)
73,
Stefan/DK7FC
Best 73,
Markus
(DF6NM)
