Dear All,
I wonder if someone with more knowledge that I can advise me.
My F5K is still away with the supplier but I do have a Yaesu FT100 which
requires an external PSU. Obviously I have a PSU especially for that rig, a
SEC-1223, it has always been good to me. The PSU that I bought for the F5K was
a Watson W-30AM and as the name suggests is 30A continuous and 35A peak.
Today I used both a DVM and a oscilloscope to measure the Volts at the PSU.
Both showed a small drop when Tx'ing 100W, the SEC-1223 went from 13.89V down
to 13.78V a drop of 0.11V, the W-30AM went from 13.63V down to 13.60V a drop of
0.03V. However, I did notice a strange occurrence on the oscolloscope, with the
SEC-1223 keydown continuous, there was just a voltage drop. But with the
W-30AM, there was oscillation between the dropped voltage and the full voltage
on continuous keydown. Will this oscillation cause my problems? I see it as
TVI/RFI and am awaiting my XYL to return from work to get her assistance in
more testing.
Kind Rgds,
Gwyn - G4FKH
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