PK232.7
From: WA2AAR@WA2AAR
To: ALL@ALLBBS

IN ADTION TO WB2ZTK'S NOTE ON MSG. #329 ABT THE INTERALLY UNREGULATED
SUPPLY, THIS CAUSES ADDITIONAL PROBLEMS. IF OTHER RELETIVELY HIGH POWER
EQUIPMENT IS TURNED ON OR OFF, THE RESULTANT "GLITCH" ON THE AC LINE
COULD AND HAS CAUSED THE PK-232 TO "LOSE ITS MIND" REQUIRING THAT IT BE
TURNED OFF FOR A SHORT WHILE (NO INTERNAL BATTS), TURN IT ON AND HV 
PC-PACKRATT RE-INITIALIZE EVERYTHING. (A PAIN) THIS HAPPENS WHEN I
INADVERTENTLY OPEN OR SHUT-OFF MY IC-735 PLUGGED INTO THE SAME LINE
(117VAC) AS THE PWR FOR THE PK-232. IT DOESNT ALWAYS HV THIS EFFECT,
LEADING ME TO BELIEVE THAT IT DEPENDS WHERE THE AC LINE WAVEFORM 
HAPPENS TO BE ALONE IN ITS CYCLE WHEN THE PWR SWITCH IS USED. IF THE
WAVEFORM IS NEAR ITS ZERO CROSSING OR AT A LEVEL THAT IS LIKELY TO
CAUSE THE LEAST AMOUNT OF INDUCTIVE KICKBACK FROM THE PWR. TRANSFORMER
TO PROPAGATE.

TO CAUSE PROBLEMS THE 12V REG. THAT DAN SUGGESTS WITH A 13V INPUT OR
EVEN TWO 15V ZENER DIODES BACK TO BACK WITH A 100uf ELECTOLYTIC CAP
IS WHAT I USE IN PARALLEL WITH MY SUPPLY NOW WITH GOOD RESULTS. THE
BEST PLACE TO PUT IT IS IN THE TNC'S CABINET OR AT LEAST AS NEAR AS
POSSIBLE TO IT EXTERNALLY. *** QRU FOR NOW DE N2HRJ TONY ***