So far I haven't found the line voltage lower than 125 Volts and in early
afternoon it was at 130 volts. The transmitter was working and no problem
with the finals at all before I did the recap. I did the power supply
recap in all three power supplies because the low voltage supply was
getting really hot. I'm not sure what the high voltage was before the
recap so it may not be all that much higher now.
DX100's run high on high voltage because the filter choke does not have
enough inductance for the bleeder current. It does not reach "critical
inductance" until the PA is drawing nearly full current.
Two or three hams have mentioned the neutralizing circuit for the finals.
I would have suspected that too. But - the DX-100 doesn't have a
neutralizing circuit!
That's correct. It does not have neutralization. I added it in mine, but it
isn't problematic without it if you stay off 10 and 15 meters.
A few hams have suggested that the DX-100 is just a piece of junk anyway.
It certainly wasn't the best rig, but it is generally fixable and a great
learning platform. Even with the bandwidth and other issues, it works OK
below 20 meters for old boatanchor use like AM.
73 tom
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