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Thanks Victor and Hartmut for listening, and
Hartmut thanks for the screenshots.
It's the first time ever I see my callsign on a
screenshot!
Equipement was about 300Watt DC input, I don't know
exact output, maybe 200Watt or so.
Antenna is 3 parallel wires each 7.5m long, 40cm
spacing
and about 7m above ground in between
buildings.
Vertical part is also 3 parallel wires, same
spacing.
Antenna current was over 1 ampere, got about 800mA
with 50Watt, but couldn't measure exact value above 1Ampere.
The core heating problem is still there, but it
seems less compaired to before.
When tuning the variometer I could see how the SWR
changed, however with lowest SWR I didn't have the highest antenna
current.
There is a little difference between these
2.
When tuning for max antennacurrent, the swr is not
at it's lowest level, but a bit up, but below 1:1,5
I couldn'r run more power, because protection
circuit of TX came in.
Had to reduce voltage to 42V in order to keep the
TX running.
I have to change the output transformer I'm
afraid.
It does work perfect into a 50Ohm dummyload, but
when connected to the antenna, things are different.
Also burnt my fingers on a little
metalswitch.......oeffffffff..there was strong RF present on TX
case.
TX was close , within 3m of antenna.......can't
advise that, hi.
Later changed that to 6m, and no more RF-on case,
hi.
73
Dick, PA4VHF
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