Hi all,
its no longer a secret :
Stefan and Markus found a carrier at 8970,022Hz on Stefans
and Gerhards grabber and I had to confess that its origin is my QTH
because the TX was switched on at 1740UTC yesterday and that matches
the visibility of the carrier on Gerhards grabber.
My aerial: pse see
second last pic on the site. The 23m long wire has been
lengthened by an other 20m.
The radiasls have a overall length
of 500m.
I tried a measuring of the current
between the footpoint of the matching coils and the radials:
Sri, but the meter doesnt show more than 200mA and its far
> than that.
The TX bumps 7,5A at 284Vpp (753Wrms) into the field coil
of 134uH (Z 7,5 Ohm).
The diameter of the circuit single layer winding coils: on
average 60cm.
inductivity: 245mH.
The generator is a homebrew BPU lf-exciter with the
possibility of all usual kinds of modulations.
The class E PA makes 2,4kWrms on NF. I could get 1700Wrms
out of this (misused) disco PA on 9kHz.
When I did so the consequence was: One couldnt touch any
garden hand tools or other things longer than 50cm.
Txing with 750W: My XYL doesnt shriek any more when
working in the garden and touching p.e. the barrow.
Best regards
Uwe/dj8wx still txing a carrier on 8970,022Hz. In some
days Ill send in qrs6000.
Von: [email protected]
Gesendet: 02.03.2011 16:20
An: [email protected]
Betreff: LF: Who is transmitting on 8970.022 Hz??
VLF,
Someone is transmitting on 8970.022 Hz, visible in my "DFCW-6000"
window
and visible at OE3GHB! It is neither Markus nor Ossi nor Gerhard nor
me,
so who is it??? :-)
Frequency is very accurate over time!
On 8969.97 i am doing a local test so pse don't wonder.
73, Stefan/DK7FC
