Alan G4ZFQ <alan4alan@...> wrote:
IC5 phase shift is unlikely to be wrong but may be tested by measuring
the voltage across the two outputs. If they are out of phase zero volts
will be measured.
I guess you mean "in phase"? If they're out of phase, it should measure
around 5 volts AC.
I would encourage anyone to use needle probes with their test gear, even
make them yourself. Too many faults are caused by testing..
One handy (footy?) thing I'm using is a foot switch. It connects the
supply to a separate socket (via the contactor). It's good to securely
place the probes in circuit and only then, for a brief moment, apply
voltage.
...of course in this case it wouldn't be of much help, as QDX has to be
powered and TX-ing... but in many other cases it helps.
