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AMT1.6
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1992-09-15
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1KB
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25 lines
AMT1.6
BE CAREFUL WHEN DOING THE MOD THAT YOU DONT HEAT UP THE VERY
SENSITIVE .01 UFD CAPS. I WAS WARNED TO NOT EVEN THINK OF BRUSHING
THE IRON AGAINST THE LITTLE TYKES. THEY ARE THE CLEAR ONES THAT YOU
CAN SEE THE FOIL THROUGH THE OUTER PLASTIC.
2) AL CHANDLER SAID TO REPLACE THE 1/4 WATT 75 OHM RESISTOR AT THE
HEAD END OF THE NEGATIVE SUPPLY INVERTER. IT RUNS TOO HOT. HE
SUGGESTED USING A ONE OR TWO WATT RESISTOR OF SAME VALUE. THE HOLES
WILL NEED TO BE REDRILLED.
3) I REPLACED C1, THE 47 UFD CAP ON THE OUTPUT OF THE INVERTER,
WITH ONE OF LARGER VALUE. I DIDNT HAVE THE PROPER SIZE SO I JUST
PARALLELED A CONVENIENT VALUE ACROSS THE ORIGINAL. I USED 200 UFD
IN MINE. IT WILL REDUCE A SLIGHT RESIDUAL SWITCHING WHINE OUT OF THE
INVERTER.
4) THIS IS MY PET MOD. IT IS THE ONLY ONE EVIDENT DURING OPERATION
AND IS EXTREMELY USEFUL.
I NOTICED THAT THERE IS A LACK OF CLARITY IN THE FREQUENCY DISPLAY
WHILE TUNING AND THAT YOU NEED THE SHACK LIGHTS ON TO TELL WHETHER
YOU ARE TUNED IN THE CENTER OF THE DISPLAY. I FREQUENTLY OPERATE IN
A POORLY LIT SHACK (MY PREFERENCE) SO I THOUGHT A CHANGE WAS IN
ORDER.
CONTINUED IN FILE AMT1.4