It's probably because the charger can only put out a smaller amount of
current than the transmitter needs during transmit. If the battery is
too low in charge and unable to supply the transmit current, it will try
to draw the required current from the charger, possibly until burnout.

Scott



Morgans wrote:
"Ron Wanttaja" wrote


FWIW, I emailed ICOM about my IC-A5, and they definitely said not to

transmit on

the charger.


My ICOM, also. Do you (or Jim) know what the reason (electronically) is,
behind this restriction?